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Iowa State University
1.
Li, Haixing.
Experimental studies on the dynamics of in-flight and impacting water droplets pertinent to aircraft icing phenomena.
Degree: 2017, Iowa State University
URL: https://lib.dr.iastate.edu/etd/15564
► Aircraft icing is widely recognized as a significant hazard to aircraft operations in cold weather. When an aircraft or rotorcraft fly in a cold climate,…
(more)
▼ Aircraft icing is widely recognized as a significant hazard to aircraft operations in cold weather. When an aircraft or rotorcraft fly in a cold climate, some of the super-cooled water droplets would impact and freeze on the exposed aircraft surfaces to form ice shapes, which can degrade the aerodynamic performance of an airplane significantly by decreasing lift while increasing drag, and even lead to the aircraft crash. In the present study, a series of experimental investigations were conducted to investigate dynamics and thermodynamics of in-flight and impinging water droplets in order to elucidate the underlying physics of the important microphysical process pertinent to aircraft icing phenomena.
A novel lifetime-based molecular tagging thermometry technique (MTT) is developed to achieve simultaneous measurements of droplet size, flying velocity and transient temperature of in-flight water droplets to characterize the dynamic and thermodynamic behaviors of the micro-sized in-flight droplets pertinent to aircraft icing phenomena. By using high-speed imaging and infrared thermal imaging techniques, a comprehensive experimental study was conducted to quantify the unsteady heat transfer and phase changing processes as water droplets impinging onto frozen cold surfaces under different test conditions (i.e., with different Weber numbers, Reynolds numbers, and impact angles of the impinging droplets, different temperature, hydrophobicity and roughness of the test plates) to simulate the scenario of super-cooled water droplets impinging onto the frozen cold wing surfaces. A novel digital image projector (DIP) technique was also developed to achieve time-resolved film thickness measurements to quantify the dynamic impinging process of water droplets (i.e., droplet impact, rebounding, splashing and freezing process). An impact droplet maximum spreading diameter model and a damped harmonic oscillator model was proposed based on precise measurement of the impact droplet 3D shape. A better understanding of the important micro physical processes pertinent to aircraft icing phenomena would lead to better ice accretion models for more accurate prediction of ice formation and accretion on aircraft wings as well as develop more effective and robust anti-/de-icing strategies for safer and more efficient operation of aircraft in cold weather.
Subjects/Keywords: 3-D shape reconstruction of impact droplet; Aircraft icing; Droplet impact dynamics; Droplet impact on super-hydrophobic surface; In-flight droplets temperature measurement; Aerospace Engineering
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APA ·
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Vancouver ·
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APA (6th Edition):
Li, H. (2017). Experimental studies on the dynamics of in-flight and impacting water droplets pertinent to aircraft icing phenomena. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/etd/15564
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Li, Haixing. “Experimental studies on the dynamics of in-flight and impacting water droplets pertinent to aircraft icing phenomena.” 2017. Thesis, Iowa State University. Accessed March 07, 2021.
https://lib.dr.iastate.edu/etd/15564.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Li, Haixing. “Experimental studies on the dynamics of in-flight and impacting water droplets pertinent to aircraft icing phenomena.” 2017. Web. 07 Mar 2021.
Vancouver:
Li H. Experimental studies on the dynamics of in-flight and impacting water droplets pertinent to aircraft icing phenomena. [Internet] [Thesis]. Iowa State University; 2017. [cited 2021 Mar 07].
Available from: https://lib.dr.iastate.edu/etd/15564.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Li H. Experimental studies on the dynamics of in-flight and impacting water droplets pertinent to aircraft icing phenomena. [Thesis]. Iowa State University; 2017. Available from: https://lib.dr.iastate.edu/etd/15564
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
2.
Ulusoy, Ali Osman.
Probabilistic and Volumetric Reconstruction of Time-Varying
3-d Scenes from Multi-View Images.
Degree: PhD, Electrical Sciences and Computer
Engineering, 2014, Brown University
URL: https://repository.library.brown.edu/studio/item/bdr:386245/
► This thesis is concerned with estimating the time-varying 3-d surface geometry and surface appearance of dynamic scenes from images. An accurate reconstruction of a 4-d…
(more)
▼ This thesis is concerned with estimating the
time-varying
3-
d surface geometry and surface appearance of dynamic
scenes from images. An accurate
reconstruction of a 4-
d
(space+time) representation of the scene yields an encoding of the
4-
d events in the scene and facilitates inference tasks such as
detecting and recognizing objects, and tracking their movements.
Reconstructing the full 4-
d world from images is a very difficult
problem because much information is lost in the perspective
projection from
3-
d to 2-
d image space. Most existing works require
prior
shape and motion models for objects in the scene. This thesis
presents a framework capable of reconstructing accurate 4-
d models
of general scenes without knowledge of the shapes in the scene or
their motion. The thesis introduces a volumetric 4-
d representation
that is able to encode complex
3-
d shapes that deform in arbitrary
ways. The representation encodes probabilistic estimates of
3-
d
surface geometry and appearance, which describes the ambiguities of
reconstruction. A novel 4-
d data structure is defined that adapts
the resolution of 4-
d cells according to the spatio-temporal
variations in the scene. Experiments demonstrate that this adaptive
scheme requires less storage compared to the common approach of
storing separate
3-
d models for each time step. The thesis also
presents two
reconstruction algorithms to estimate this 4-
d
representation from images. The first algorithm is suitable for
synchronized multi-view video streams captured in indoor studios
and achieves high quality 4-
d models from standard datasets. A
novel appearance model for non-Lambertian surfaces enables accurate
reconstruction of reflective materials in these datasets, which has
not been previously demonstrated. The second
reconstruction
algorithm is suitable for realistic outdoor environments that are
imaged periodically and change slowly over time. The algorithm
proceeds by detecting and reconstructing changes in the scene to
continuously update an evolving
3-
d model. Experiments show that
the algorithm requires less imagery and computation time, and leads
to higher quality 4-
d models, compared to full scene
reconstruction
at each time step.
Advisors/Committee Members: Mundy, Joseph (Director), Mundy, Joseph (Reader), Taubin, Gabriel (Reader), Hays, James (Reader).
Subjects/Keywords: 3-d reconstruction
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ulusoy, A. O. (2014). Probabilistic and Volumetric Reconstruction of Time-Varying
3-d Scenes from Multi-View Images. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:386245/
Chicago Manual of Style (16th Edition):
Ulusoy, Ali Osman. “Probabilistic and Volumetric Reconstruction of Time-Varying
3-d Scenes from Multi-View Images.” 2014. Doctoral Dissertation, Brown University. Accessed March 07, 2021.
https://repository.library.brown.edu/studio/item/bdr:386245/.
MLA Handbook (7th Edition):
Ulusoy, Ali Osman. “Probabilistic and Volumetric Reconstruction of Time-Varying
3-d Scenes from Multi-View Images.” 2014. Web. 07 Mar 2021.
Vancouver:
Ulusoy AO. Probabilistic and Volumetric Reconstruction of Time-Varying
3-d Scenes from Multi-View Images. [Internet] [Doctoral dissertation]. Brown University; 2014. [cited 2021 Mar 07].
Available from: https://repository.library.brown.edu/studio/item/bdr:386245/.
Council of Science Editors:
Ulusoy AO. Probabilistic and Volumetric Reconstruction of Time-Varying
3-d Scenes from Multi-View Images. [Doctoral Dissertation]. Brown University; 2014. Available from: https://repository.library.brown.edu/studio/item/bdr:386245/
3.
Farnandes, Mathieu.
Reconstruction 3-D de surfaces à partir de séquences d'images 2-D acquises par sectionnement optique - Application à l'endothélium cornéen humain ex-vivo observé en microscopie optique conventionnelle : 3-D reconstruction of surfaces from sequences of 2-D images acquired by optical sectioning - Application to the human ex-vivo corneal endothelium observed by conventional optical microscopy.
Degree: Docteur es, Image vision signal, 2011, Saint-Etienne, EMSE
URL: http://www.theses.fr/2011EMSE0597
► Dans le circuit de la greffe de cornée, l'endothélium de chaque greffon est observé en microscopie optique conventionnelle afin de vérifier que sa densité cellulaire…
(more)
▼ Dans le circuit de la greffe de cornée, l'endothélium de chaque greffon est observé en microscopie optique conventionnelle afin de vérifier que sa densité cellulaire est suffisante pour maintenir une bonne transparence après l'opération. Les greffons étant conservés dans un milieu spécifique, ils sont imprégnés de liquide et présentent donc des plis qui perturbent l'observation et le comptage des cellules. Ce problème pratique est à l'origine d’une étude théorique sur les concepts de profondeur de champ étendue et de shape-from-focus. A partir d'une séquence d'images acquise par sectionnement optique, les informations les plus nettes permettent d'une part d'accéder à la topographie de la surface observée et d'autre part de restaurer l'image de sa texture. Une reconstruction surfacique 3-D est alors obtenue en projetant la texture sur la topographie. Cette thèse considère essentiellement l’étape fondamentale de mesure de netteté du processus de reconstruction. Des nouvelles mesures génériques offrant une haute sensibilité à la netteté sont introduites. De par une stratégie 3-D originale au travers de la séquence d'images, une autre mesure très robuste au bruit est proposée. Toutes ces mesures sont testées sur des données simulées puis diverses acquisitions réelles en microscopie optique conventionnelle et comparées aux méthodes de la littérature. Par ailleurs, la mesure 3-D améliore nettement les reconstructions d'endothéliums cornéens à partir de leurs acquisitions particulièrement perturbées (inversions de contraste). Un processus itératif complet de reconstruction 3-D d’endothéliums cornéens est finalement décrit, aboutissant à des résultats solides et exploitables.
In the cornea transplant process, each graft endothelium is observed by conventional optical microscopy to check that its cell density is sufficient to maintain a proper transparency after the transplantation. The grafts are stored in a specific preservation medium, they are thus impregnated with fluid and therefore exhibit folds which make cell observation and counting difficult. This practical issue led to the following theoretical study about the so-called concepts: extended-depth-of-field and shape-from-focus. Throughout a sequence of images acquired by optical sectioning, the in-focus information allows on the one hand to recover the topography of the observed surface and on the other hand to restore the image of its texture. A 3-D reconstruction is then obtained by mapping the texture onto the topography. This thesis basically considers the fundamental step of the reconstruction process that is the focus measurement. New generic focus measurements exhibiting high sharpness sensitivity are introduced. Another one offering high noise robustness is proposed, due to an original 3-D strategy through the image sequence, unlike traditional methods that operate in 2-D. All of them are tested on simulated data and various real acquisitions, and compared to the state-of-the-art methods. Furthermore, the aforementioned 3-D focus measurement clearly…
Advisors/Committee Members: Pinoli, Jean-Charles (thesis director).
Subjects/Keywords: Analyse de netteté; Autofocalisation; Endothélium cornéen humain; Inversions de contraste; Mesure de netteté; Microscopie optique; Mosaïque cellulaire; Profondeur de champ étendue; Reconstruction 3-D; Robustesse; Sectionnement optique; Shape-from-focus; 3-D reconstruction; Autofocusing; Cell Mosaic; Contrast reversals; Extended-depth-of-field; Focus analysis; Focus measurement; Human corneal endothelium; Optical microscopy; Optical sectioning; Robustness; Shape-from-focus
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Farnandes, M. (2011). Reconstruction 3-D de surfaces à partir de séquences d'images 2-D acquises par sectionnement optique - Application à l'endothélium cornéen humain ex-vivo observé en microscopie optique conventionnelle : 3-D reconstruction of surfaces from sequences of 2-D images acquired by optical sectioning - Application to the human ex-vivo corneal endothelium observed by conventional optical microscopy. (Doctoral Dissertation). Saint-Etienne, EMSE. Retrieved from http://www.theses.fr/2011EMSE0597
Chicago Manual of Style (16th Edition):
Farnandes, Mathieu. “Reconstruction 3-D de surfaces à partir de séquences d'images 2-D acquises par sectionnement optique - Application à l'endothélium cornéen humain ex-vivo observé en microscopie optique conventionnelle : 3-D reconstruction of surfaces from sequences of 2-D images acquired by optical sectioning - Application to the human ex-vivo corneal endothelium observed by conventional optical microscopy.” 2011. Doctoral Dissertation, Saint-Etienne, EMSE. Accessed March 07, 2021.
http://www.theses.fr/2011EMSE0597.
MLA Handbook (7th Edition):
Farnandes, Mathieu. “Reconstruction 3-D de surfaces à partir de séquences d'images 2-D acquises par sectionnement optique - Application à l'endothélium cornéen humain ex-vivo observé en microscopie optique conventionnelle : 3-D reconstruction of surfaces from sequences of 2-D images acquired by optical sectioning - Application to the human ex-vivo corneal endothelium observed by conventional optical microscopy.” 2011. Web. 07 Mar 2021.
Vancouver:
Farnandes M. Reconstruction 3-D de surfaces à partir de séquences d'images 2-D acquises par sectionnement optique - Application à l'endothélium cornéen humain ex-vivo observé en microscopie optique conventionnelle : 3-D reconstruction of surfaces from sequences of 2-D images acquired by optical sectioning - Application to the human ex-vivo corneal endothelium observed by conventional optical microscopy. [Internet] [Doctoral dissertation]. Saint-Etienne, EMSE; 2011. [cited 2021 Mar 07].
Available from: http://www.theses.fr/2011EMSE0597.
Council of Science Editors:
Farnandes M. Reconstruction 3-D de surfaces à partir de séquences d'images 2-D acquises par sectionnement optique - Application à l'endothélium cornéen humain ex-vivo observé en microscopie optique conventionnelle : 3-D reconstruction of surfaces from sequences of 2-D images acquired by optical sectioning - Application to the human ex-vivo corneal endothelium observed by conventional optical microscopy. [Doctoral Dissertation]. Saint-Etienne, EMSE; 2011. Available from: http://www.theses.fr/2011EMSE0597

University of Miami
4.
Aykin, Murat Deniz.
Forward-Scan 2-D Sonar Image Formation and 3-D Reconstruction.
Degree: PhD, Electrical and Computer Engineering (Engineering), 2015, University of Miami
URL: https://scholarlyrepository.miami.edu/oa_dissertations/1481
► Interpretation of acoustical images to understand the characteristics of a scene and identify under-water objects has become a problem of high importance in a…
(more)
▼ Interpretation of acoustical images to understand the characteristics of a scene and identify under-water objects has become a problem of high importance in a variety of applications. In the meantime, the computer processing of forward-scan sonar video imagery has enabled significant capabilities in a wide variety of underwater operations within turbid environments. Further developments are inevitable with more accurate representation of the image formation principles of these sonars. Sonar images are formed by transmitting acoustical pulses and measuring the reflected sound power from the scene surfaces. The recorded signal encodes information about the
shape and material properties of these surfaces. The inherent ambiguities in the interpretation of the
3-
D world based on visual cues in a 2-
D forward-scan sonar image arise as a result of both operating as a ranging device and loss of elevation angle information due to the projection geometry. One aspect of this work is modeling the image formed by a new class of high-resolution 2-
D forward-scan sonar systems which supports our complementary aim of simulating FL sonar images. The other aspect is reconstructing
3-
D objects by either recovering the unknown zenith angles from image brightness of a single sonar view or by applying a carving based technique on multiple sonar views. To elaborate, we first provide a detailed derivation for modeling the image formed by a forward-scan sonar. Our initial model derived for a small surface patch is generalized to handle multiple patches and account for the signal type and pulse-width. We exemplify and simulate our model for a circular target profile and validate it by comparing with the true intensities measured from two isolated cylindrical targets with circular cut sections. Then we demonstrate application of our model for multi-path reflections from bottom surfaces with hemi-cylindrical and hemi-spherical targets laid on the bottom. Next, we propose a method to recover the unknown zenith angles from image brightness and thus reconstruct
3-
D objects. Our method applies to a single forward-scan sonar image, assuming that the scene objects have smooth surfaces that vary monotonically in terms of distance from the sonar, and cast visible shadows on a flat background. We present the results of experiments with real data to demonstrate the performance of our
3-
D reconstruction technique. Finally, we develop a method for determining the
3-
D shape of a target from multiple 2-
D forward-scan sonar images at given sonar poses. Our strategy is based on sequentially carving the non-target space projecting onto the so-called dark pixels on various images. We demonstrate how the remaining space, deemed to be occupied by the target, approaches toward the object volume, given enough views. The images acquired through sonar roll motions, rather than circumnavigating the target, are critical for more precise
reconstruction. Employing our image simulator, we perform extensive tests to assess the convergence properties of our
3-
D approach for…
Advisors/Committee Members: Shahriar Negahdaripour, Mohamed Abdel-Mottaleb, Kamal Premaratne, Michael G. Brown, Pierre-Philippe Beaujean.
Subjects/Keywords: shape from shading; space carving; 3-D target reconstruction; forward-scan sonar; acoustical image; Lambert's model
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Aykin, M. D. (2015). Forward-Scan 2-D Sonar Image Formation and 3-D Reconstruction. (Doctoral Dissertation). University of Miami. Retrieved from https://scholarlyrepository.miami.edu/oa_dissertations/1481
Chicago Manual of Style (16th Edition):
Aykin, Murat Deniz. “Forward-Scan 2-D Sonar Image Formation and 3-D Reconstruction.” 2015. Doctoral Dissertation, University of Miami. Accessed March 07, 2021.
https://scholarlyrepository.miami.edu/oa_dissertations/1481.
MLA Handbook (7th Edition):
Aykin, Murat Deniz. “Forward-Scan 2-D Sonar Image Formation and 3-D Reconstruction.” 2015. Web. 07 Mar 2021.
Vancouver:
Aykin MD. Forward-Scan 2-D Sonar Image Formation and 3-D Reconstruction. [Internet] [Doctoral dissertation]. University of Miami; 2015. [cited 2021 Mar 07].
Available from: https://scholarlyrepository.miami.edu/oa_dissertations/1481.
Council of Science Editors:
Aykin MD. Forward-Scan 2-D Sonar Image Formation and 3-D Reconstruction. [Doctoral Dissertation]. University of Miami; 2015. Available from: https://scholarlyrepository.miami.edu/oa_dissertations/1481

Georgia Tech
5.
Shih, Ping-Chang.
Joint variational camera calibration refinement and 4-D stereo reconstruction applied to oceanic sea states.
Degree: PhD, Electrical and Computer Engineering, 2014, Georgia Tech
URL: http://hdl.handle.net/1853/52320
► In this thesis, an innovative algorithm for improving the accuracy of variational space-time stereoscopic reconstruction of ocean surfaces is presented. The space-time reconstruction method, developed…
(more)
▼ In this thesis, an innovative algorithm for improving the accuracy of variational space-time stereoscopic
reconstruction of ocean surfaces is presented. The space-time
reconstruction method, developed based on stereo computer vision principles and variational optimization theory, takes videos captured by synchronized cameras as inputs and produces the
shape and superficial pattern of an overlapped region of interest as outputs. These outputs are designed to be the minimizers of the variational optimization framework and are dependent on the estimation of the camera parameters. Therefore, from the perspective of computer vision, the proposed algorithm adjusts the estimation of camera parameters to lower the disagreement between the
reconstruction and 2-
D camera recordings. From a mathematical perspective, since the minimizers of the variational framework are determined by a set of partial differential equations (PDEs), the algorithm modifies the coefficients of the PDEs based on the current numerical
solutions to reduce the minimum of the optimization framework. Our algorithm increases the tolerance to the errors of camera parameters, so the joint operations of our algorithm and the variational
reconstruction method can generate accurate space-time models even using videos captured by perturbed cameras as input. This breakthrough prompts the realization of ocean surface
reconstruction using videos filmed by remotely-controlled helicopters in the future. A number of techniques, technical or theoretical, are explored to fulfill the development and implementation of the algorithm and relative computation issues. The effectiveness of the proposed algorithm is validated through the statistics applied to real ocean surface reconstructions of data collected from an offshore platform at the Crimean Peninsula, the Black Sea. Moreover, synthetic data generated using computer graphics are customized to simulate various situations that are not recorded in the Crimea dataset for the demonstration of the algorithm.
Advisors/Committee Members: Yezzi, Anthony (advisor), Fedele, Francesco (committee member), Vela, Patricio (committee member), Romberg, Justin (committee member), Dellaert, Frank (committee member), Tannenbaum, Allen (committee member).
Subjects/Keywords: Stereo computer vision; Camera calibration; 3-D reconstruction; Variational
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Shih, P. (2014). Joint variational camera calibration refinement and 4-D stereo reconstruction applied to oceanic sea states. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/52320
Chicago Manual of Style (16th Edition):
Shih, Ping-Chang. “Joint variational camera calibration refinement and 4-D stereo reconstruction applied to oceanic sea states.” 2014. Doctoral Dissertation, Georgia Tech. Accessed March 07, 2021.
http://hdl.handle.net/1853/52320.
MLA Handbook (7th Edition):
Shih, Ping-Chang. “Joint variational camera calibration refinement and 4-D stereo reconstruction applied to oceanic sea states.” 2014. Web. 07 Mar 2021.
Vancouver:
Shih P. Joint variational camera calibration refinement and 4-D stereo reconstruction applied to oceanic sea states. [Internet] [Doctoral dissertation]. Georgia Tech; 2014. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1853/52320.
Council of Science Editors:
Shih P. Joint variational camera calibration refinement and 4-D stereo reconstruction applied to oceanic sea states. [Doctoral Dissertation]. Georgia Tech; 2014. Available from: http://hdl.handle.net/1853/52320

University of KwaZulu-Natal
6.
Jermy, Robert Sydney.
Parallel patch-based volumetric reconstruction from images.
Degree: Computer engineering, 2014, University of KwaZulu-Natal
URL: http://hdl.handle.net/10413/12575
► Three Dimensional (3D) reconstruction relates to the creating of 3D computer models from sets of Two Dimensional (2D) images. 3D reconstruction algorithms tend to have…
(more)
▼ Three Dimensional (3D)
reconstruction relates to the creating of 3D computer models from
sets of Two Dimensional (2D) images. 3D
reconstruction algorithms tend to have long execution
times, meaning they are ill suited to real time 3D
reconstruction tasks. This is a
significant limitation which this dissertation attempts to address. Modern Graphics Processing
Units (GPUs) have become fully programmable and have spawned the field known
as General Purpose GPU (GPGPU) processing. Using this technology it is possible to of-
fload certain types of tasks from the Central Processing Unit (CPU) to the GPU. GPGPU
processing is designed for problems that have data parallelism. This means that a particular
task can be split into many smaller tasks that can run in parallel, the results of which
and are not dependent upon the order in which the tasks are completed. Therefore to
properly make use of both CPU parallelism and GPGPU processing a 3D
reconstruction
algorithm with data parallelism was required. The selected algorithm was the Patch-Based
Multi-View Stereopsis (PMVS) method, proposed and implemented by Yasutaka Furukawa
and Jean Ponce. This algorithm uses small oriented rectangular patches to model a surface
and is broken into four major steps: Feature detection; feature matching, expansion and
filtering. The reconstructed patches are independent and as such the algorithm is data parallel.
Some segments of the PMVS algorithm were programmed for GPGPU and others for
CPU parallelism. Results show that the feature detection stage runs 10 times faster on the
GPU than the equivalent CPU implementation. The patch creation and expansion stages
also benefited from GPU implementation. Which brought an improvement in the execution
time of two times for large images, and equivalent execution times for small images, when
compared to the CPU implementation. These results show that the use of GPGPU and
CPU parallelism can indeed improve the performance of this 3D
reconstruction algorithm.
Advisors/Committee Members: Naidoo, Bashan. (advisor), Tapamo, Jules-Raymond. (advisor).
Subjects/Keywords: Computer engineering.; 3-D reconstruction algorithm.; Central processing unit.
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Jermy, R. S. (2014). Parallel patch-based volumetric reconstruction from images. (Thesis). University of KwaZulu-Natal. Retrieved from http://hdl.handle.net/10413/12575
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Jermy, Robert Sydney. “Parallel patch-based volumetric reconstruction from images.” 2014. Thesis, University of KwaZulu-Natal. Accessed March 07, 2021.
http://hdl.handle.net/10413/12575.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Jermy, Robert Sydney. “Parallel patch-based volumetric reconstruction from images.” 2014. Web. 07 Mar 2021.
Vancouver:
Jermy RS. Parallel patch-based volumetric reconstruction from images. [Internet] [Thesis]. University of KwaZulu-Natal; 2014. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/10413/12575.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Jermy RS. Parallel patch-based volumetric reconstruction from images. [Thesis]. University of KwaZulu-Natal; 2014. Available from: http://hdl.handle.net/10413/12575
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

York University
7.
Banitabaei, Sayed Abdolhossein.
Droplet Impact onto a Spherical Particle in Mid-Air.
Degree: PhD, Mechanical Engineering, 2019, York University
URL: https://yorkspace.library.yorku.ca/xmlui/handle/10315/36805
► Collision between a droplet and a particle has a wide range of applications in chemical and petrochemical industries, polyethylene synthesis, and particle coating. Various studies…
(more)
▼ Collision between a
droplet and a particle has a wide range of applications in chemical and petrochemical industries, polyethylene synthesis, and particle coating. Various studies in the literature indicate that the collision products are very different depending on the size and velocity of the particle and
droplet, particle wettability and roughness, and physical properties of the liquid and the surrounding gas. The collision outcome is a liquid film (i.e. lamella) and the objective of this thesis is to identify various
impact products in different conditions and to study how each category of the above mentioned parameters or a combination of them affect the lamella formation. Investigation of the
droplet impact was divided into two parts: drop
impact onto a still particle, and
droplet impact onto a moving particle in mid-air. Contribution of this thesis to the field can be summarized as following. First, studying the
impact phenomenon in a wider range of both Weber number (0.1<We<1146) and
droplet-to-particle diameter ratio (1.4<Dr<5.0) compared to what already exists in the literature. Both experimental and numerical tools were developed and used to study the head-on
impact between a
droplet and a particle. Second, studying the effect of
impact velocity, particle wettability, and the amount that each of these parameter contributes on collision outcomes. The required conditions for a lamella to be formed was also studied, and how the lamella geometry changes in case the
impact velocity is changed, or hydrophilic/hydrophobic types of particles are used. Third, investigation of the effect of liquid viscosity on lamella formation; what the dynamics of the liquid is inside the film, and how the fluid field inside the lamella is affected by the viscosity changes. Fourth, identifying the role of ambient gas in lamella formation and how each of the drag and lift forces contribute in creating the liquid film. Fifth, developing a pneumatic
droplet generator capable of producing single drops with various
droplet sizes. The breakup phenomenon in the nozzle and
droplet velocity upon pinch-off were also investigated in detail.
Advisors/Committee Members: Amirfazli, Alidad (advisor).
Subjects/Keywords: Mechanical engineering; Droplet impact; Droplet impact onto a particle; Droplet impingement; Droplet impact onto curved surfaces; Droplet and particle collision
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Banitabaei, S. A. (2019). Droplet Impact onto a Spherical Particle in Mid-Air. (Doctoral Dissertation). York University. Retrieved from https://yorkspace.library.yorku.ca/xmlui/handle/10315/36805
Chicago Manual of Style (16th Edition):
Banitabaei, Sayed Abdolhossein. “Droplet Impact onto a Spherical Particle in Mid-Air.” 2019. Doctoral Dissertation, York University. Accessed March 07, 2021.
https://yorkspace.library.yorku.ca/xmlui/handle/10315/36805.
MLA Handbook (7th Edition):
Banitabaei, Sayed Abdolhossein. “Droplet Impact onto a Spherical Particle in Mid-Air.” 2019. Web. 07 Mar 2021.
Vancouver:
Banitabaei SA. Droplet Impact onto a Spherical Particle in Mid-Air. [Internet] [Doctoral dissertation]. York University; 2019. [cited 2021 Mar 07].
Available from: https://yorkspace.library.yorku.ca/xmlui/handle/10315/36805.
Council of Science Editors:
Banitabaei SA. Droplet Impact onto a Spherical Particle in Mid-Air. [Doctoral Dissertation]. York University; 2019. Available from: https://yorkspace.library.yorku.ca/xmlui/handle/10315/36805

York University
8.
Banitabaei, Sayed Abdolhossein.
Droplet Impact onto a Spherical Particle in Mid-Air.
Degree: PhD, Mechanical Engineering, 2019, York University
URL: http://hdl.handle.net/10315/36805
► Collision between a droplet and a particle has a wide range of applications in chemical and petrochemical industries, polyethylene synthesis, and particle coating. Various studies…
(more)
▼ Collision between a
droplet and a particle has a wide range of applications in chemical and petrochemical industries, polyethylene synthesis, and particle coating. Various studies in the literature indicate that the collision products are very different depending on the size and velocity of the particle and
droplet, particle wettability and roughness, and physical properties of the liquid and the surrounding gas. The collision outcome is a liquid film (i.e. lamella) and the objective of this thesis is to identify various
impact products in different conditions and to study how each category of the above mentioned parameters or a combination of them affect the lamella formation. Investigation of the
droplet impact was divided into two parts: drop
impact onto a still particle, and
droplet impact onto a moving particle in mid-air. Contribution of this thesis to the field can be summarized as following. First, studying the
impact phenomenon in a wider range of both Weber number (0.1<We<1146) and
droplet-to-particle diameter ratio (1.4<Dr<5.0) compared to what already exists in the literature. Both experimental and numerical tools were developed and used to study the head-on
impact between a
droplet and a particle. Second, studying the effect of
impact velocity, particle wettability, and the amount that each of these parameter contributes on collision outcomes. The required conditions for a lamella to be formed was also studied, and how the lamella geometry changes in case the
impact velocity is changed, or hydrophilic/hydrophobic types of particles are used. Third, investigation of the effect of liquid viscosity on lamella formation; what the dynamics of the liquid is inside the film, and how the fluid field inside the lamella is affected by the viscosity changes. Fourth, identifying the role of ambient gas in lamella formation and how each of the drag and lift forces contribute in creating the liquid film. Fifth, developing a pneumatic
droplet generator capable of producing single drops with various
droplet sizes. The breakup phenomenon in the nozzle and
droplet velocity upon pinch-off were also investigated in detail.
Advisors/Committee Members: Amirfazli, Alidad (advisor).
Subjects/Keywords: Mechanical engineering; Droplet impact; Droplet impact onto a particle; Droplet impingement; Droplet impact onto curved surfaces; Droplet and particle collision
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Banitabaei, S. A. (2019). Droplet Impact onto a Spherical Particle in Mid-Air. (Doctoral Dissertation). York University. Retrieved from http://hdl.handle.net/10315/36805
Chicago Manual of Style (16th Edition):
Banitabaei, Sayed Abdolhossein. “Droplet Impact onto a Spherical Particle in Mid-Air.” 2019. Doctoral Dissertation, York University. Accessed March 07, 2021.
http://hdl.handle.net/10315/36805.
MLA Handbook (7th Edition):
Banitabaei, Sayed Abdolhossein. “Droplet Impact onto a Spherical Particle in Mid-Air.” 2019. Web. 07 Mar 2021.
Vancouver:
Banitabaei SA. Droplet Impact onto a Spherical Particle in Mid-Air. [Internet] [Doctoral dissertation]. York University; 2019. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/10315/36805.
Council of Science Editors:
Banitabaei SA. Droplet Impact onto a Spherical Particle in Mid-Air. [Doctoral Dissertation]. York University; 2019. Available from: http://hdl.handle.net/10315/36805
9.
Liu, Shubao.
Statistical Inverse Ray Tracing for Image-Based 3-d
Modeling.
Degree: PhD, Electrical Science and Computer
Engineering, 2011, Brown University
URL: https://repository.library.brown.edu/studio/item/bdr:11238/
► This thesis addresses the problem of capturing 3-d geometry and appearance from multiple 2-d images, which has wide applications in virtual reality, entertainment, human-computer interface,…
(more)
▼ This thesis addresses the problem of capturing
3-
d
geometry and appearance from multiple 2-
d images, which has wide
applications in virtual reality, entertainment, human-computer
interface, surveillance, navigation, and high-level vision tasks
(e.g., visual tracking, classification, recognition, scene analysis
for robotic task accomplishment), etc. This thesis presents an
inverse ray tracing approach based on statistical inference.
Instead of matching image features/pixels across images as most of
the traditional approaches do, the inverse ray tracing approach
models the image generation process directly and searches for the
best
3-
d geometry and surface reflectance model to explain all the
observations. This approach can better handle difficult problems in
multi-view stereo, including large camera baseline, occlusion,
matching ambiguities, irregular concavities and convexities, etc.,
than traditional methods, without additional information and
assumptions, such as initial surface estimates or simple background
assumptions. Here the image generation process is modeled through
volumetric ray tracing, where the occlusion/visibility is
accurately modeled. All the constraints (including ray constraints
and prior knowledge about the geometry) are put into the Ray Markov
Random Field (Ray MRF) formulation. This MRF model is unusual in
the sense that the ray clique, which models the ray-tracing
process, consists of thousands of random variables instead of two
to dozens as in typical MRFs. This large ray clique presents a
major challenge to the inference algorithm, because of the
combinatorial explosion of possible configurations. In this work an
algorithm with linear computational complexity is developed to
solve the estimation problem. More specifically, it is shown that a
highly optimized belief propagation algorithm, deep belief
propagation (DBP), can tackle the challenging problem effectively
by exploring the recursive chain structure of the ray clique
energy. Then the DBP algorithm is also extended to solve the
inference problem for a broader class of higher-order MRFs. The
algorithm developed is capable of handling general and complex
scenes of large varieties, general camera configurations (both
small and large baselines), and can generate accurate and
photo-realistic
3-
d models. The advantages of the proposed approach
have been verified by extensive experiments on standard and locally
collected challenging datasets.
Advisors/Committee Members: Cooper, David (Director), Mundy, Joseph (Reader), Taubin, Gabriel (Reader), Geman, Stuart (Reader).
Subjects/Keywords: computer vision; image-based 3-d modeling; multi-view
stereo; Markov random fields; MRF; belief propagation; dynamic
programming; 3-d reconstruction
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Liu, S. (2011). Statistical Inverse Ray Tracing for Image-Based 3-d
Modeling. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:11238/
Chicago Manual of Style (16th Edition):
Liu, Shubao. “Statistical Inverse Ray Tracing for Image-Based 3-d
Modeling.” 2011. Doctoral Dissertation, Brown University. Accessed March 07, 2021.
https://repository.library.brown.edu/studio/item/bdr:11238/.
MLA Handbook (7th Edition):
Liu, Shubao. “Statistical Inverse Ray Tracing for Image-Based 3-d
Modeling.” 2011. Web. 07 Mar 2021.
Vancouver:
Liu S. Statistical Inverse Ray Tracing for Image-Based 3-d
Modeling. [Internet] [Doctoral dissertation]. Brown University; 2011. [cited 2021 Mar 07].
Available from: https://repository.library.brown.edu/studio/item/bdr:11238/.
Council of Science Editors:
Liu S. Statistical Inverse Ray Tracing for Image-Based 3-d
Modeling. [Doctoral Dissertation]. Brown University; 2011. Available from: https://repository.library.brown.edu/studio/item/bdr:11238/

Harvard University
10.
Kolinski, John Martin.
The role of air in droplet impact on a smooth, solid surface.
Degree: PhD, Engineering and Applied Sciences, 2014, Harvard University
URL: http://nrs.harvard.edu/urn-3:HUL.InstRepos:13064817
► The impact of liquid drops on solid surfaces is a ubiquitous phenomenon in our everyday experience; nevertheless, a general understanding of the dynamics governing droplet…
(more)
▼ The impact of liquid drops on solid surfaces is a ubiquitous phenomenon in our everyday experience; nevertheless, a general understanding of the dynamics governing droplet impact remains elusive. The impact event is understood within a commonly accepted hydrodynamic picture: impact initiates with a rapid shock and a subsequent ejection of a sheet leading to beautiful splashing patterns. However, this picture ignores the essential role of the air that is trapped between the impacting drop and the surface. We describe a new imaging modality that is sensitive to the behavior right at the surface. We show that a very thin film of air, only a few tens of nanometers thick, remains trapped between the falling drop and the surface as the drop spreads. The thin film of air serves to lubricate the drop enabling the fluid to skate on the air film laterally outward at surprisingly high velocities, consistent with theoretical predictions. We directly visualize the rapid spreading dynamics succeeding the impact of a droplet of fluid on a solid, dry surface. We show that the approach of the spreading liquid toward the surface is unstable, and lift-off of the spreading front away from the surface occurs. Lift-off ensues well before the liquid contacts the surface, in contrast with prevailing paradigm where lift-off of the liquid is contingent on solid-liquid contact and the formation of a viscous boundary layer. We show that when a drop impacts an atomically smooth mica surface, a strikingly stable nanometer thin layer of air remains trapped between the liquid and the solid. This layer occludes the formation of contact, and ultimately causes the complete rebound of the drop.
Engineering and Applied Sciences
Advisors/Committee Members: Mahadevan, Lakshminarayanan (advisor), Rubinstein, Shmuel (committee member), Brenner, Michael (committee member), Aizenberg, Joanna (committee member).
Subjects/Keywords: Mechanics; Applied Physics; Droplet impact
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kolinski, J. M. (2014). The role of air in droplet impact on a smooth, solid surface. (Doctoral Dissertation). Harvard University. Retrieved from http://nrs.harvard.edu/urn-3:HUL.InstRepos:13064817
Chicago Manual of Style (16th Edition):
Kolinski, John Martin. “The role of air in droplet impact on a smooth, solid surface.” 2014. Doctoral Dissertation, Harvard University. Accessed March 07, 2021.
http://nrs.harvard.edu/urn-3:HUL.InstRepos:13064817.
MLA Handbook (7th Edition):
Kolinski, John Martin. “The role of air in droplet impact on a smooth, solid surface.” 2014. Web. 07 Mar 2021.
Vancouver:
Kolinski JM. The role of air in droplet impact on a smooth, solid surface. [Internet] [Doctoral dissertation]. Harvard University; 2014. [cited 2021 Mar 07].
Available from: http://nrs.harvard.edu/urn-3:HUL.InstRepos:13064817.
Council of Science Editors:
Kolinski JM. The role of air in droplet impact on a smooth, solid surface. [Doctoral Dissertation]. Harvard University; 2014. Available from: http://nrs.harvard.edu/urn-3:HUL.InstRepos:13064817

Texas A&M University
11.
Patterson, Ryan David.
The Effects of an SMA-based Slat Cove Filler on the Aerodynamic and Structural Characteristics of a Wing Prototype.
Degree: MS, Aerospace Engineering, 2017, Texas A&M University
URL: http://hdl.handle.net/1969.1/173175
► Current and new FAA regulations that are to be phased in have begun to pressure the aerospace industry to develop new noise reduction technologies to…
(more)
▼ Current and new FAA regulations that are to be phased in have begun to pressure the
aerospace industry to develop new noise reduction technologies to reduce aeroacoustic
emissions that proponents say detriment the health and well-being of community members.
With recent technological advancements improving noise emission from aircraft
engines, emissions from airframe noise sources now project a larger footprint on the total
emitted noise. This research proposes to investigate the previously developed
shape
memory alloy based slat cove filler concept and conduct aerodynamic and structural experiments
with the purpose of characterizing the response under relevant flow conditions.
The Texas A&M University 3’ 4’ low speed wind tunnel will be used to determine the
aerodynamic influences of the
shape memory alloys based slat cove filler on wing performance.
A previously developed wing prototype treated with a slat cove filler will be used
to compare aerodynamic effects at multiple slat settings. Structural experiments was conducted
using Digital Image Correlation measurements, and displacement measurements
from a custom-designed laser displacement sensor to determine the structural response of
the
shape memory alloy slat cove filler during a typical retraction cycle under wind tunnel
test conditions. Results from the structural experiments will be used to validate a finite element
analysis model that will be used to further research development into computational
modeling tools.
Advisors/Committee Members: Hartl, Darren J (advisor), Strganac, Thomas W (committee member), Hurlebaus, Stefan (committee member), Tichenor, Nathan (committee member).
Subjects/Keywords: wind tunnel; shape memory alloys; digital image correlation; SMA; DIC; 3-D printed
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Patterson, R. D. (2017). The Effects of an SMA-based Slat Cove Filler on the Aerodynamic and Structural Characteristics of a Wing Prototype. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/173175
Chicago Manual of Style (16th Edition):
Patterson, Ryan David. “The Effects of an SMA-based Slat Cove Filler on the Aerodynamic and Structural Characteristics of a Wing Prototype.” 2017. Masters Thesis, Texas A&M University. Accessed March 07, 2021.
http://hdl.handle.net/1969.1/173175.
MLA Handbook (7th Edition):
Patterson, Ryan David. “The Effects of an SMA-based Slat Cove Filler on the Aerodynamic and Structural Characteristics of a Wing Prototype.” 2017. Web. 07 Mar 2021.
Vancouver:
Patterson RD. The Effects of an SMA-based Slat Cove Filler on the Aerodynamic and Structural Characteristics of a Wing Prototype. [Internet] [Masters thesis]. Texas A&M University; 2017. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1969.1/173175.
Council of Science Editors:
Patterson RD. The Effects of an SMA-based Slat Cove Filler on the Aerodynamic and Structural Characteristics of a Wing Prototype. [Masters Thesis]. Texas A&M University; 2017. Available from: http://hdl.handle.net/1969.1/173175

University of Wollongong
12.
He, Xiaochen.
Registration of data generated by digital fringe projection profilometry.
Degree: Master of Engineering - Research, 2012, University of Wollongong
URL: ;
https://ro.uow.edu.au/theses/3580
► This research implements a digital fringe projection profilometry (DFPP) system that can acquire surface information of the 3-D object from multiple views, and also…
(more)
▼ This research implements a digital fringe projection profilometry (DFPP) system that can acquire surface information of the 3-D object from multiple views, and also develops a program module that can register images from those views in the same coordinate system for 3D modeling.
In this research, a Digital Fringe Projection Profilometry (DFPP) system is employed for data acquisition. The DFPP system employs phase shifting profilometry (PSP) for the phase extraction. The optical geometry of the system is established for the phase to 3-D coordinates of a point cloud with respect to the system coordinate system. The system parameters are estimated through the system calibration module, which works in accordance with the fringe projection and acquisition module, the fringe pattern analysis module and the registration module. These modules achieve the fringe pattern design and projection, fringe pattern capture, projector and camera cooperation, captured fringe analysis, phase map extraction and 3-D point cloud construction.
The algorithm of registration proposed in this research is an enhancement of the conventional Iterative Closest Point (ICP) method with several extensions. The distance function for the correspondence finding is modified to be the weighted linear combination of positions and Euclidean invariant features for improving the probability of convergence. In addition, outliers can be discarded through robust statistics and an adaptive threshold of weighted distances between corresponding point pairs. The modifications aim to realize registration of a couple of partially overlapped point clouds, enhance the possibility of convergence and reduce the iteration times. This research evaluates the convergence behaviour and accuracy of the proposed registration method with Zhang’s conventional ICP method. In the ideal case, the proposed method was found to achieve the goals. The registration module in accordance with the existing fringe pattern projection and analysis module can align range images acquired from multiple views and thus integrate a 3-D model.
Subjects/Keywords: partial registration; 3-D shape measurement; iterative closest point (ICP); invarient features
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
He, X. (2012). Registration of data generated by digital fringe projection profilometry. (Masters Thesis). University of Wollongong. Retrieved from ; https://ro.uow.edu.au/theses/3580
Chicago Manual of Style (16th Edition):
He, Xiaochen. “Registration of data generated by digital fringe projection profilometry.” 2012. Masters Thesis, University of Wollongong. Accessed March 07, 2021.
; https://ro.uow.edu.au/theses/3580.
MLA Handbook (7th Edition):
He, Xiaochen. “Registration of data generated by digital fringe projection profilometry.” 2012. Web. 07 Mar 2021.
Vancouver:
He X. Registration of data generated by digital fringe projection profilometry. [Internet] [Masters thesis]. University of Wollongong; 2012. [cited 2021 Mar 07].
Available from: ; https://ro.uow.edu.au/theses/3580.
Council of Science Editors:
He X. Registration of data generated by digital fringe projection profilometry. [Masters Thesis]. University of Wollongong; 2012. Available from: ; https://ro.uow.edu.au/theses/3580
13.
Lötjönen, Jyrki.
Construction of Boundary Element Models in Bioelectromagnetism.
Degree: 2000, Helsinki University of Technology
URL: http://lib.tkk.fi/Diss/2000/isbn9512249766/
► Multisensor electro- and magnetoencephalographic (EEG and MEG) as well as electro- and magnetocardiographic (ECG and MCG) recordings have been proved useful in noninvasively extracting information…
(more)
▼ Multisensor electro- and magnetoencephalographic (EEG and MEG) as well as electro- and magnetocardiographic (ECG and MCG) recordings have been proved useful in noninvasively extracting information on bioelectric excitation. The anatomy of the patient needs to be taken into account, when excitation sites are localized by solving the inverse problem. In this work, a methodology has been developed to construct patient specific boundary element models for bioelectromagnetic inverse problems from magnetic resonance (MR) data volumes as well as from two orthogonal X-ray projections. The process consists of three main steps:
reconstruction of
3-
D geometry, triangulation of reconstructed geometry, and registration of the model with a bioelectromagnetic measurement system. The
3-
D geometry is reconstructed from MR data by matching a
3-
D deformable boundary element template to images. The deformation is accomplished as an energy minimization process consisting of image and model based terms. The robustness of the matching is improved by multi-resolution and global-to-local approaches as well as using oriented distance maps. A boundary element template is also used when
3-
D geometry is reconstructed from X-ray projections. The deformation is first accomplished in 2-
D for the contours of simulated, built from the template, and real X-ray projections. The produced 2-
D vector field is back-projected and interpolated on the
3-
D template surface. A marching cube triangulation is computed for the reconstructed
3-
D geometry. Thereafter, a non-iterative mesh-simplification method is applied. The method is based on the Voronoi-Delaunay duality on a
3-
D surface with discrete distance measures. Finally, the triangulated surfaces are registered with a bioelectromagnetic measurement utilizing markers. More than fifty boundary element models have been successfully constructed from MR images using the methods developed in this work. A simulation demonstrated the feasibility of X-ray
reconstruction; some practical problems of X-ray imaging need to be solved to begin tests with real data.
Advisors/Committee Members: Helsinki University of Technology, Department of Engineering Physics and Mathematics, Laboratory of Biomedical Engineering.
Subjects/Keywords: segmentation; triangulation; 3-D reconstruction; registration
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Lötjönen, J. (2000). Construction of Boundary Element Models in Bioelectromagnetism. (Thesis). Helsinki University of Technology. Retrieved from http://lib.tkk.fi/Diss/2000/isbn9512249766/
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Lötjönen, Jyrki. “Construction of Boundary Element Models in Bioelectromagnetism.” 2000. Thesis, Helsinki University of Technology. Accessed March 07, 2021.
http://lib.tkk.fi/Diss/2000/isbn9512249766/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Lötjönen, Jyrki. “Construction of Boundary Element Models in Bioelectromagnetism.” 2000. Web. 07 Mar 2021.
Vancouver:
Lötjönen J. Construction of Boundary Element Models in Bioelectromagnetism. [Internet] [Thesis]. Helsinki University of Technology; 2000. [cited 2021 Mar 07].
Available from: http://lib.tkk.fi/Diss/2000/isbn9512249766/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Lötjönen J. Construction of Boundary Element Models in Bioelectromagnetism. [Thesis]. Helsinki University of Technology; 2000. Available from: http://lib.tkk.fi/Diss/2000/isbn9512249766/
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Penn State University
14.
Meinert, Kenneth C.
The Beta To Alpha Transformations In Nickel Aluminum Bronzes At Low Undercoolings.
Degree: 2013, Penn State University
URL: https://submit-etda.libraries.psu.edu/catalog/17503
► The results presented in this dissertation represent the most detailed account of the bcc⇄fcc (β→α) transformation in a system that is non-ferrous. As such, it…
(more)
▼ The results presented in this dissertation represent the most detailed account of the bcc⇄fcc (β→α) transformation in a system that is non-ferrous. As such, it provides a benchmark against which the multitudinous studies on phase transformation in steels may be gauged. The primary focus of the experimental program has been on the development of intragranular microstructures, although grain boundary related transformations were also examined. The only fundamental intragranular precipitate
shape that we encounter at low undercoolings was a Widmanstätten rod with a 〈111〉_β growth direction. The primary nucleation sites for these Widmanstätten rods are inclusions.
The complex nature of the intragranular microstructures necessitated the development of a quick, reproducible method for assembling three-dimensional reconstructions from a sequence of serial sections that sample a large volume. The method developed used a laser in a novel way for providing fiduciary markers, and the use of freely accessible software permitted a straightforward method of generating the
3-
D reconstruction.
In terms of the intragranular bcc→fcc transformation, the results cover the spectrum of nucleation, growth, and coarsening and we have proposed a single mechanism that, at the very least, is operative in all three stages; that mechanism is sympathetic nucleation. For example, it has been found that following the initial inclusion nucleation event, the entire transformation proceeds via sympathetic nucleation of two particular types, facet-to-facet and end-to-end. Somewhat surprisingly, we are the first to recognize the equivalence of facet-to-facet sympathetic nucleation and the homogeneous nucleation of growth ledges. We may thus model both nucleation and growth in terms of a single mechanism. What is even more intriguing, we may exploit facet-to-facet and end-to-end sympathetic nucleation to propose a mechanism of precipitate coarsening, the replacement of fine distributions of small precipitates by a much coarser distribution of large precipitates. This coarsening reaction occurs as the sympathetically nucleated rod-like particles start to tile space, creating large (20-50µm wide) rod-like colonies from the initial (≃1µm wide) inclusion nucleated rods.
Our research on sympathetic nucleation in this system has an
impact outside the narrow confines of the nickel-aluminum bronze that we used as a model material. For the first time, sympathetic nucleation has been unambiguously identified. Even though Aaronson and Wells first proposed the existence of sympathetic nucleation over 50 years ago, the evidence presented in its favor was always suspect, there was always at least one counter-claim that could explain the observed experimental images; in terms of impingement, polygonization, and the proximity of grain boundaries. We have shown, unequivocally, that impingement cannot produce the microstructures that we developed. Likewise, polygonization is not a problem, and the large beta grain size that we employed in the early stages of the…
Advisors/Committee Members: Paul Raymond Howell, Dissertation Advisor/Co-Advisor, Paul Raymond Howell, Committee Chair/Co-Chair, Richard Martukanitz, Committee Member, James Hansell Adair, Committee Member, Zi Kiu Liu, Committee Member.
Subjects/Keywords: Nickel Aluminum Bronze; Sympathetic Nucleation; BCC-FCC Transformation; 3-D Reconstruction; Inclusion Nucleation
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Meinert, K. C. (2013). The Beta To Alpha Transformations In Nickel Aluminum Bronzes At Low Undercoolings. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/17503
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Meinert, Kenneth C. “The Beta To Alpha Transformations In Nickel Aluminum Bronzes At Low Undercoolings.” 2013. Thesis, Penn State University. Accessed March 07, 2021.
https://submit-etda.libraries.psu.edu/catalog/17503.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Meinert, Kenneth C. “The Beta To Alpha Transformations In Nickel Aluminum Bronzes At Low Undercoolings.” 2013. Web. 07 Mar 2021.
Vancouver:
Meinert KC. The Beta To Alpha Transformations In Nickel Aluminum Bronzes At Low Undercoolings. [Internet] [Thesis]. Penn State University; 2013. [cited 2021 Mar 07].
Available from: https://submit-etda.libraries.psu.edu/catalog/17503.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Meinert KC. The Beta To Alpha Transformations In Nickel Aluminum Bronzes At Low Undercoolings. [Thesis]. Penn State University; 2013. Available from: https://submit-etda.libraries.psu.edu/catalog/17503
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
15.
Mibu, Hisakazu; Tanaka, Nobumichi; Hosokawa, Yukinari; Kumamoto, Hiromi; Marugami, Nagaaki; Hirao, Yoshihiko.
Estimated functional renal parenchymal volume predicts the split renal function following renal surgery. : 機能的腎体積測定による術後分腎機能評価の検討.
Degree: 博士(医学), 2015, Nara Medical University / 奈良県立医科大学
URL: http://hdl.handle.net/10564/3107
► PURPOSE:The change in functional renal volume (FRV) has an absolute influence on renal function after nephrectomy (Nx) or nephron-sparing surgery (NSS). In this study, we…
(more)
▼ PURPOSE:The change in functional renal volume (FRV) has an absolute influence on renal function after nephrectomy (Nx) or nephron-sparing surgery (NSS). In this study, we prospectively examined whether the postoperative renal function following Nx and NSS could be accurately predicted and assessed the reproducibility of our newly developed 3-D image reconstruction system (Kashihara) to measure the FRV.METHODS:We enrolled 98 patients who underwent Nx and 41 patients who underwent NSS from April 2006 to September 2009 to predict postoperative FRV and renal function. FRV was measured before and after (1 month and 1 year) renal surgery. The postoperative estimated glomerular filtration rate (eGFR) was predicted from the preoperative eGFR calculated from the serum creatinine (sCr) level and the ratio of the postoperative/preoperative FRV. To assess the reproducibility and accuracy of our newly developed 3-dimensional (3-D) image reconstruction system, FRV was measured by five examiners using images obtained by CT (five cases) and MRI (five cases).RESULTS:Significant correlation was found both for FRV and for renal function between the predictive values and the actually measured values at 1 month and 1 year after surgery, not only in the Nx group, but also in the NSS group. The accuracy and reproducibility could be confirmed both with CT and MRI studies.CONCLUSIONS:The postoperative FRV and renal function could be predicted preoperatively using a 3-D image reconstructive system, preoperative routine diagnostic imaging, and preoperative sCr level.
博士(医学)・乙第1369号・平成27年11月27日
© Springer-Verlag Berlin Heidelberg 2015
The final publication is available at Springer via http://dx.doi.org/10.1007/s00345-014-1470-7
Subjects/Keywords: Renal function; Renal volume; Nephrectomy; Nephron-sparing surgery; 3-D image reconstruction
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Mibu, Hisakazu; Tanaka, Nobumichi; Hosokawa, Yukinari; Kumamoto, Hiromi; Marugami, Nagaaki; Hirao, Y. (2015). Estimated functional renal parenchymal volume predicts the split renal function following renal surgery. : 機能的腎体積測定による術後分腎機能評価の検討. (Thesis). Nara Medical University / 奈良県立医科大学. Retrieved from http://hdl.handle.net/10564/3107
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Mibu, Hisakazu; Tanaka, Nobumichi; Hosokawa, Yukinari; Kumamoto, Hiromi; Marugami, Nagaaki; Hirao, Yoshihiko. “Estimated functional renal parenchymal volume predicts the split renal function following renal surgery. : 機能的腎体積測定による術後分腎機能評価の検討.” 2015. Thesis, Nara Medical University / 奈良県立医科大学. Accessed March 07, 2021.
http://hdl.handle.net/10564/3107.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Mibu, Hisakazu; Tanaka, Nobumichi; Hosokawa, Yukinari; Kumamoto, Hiromi; Marugami, Nagaaki; Hirao, Yoshihiko. “Estimated functional renal parenchymal volume predicts the split renal function following renal surgery. : 機能的腎体積測定による術後分腎機能評価の検討.” 2015. Web. 07 Mar 2021.
Vancouver:
Mibu, Hisakazu; Tanaka, Nobumichi; Hosokawa, Yukinari; Kumamoto, Hiromi; Marugami, Nagaaki; Hirao Y. Estimated functional renal parenchymal volume predicts the split renal function following renal surgery. : 機能的腎体積測定による術後分腎機能評価の検討. [Internet] [Thesis]. Nara Medical University / 奈良県立医科大学; 2015. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/10564/3107.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Mibu, Hisakazu; Tanaka, Nobumichi; Hosokawa, Yukinari; Kumamoto, Hiromi; Marugami, Nagaaki; Hirao Y. Estimated functional renal parenchymal volume predicts the split renal function following renal surgery. : 機能的腎体積測定による術後分腎機能評価の検討. [Thesis]. Nara Medical University / 奈良県立医科大学; 2015. Available from: http://hdl.handle.net/10564/3107
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Indian Institute of Science
16.
Deepu, P.
Dynamics of Droplets Under Support, Acoustic And/Or Ambient Flow Excitation.
Degree: PhD, Faculty of Engineering, 2018, Indian Institute of Science
URL: http://etd.iisc.ac.in/handle/2005/3459
► The first step on the way to understanding the complicated dynamics of spray is to study the behavior of isolated droplets. In many industrial and…
(more)
▼ The first step on the way to understanding the complicated dynamics of spray is to study the behavior of isolated droplets. In many industrial and natural processes such as turbulent combustion, agricultural sprays, spray cooler, falling raindrops and cloud evolution the
droplet is subjected to a chaotic unsteady external flow field. The interaction between the liquid and gaseous phases results in very intricate
droplet dynamics like capillary instabilities, atomization,
droplet collision and coalescence and vaporization, to name a few.
In this dissertation, the focus is on
shape oscillations, atomization and vaporization dynamics of pendant and sessile droplets. A
droplet residing on a substrate which vibrates vertically at ultrasonic frequency will exhibit different modes of
shape oscillation. The competition between capillary forces and inertia forces is basically responsible for these oscillations. However, when an acoustic force field is introduced asymmetrically around the
droplet, we discover with the help of ultra high-speed imaging, a new
droplet spreading phase. This new method of
droplet manipulation could nd application in micro fluidics and lab-on-a-chip systems. By lading the
droplet with nanoparticles, the spreading rate can be easily controlled. The spreading phase is followed by an atomization phase where surface ligaments grow to disintegrate into daughter droplets; the intensity of atomization is found to decrease with increase in fluid viscosity. The ability to control atomization characteristics of droplets by lading them with nanoparticles is a powerful technique that may be implemented in spray coolers and combustors to control the spray characteristics or combustion efficiency. Both the spreading and ligament dynamics have been theoretically simulated and the physics behind the observed trends is explained. The growth rate of the ligaments is found to be governed by Weber number modified to include the acoustic pressure level of the standing wave. The frequency of ligament breakup is found to decrease with fluid viscosity and this observation is adequately supported by a theory developed based on the evolution crater on the
droplet surface.
Turning now to the pendant droplets, by decomposing the
droplet shape into Legendre modes, the
shape oscillations exhibited by a
droplet hanging from the junction of cross-wire placed at the center of an air jet is studied. Both high-speed imaging and hot-wire anemometry are employed. The driving force of oscillation of droplets subjected to the air jet is proved to be the inherent pressure fluctuations in the jet. The effect of surface tension, viscosity and Reynolds number on the
shape oscillation level has been examined. The first experimental evidence of viscous attenuation of lower frequencies in a particular mode in glycerol/water mixture is reported. A theoretical model was developed to simulate the
droplet shape oscillations induced by different ambient flow fields like pulsatile flow, vortical flow and flow with broadband energy spectrum. The time…
Advisors/Committee Members: Basu, Saptarshi (advisor).
Subjects/Keywords: Droplets; Droplet Dynamics; Droplet Atomization; Droplet Shape Oscillations; Droplet Vaporization; Droplet Spreading; Sessile Droplets; Pendant Droplets; Droplets - Flow Visualization; Rayleigh Modes; Droplet - Acoustic Field; Excited Droplets; Fluid Dynamics
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Deepu, P. (2018). Dynamics of Droplets Under Support, Acoustic And/Or Ambient Flow Excitation. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/3459
Chicago Manual of Style (16th Edition):
Deepu, P. “Dynamics of Droplets Under Support, Acoustic And/Or Ambient Flow Excitation.” 2018. Doctoral Dissertation, Indian Institute of Science. Accessed March 07, 2021.
http://etd.iisc.ac.in/handle/2005/3459.
MLA Handbook (7th Edition):
Deepu, P. “Dynamics of Droplets Under Support, Acoustic And/Or Ambient Flow Excitation.” 2018. Web. 07 Mar 2021.
Vancouver:
Deepu P. Dynamics of Droplets Under Support, Acoustic And/Or Ambient Flow Excitation. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2018. [cited 2021 Mar 07].
Available from: http://etd.iisc.ac.in/handle/2005/3459.
Council of Science Editors:
Deepu P. Dynamics of Droplets Under Support, Acoustic And/Or Ambient Flow Excitation. [Doctoral Dissertation]. Indian Institute of Science; 2018. Available from: http://etd.iisc.ac.in/handle/2005/3459
17.
TAN CHIAN YANG.
FePt nanocluster assembled films : Fabrication, characterization and properties.
Degree: 2007, National University of Singapore
URL: http://scholarbank.nus.edu.sg/handle/10635/16156
Subjects/Keywords: FePt; nanoparticle; cluster beam deposition; TEM; shape; 3 D
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
YANG, T. C. (2007). FePt nanocluster assembled films : Fabrication, characterization and properties. (Thesis). National University of Singapore. Retrieved from http://scholarbank.nus.edu.sg/handle/10635/16156
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
YANG, TAN CHIAN. “FePt nanocluster assembled films : Fabrication, characterization and properties.” 2007. Thesis, National University of Singapore. Accessed March 07, 2021.
http://scholarbank.nus.edu.sg/handle/10635/16156.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
YANG, TAN CHIAN. “FePt nanocluster assembled films : Fabrication, characterization and properties.” 2007. Web. 07 Mar 2021.
Vancouver:
YANG TC. FePt nanocluster assembled films : Fabrication, characterization and properties. [Internet] [Thesis]. National University of Singapore; 2007. [cited 2021 Mar 07].
Available from: http://scholarbank.nus.edu.sg/handle/10635/16156.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
YANG TC. FePt nanocluster assembled films : Fabrication, characterization and properties. [Thesis]. National University of Singapore; 2007. Available from: http://scholarbank.nus.edu.sg/handle/10635/16156
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
18.
Cheng, Shing Shin.
Design, development, and evaluation of meso-scale robotic system for deep intracranial tumor removal.
Degree: PhD, Biomedical Engineering (Joint GT/Emory Department), 2018, Georgia Tech
URL: http://hdl.handle.net/1853/61640
► It remains a challenging procedure to remove deep brain tumor due to its location around critical brain structures, the limitations in existing surgical tools, and…
(more)
▼ It remains a challenging procedure to remove deep brain tumor due to its location around critical brain structures, the limitations in existing surgical tools, and the lack of real-time image guidance. The Minimally Invasive Neurosurgical Intracranial Robot (MINIR-II) project aims at combining flexible robotic technology, minimally invasive approach, and magnetic resonance imaging (MRI) to achieve more precise and complete removal of brain tumor. MINIR-II is a spring-based
3-
D printed flexible robot that is tendon-driven and equipped with electrocautery, suction and irrigation capabilities. A novel central tendon routing mechanism has been employed to enable independent segment control in a tight workspace. To improve stability of the surgical procedure, a stiffness tunable MINIR-II with
shape memory alloy (SMA) spring segments has also been developed and characterized to investigate the effect of tendon locking and SMA segment stiffening on the stiffness of individual segment. SMA springs have also been used as a proof of-concept MRI-compatible actuator for MINIR-II. To improve the actuation bandwidth, cooling module-integrated SMA springs have been developed together with a new actuation mechanism involving the alternate passage of water and compressed air. A phenomenological model and a heat transfer model were developed and verified to model the actuator behavior in antagonistic configuration. With the robot developed and tested for its performance and MRI-compatibility, ultrasonic motors were used instead of SMA springs to provide a more reliable actuation solution. A remote actuation strategy with three different transmission designs was implemented due to the interference of ultrasonic motors and drivers with the MR image quality when they are in close proximity to the MR isocenter. The inefficiency in force transmission in the first flexible Bowden cable transmission led to the development of the second rigid transmission as well as the third improved version of the rigid transmission. The robotic system was finally evaluated in terms of its workspace, segment coupling effectiveness, precision, repeatability, and hysteresis behavior. A compact MRI compatible robotic system used to actuate a multi-DoF skull-mounted flexible robot has been presented. Research innovation could be found in the
3-
D printed flexible robot design, compact SMA spring cooling module development, stiffness modulated robot design, and transmission design in the MR environment. Intrinsic sensor integration and more user-friendly control interface are two important future works that would take the robotic system one step closer to being clinically evaluated.
Advisors/Committee Members: Desai, Jaydev (advisor), Ueda, Jun (committee member), Hammond, Frank (committee member), Rogers, Jonathan (committee member), Oshinski, John (committee member).
Subjects/Keywords: Surgical and medical robot; Flexible robot; Mechanism design; Neurosurgery; Magnetic resonance imaging; Shape memory alloy; Ultrasonic motors; 3-D printing
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Cheng, S. S. (2018). Design, development, and evaluation of meso-scale robotic system for deep intracranial tumor removal. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/61640
Chicago Manual of Style (16th Edition):
Cheng, Shing Shin. “Design, development, and evaluation of meso-scale robotic system for deep intracranial tumor removal.” 2018. Doctoral Dissertation, Georgia Tech. Accessed March 07, 2021.
http://hdl.handle.net/1853/61640.
MLA Handbook (7th Edition):
Cheng, Shing Shin. “Design, development, and evaluation of meso-scale robotic system for deep intracranial tumor removal.” 2018. Web. 07 Mar 2021.
Vancouver:
Cheng SS. Design, development, and evaluation of meso-scale robotic system for deep intracranial tumor removal. [Internet] [Doctoral dissertation]. Georgia Tech; 2018. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1853/61640.
Council of Science Editors:
Cheng SS. Design, development, and evaluation of meso-scale robotic system for deep intracranial tumor removal. [Doctoral Dissertation]. Georgia Tech; 2018. Available from: http://hdl.handle.net/1853/61640

University of Illinois – Chicago
19.
Russo, Antonio.
Numerical Simulation of Droplet Impact on Wettability-Patterned Surfaces.
Degree: 2016, University of Illinois – Chicago
URL: http://hdl.handle.net/10027/21361
► The analysis of droplet impact on micro-structured surfaces is a very challenging problem since it involves several physical phenomena interacting with one each other at…
(more)
▼ The analysis of
droplet impact on micro-structured surfaces is a very challenging problem since it involves several physical phenomena interacting with one each other at levels of correlation depending on space and time. Moreover, understanding the dynamics and the main parameters a ecting the
droplet behavior can give the capability to control and take advantage of its potential in di erent practical applications. In this work, rstly a phenomenological investigation of the phenomenon is provided involving models present in the literature and proposed
theoretical analyses. Some fundamentals regarding numerical methods used in Computational
Fluids Dynamics are presented in order to give the basis for the simulation set-up: particular
attention is given to the contact angle boundary condition. Successively, several case studies
are run with the open source software OpenFOAM: impacts on both surfaces with uniform and
heterogeneous wettability characteristics are numerically simulated, with particular attention to cases exhibiting "morphing" and "vectoring" outcomes.
Advisors/Committee Members: Megaridis, Constantine M. (advisor), Xu, Jie (committee member), Asinari, Pietro (committee member).
Subjects/Keywords: Numerical simulations; Droplet impact; Wettability-patterned surfaces.
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Russo, A. (2016). Numerical Simulation of Droplet Impact on Wettability-Patterned Surfaces. (Thesis). University of Illinois – Chicago. Retrieved from http://hdl.handle.net/10027/21361
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Russo, Antonio. “Numerical Simulation of Droplet Impact on Wettability-Patterned Surfaces.” 2016. Thesis, University of Illinois – Chicago. Accessed March 07, 2021.
http://hdl.handle.net/10027/21361.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Russo, Antonio. “Numerical Simulation of Droplet Impact on Wettability-Patterned Surfaces.” 2016. Web. 07 Mar 2021.
Vancouver:
Russo A. Numerical Simulation of Droplet Impact on Wettability-Patterned Surfaces. [Internet] [Thesis]. University of Illinois – Chicago; 2016. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/10027/21361.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Russo A. Numerical Simulation of Droplet Impact on Wettability-Patterned Surfaces. [Thesis]. University of Illinois – Chicago; 2016. Available from: http://hdl.handle.net/10027/21361
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Chicago
20.
Elsharkawy, Mohamed.
Study of Effects of Surface Wettability on Frosting and Droplet Manipulation.
Degree: 2018, University of Illinois – Chicago
URL: http://hdl.handle.net/10027/22641
► The impact and subsequent freezing of water droplets on solid surfaces is a common mechanism for surface icing and frosting. We investigate this mechanism by…
(more)
▼ The
impact and subsequent freezing of water droplets on solid surfaces is a common
mechanism for surface icing and frosting. We investigate this mechanism by
decoupling it into two separate phenomena: 1)
Impact of droplets on solid surfaces
and 2) Freezing, and subsequent frosting, of surfaces under wet conditions. Our
goal is to unravel the role that the underlying wettability plays for both of these
phenomena.
Advisors/Committee Members: Megaridis, Constantine M (advisor), Xu, Jie (committee member), Schlossman, Mark (committee member), Ganguly, Ranjan (committee member), Asinari , Pietro (committee member), Megaridis, Constantine M (chair).
Subjects/Keywords: wettability; superhydrophobicity; droplet impact; icing; frosting
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Elsharkawy, M. (2018). Study of Effects of Surface Wettability on Frosting and Droplet Manipulation. (Thesis). University of Illinois – Chicago. Retrieved from http://hdl.handle.net/10027/22641
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Elsharkawy, Mohamed. “Study of Effects of Surface Wettability on Frosting and Droplet Manipulation.” 2018. Thesis, University of Illinois – Chicago. Accessed March 07, 2021.
http://hdl.handle.net/10027/22641.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Elsharkawy, Mohamed. “Study of Effects of Surface Wettability on Frosting and Droplet Manipulation.” 2018. Web. 07 Mar 2021.
Vancouver:
Elsharkawy M. Study of Effects of Surface Wettability on Frosting and Droplet Manipulation. [Internet] [Thesis]. University of Illinois – Chicago; 2018. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/10027/22641.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Elsharkawy M. Study of Effects of Surface Wettability on Frosting and Droplet Manipulation. [Thesis]. University of Illinois – Chicago; 2018. Available from: http://hdl.handle.net/10027/22641
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
21.
Lawin, Felix Järemo.
Depth Data Processing and 3D Reconstruction Using the Kinect v2.
Degree: Faculty of Science & Engineering, 2015, Linköping UniversityLinköping University
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-121401
► The Kinect v2 is a RGB-D sensor manufactured as a gesture interaction tool for the entertainment console XBOX One. In this thesis we will…
(more)
▼ The Kinect v2 is a RGB-D sensor manufactured as a gesture interaction tool for the entertainment console XBOX One. In this thesis we will use it to perform 3D reconstruction and investigate its ability to measure depth. In order to sense both color and depth the Kinect v2 has two cameras: one RGB camera and one infrared camera used to produce depth and near infrared images. These cameras need to be calibrated if we want to use them for 3D reconstruction. We present a calibration procedure for simultaneously calibrating the cameras and extracting their relative pose. This enables us to construct colored meshes of the environment. When we know the camera parameters of the infrared camera, the depth images could be used to perform the Kinectfusion algorithm. This produces well-formed meshes of the environment by combining many depth frames taken from several camera poses.The Kinect v2 uses a time-of-flight technology were the phase shifts are extracted from amplitude modulated infrared light signals produced by an emitter. The extracted phase shifts are then converted to depth values. However, the extraction of phase shifts includes a phase unwrapping procedure, which is sensitive to noise and can result in large depth errors.By utilizing the ability to access the raw phase measurements from the device we managed to modify the phase unwrapping procedure. This new procedure includes an extraction of several hypotheses for the unwrapped phase and a spatial propagation to select amongst them. This proposed method has been compared with the available drivers in the open source library libfreenect2 and the Microsoft Kinect SDK v2. Our experiments show that the depth images of the two available drivers have similar quality and our proposed method improves over libfreenect2. The calculations in the proposed method are more expensive than those in libfreenect2 but it still runs at 2.5× real time. However, contrary to libfreenect2 the proposed method lacks a filter that removes outliers from the depth images. It turned out that this is an important feature when performing Kinect fusion and future work should thus be focused on adding an outlier filter.
Subjects/Keywords: RGB-D; time-of-flight; 3D reconstruction; Kinect v2
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Lawin, F. J. (2015). Depth Data Processing and 3D Reconstruction Using the Kinect v2. (Thesis). Linköping UniversityLinköping University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-121401
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Lawin, Felix Järemo. “Depth Data Processing and 3D Reconstruction Using the Kinect v2.” 2015. Thesis, Linköping UniversityLinköping University. Accessed March 07, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-121401.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Lawin, Felix Järemo. “Depth Data Processing and 3D Reconstruction Using the Kinect v2.” 2015. Web. 07 Mar 2021.
Vancouver:
Lawin FJ. Depth Data Processing and 3D Reconstruction Using the Kinect v2. [Internet] [Thesis]. Linköping UniversityLinköping University; 2015. [cited 2021 Mar 07].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-121401.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Lawin FJ. Depth Data Processing and 3D Reconstruction Using the Kinect v2. [Thesis]. Linköping UniversityLinköping University; 2015. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-121401
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Vrije Universiteit Amsterdam
22.
Tarapoanca, M.
Architecture, 3D geometry and tectonic evolution of the Carpathians foreland basin
.
Degree: 2004, Vrije Universiteit Amsterdam
URL: http://hdl.handle.net/1871/9027
Subjects/Keywords: Reconstruction of the 3-D architecture of the Carpathian foredeep.;
tectonics;
modeling;
Carpathians;
foreland basin
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Tarapoanca, M. (2004). Architecture, 3D geometry and tectonic evolution of the Carpathians foreland basin
. (Doctoral Dissertation). Vrije Universiteit Amsterdam. Retrieved from http://hdl.handle.net/1871/9027
Chicago Manual of Style (16th Edition):
Tarapoanca, M. “Architecture, 3D geometry and tectonic evolution of the Carpathians foreland basin
.” 2004. Doctoral Dissertation, Vrije Universiteit Amsterdam. Accessed March 07, 2021.
http://hdl.handle.net/1871/9027.
MLA Handbook (7th Edition):
Tarapoanca, M. “Architecture, 3D geometry and tectonic evolution of the Carpathians foreland basin
.” 2004. Web. 07 Mar 2021.
Vancouver:
Tarapoanca M. Architecture, 3D geometry and tectonic evolution of the Carpathians foreland basin
. [Internet] [Doctoral dissertation]. Vrije Universiteit Amsterdam; 2004. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1871/9027.
Council of Science Editors:
Tarapoanca M. Architecture, 3D geometry and tectonic evolution of the Carpathians foreland basin
. [Doctoral Dissertation]. Vrije Universiteit Amsterdam; 2004. Available from: http://hdl.handle.net/1871/9027

University of Ottawa
23.
Remmler, Lauren.
Growth and Morphogenesis: Quantifying 3D Surface Growth Patterns and Shape Changes in Developing Leaves
.
Degree: 2011, University of Ottawa
URL: http://hdl.handle.net/10393/20669
► ABSTRACT: Formation of organ shape is an intriguing yet largely unanswered question in developmental biology. Shapes arise as a result of tightly controlled spatial variation…
(more)
▼ ABSTRACT: Formation of organ shape is an intriguing yet largely unanswered question in developmental biology. Shapes arise as a result of tightly controlled spatial variation in the rates and directions of tissue expansion over the course of development; therefore, quantifying these growth patterns could provide information about the underlying mechanisms of morphogenesis. Here we present a novel technique and computational tools for quantifying growth and shape changes in developing leaves, with a few unique capabilities. This includes the ability to compute growth from three-dimensional (3D) coordinates, which makes this the first method suitable for studying leaf growth in species or mutants with non-flat leaves, as well as small leaves at early stages of development, and allows us to simultaneously capture 3D shape changes. In the following, we apply these methods to study growth and shape changes in the first rosette leaf of Arabidopsis thaliana. Results reveal clear spatiotemporal patterns in growth rates and directionality, and tissue deformation maps illustrate an intricate balance involved in maintaining a relatively flat leaf surface in wild type leaves. Semi-automated tools presented make a high throughput of data possible with this method, and algorithms for generating mean maps of growth will make it possible to perform standardized comparative analyses of growth patterns between wild type and mutants and/or between species. The methods presented in this thesis will therefore be useful for studying leaf growth and shape, to further investigate the mechanisms of morphogenesis.
RÉSUMÉ: Comment un organe acquiert sa forme particulière au cours du développement est une question intéressante mais largement non résolue. La forme d’un organe résulte de la façon dont les taux et directions de croissance de ses tissues varient dans l’espace et dans le temps. Quantifier les motifs de croissance est donc nécessaire pout élucider les mécanismes sous-jacents de la morphogenèse. Nous présentons ici une nouvelle méthodologie pour quantifier la croissance et les changements de forme dans les feuilles en développement. Cette méthodologie s’appuie sur le développement de nouvelles techniques expérimentales et de programmes informatiques, et présente des avantages uniques : la croissance de la surface des feuilles et le changement de forme peuvent être analysés en trois dimensions (3D), pour une longue période et de large déformations. De plus l’analyse de multiples échantillons permet de générer une cartographie moyenne des motifs de croissance à la surface des feuilles au cours de leur développement, ainsi qu’une description quantitative de la déformation des tissus sous l’effet de leur croissance. Dans cette thèse, nous présentons les résultats de croissance et de changements de forme de la première feuille de rosette d'Arabidopsis thaliana au cours de son développement. Les cartes moyennes de croissance révèlent des motifs spatio-temporels évidents tant pour les taux que pour les directions de croissance. De plus,…
Subjects/Keywords: Morphogenesis;
Arabidopsis thaliana;
Leaf development;
3-dimensional;
Leaf shape;
Growth of leaves
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APA (6th Edition):
Remmler, L. (2011). Growth and Morphogenesis: Quantifying 3D Surface Growth Patterns and Shape Changes in Developing Leaves
. (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/20669
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Remmler, Lauren. “Growth and Morphogenesis: Quantifying 3D Surface Growth Patterns and Shape Changes in Developing Leaves
.” 2011. Thesis, University of Ottawa. Accessed March 07, 2021.
http://hdl.handle.net/10393/20669.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Remmler, Lauren. “Growth and Morphogenesis: Quantifying 3D Surface Growth Patterns and Shape Changes in Developing Leaves
.” 2011. Web. 07 Mar 2021.
Vancouver:
Remmler L. Growth and Morphogenesis: Quantifying 3D Surface Growth Patterns and Shape Changes in Developing Leaves
. [Internet] [Thesis]. University of Ottawa; 2011. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/10393/20669.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Remmler L. Growth and Morphogenesis: Quantifying 3D Surface Growth Patterns and Shape Changes in Developing Leaves
. [Thesis]. University of Ottawa; 2011. Available from: http://hdl.handle.net/10393/20669
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Connecticut
24.
shen, zongyuan.
3-D Coverage Path Planning for Underwater Terrain Mapping.
Degree: MS, Electrical Engineering, 2017, University of Connecticut
URL: https://opencommons.uconn.edu/gs_theses/1133
► This thesis presents an autonomous approach of 3-D coverage of underwater terrain using multi-level coverage trees. An autonomous underwater vehicle (AUV) equipped with multi-beam…
(more)
▼ This thesis presents an autonomous approach of
3-
D coverage of underwater terrain using multi-level coverage trees. An autonomous underwater vehicle (AUV) equipped with multi-beam sonar sensors, Doppler velocity log (DVL) and inertial measurement unit (IMU) sensors is used to achieve this goal. The underwater
3-
D search space is represented by a multi-level coverage tree which is generated online based on the obstacle information collected by the AUV. The nodes of the tree correspond to safe sub-areas for AUV navigation which are identified based on obstacle density in neighborhood of free cells. Standard tree traversal strategies like depth-first-search (DFS) and breath-first-search (BFS) are then used for visiting all the nodes of the tree thus securing complete coverage of the
3-
D space. The terrain data collected by the AUV during tree coverage is used offline for the
3-
D reconstruction of seabed using alpha shapes algorithm. The performance of this method is validated using a high-fidelity underwater simulator UWSim based on Robot Operating System (ROS). The simulations show that the proposed methodology achieves complete coverage and accurate
reconstruction of
3-
D underwater terrain.
Advisors/Committee Members: Shalabh Gupta, Shengli Zhou, Abhishek Dutta, Shalabh Gupta.
Subjects/Keywords: 3-D coverage path planning; underwater path planning; underwater terrain reconstruction; AUV; multi-level coverage tree; travelling salesman problem
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MLA ·
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CSE |
Export
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Manager
APA (6th Edition):
shen, z. (2017). 3-D Coverage Path Planning for Underwater Terrain Mapping. (Masters Thesis). University of Connecticut. Retrieved from https://opencommons.uconn.edu/gs_theses/1133
Chicago Manual of Style (16th Edition):
shen, zongyuan. “3-D Coverage Path Planning for Underwater Terrain Mapping.” 2017. Masters Thesis, University of Connecticut. Accessed March 07, 2021.
https://opencommons.uconn.edu/gs_theses/1133.
MLA Handbook (7th Edition):
shen, zongyuan. “3-D Coverage Path Planning for Underwater Terrain Mapping.” 2017. Web. 07 Mar 2021.
Vancouver:
shen z. 3-D Coverage Path Planning for Underwater Terrain Mapping. [Internet] [Masters thesis]. University of Connecticut; 2017. [cited 2021 Mar 07].
Available from: https://opencommons.uconn.edu/gs_theses/1133.
Council of Science Editors:
shen z. 3-D Coverage Path Planning for Underwater Terrain Mapping. [Masters Thesis]. University of Connecticut; 2017. Available from: https://opencommons.uconn.edu/gs_theses/1133

Universiteit Utrecht
25.
Müllenmeister, C.C.
Simulation of Water Droplets
using Metaballs on mobile phones.
Degree: 2012, Universiteit Utrecht
URL: http://dspace.library.uu.nl:8080/handle/1874/255385
► In the game Hydrotilt, the player controls a water droplet that consists of metaballs. This droplet does not have all the physical abilities of a…
(more)
▼ In the game Hydrotilt, the player controls a water
droplet that consists of metaballs. This
droplet does not have all the physical abilities of a water
droplet in the game. For a newer version of Hydrotilt meant to run on mobile phones, Codeglue seeks for a realistic water
droplet simulation using metaballs. Earlier researches of water
droplet simulation used high computational resources device. Mobile phones on the other hand are low resources devices.
Therefore, in the scope of this thesis we implemented in an experiment set-up a simulation of water droplets using metaballs for mobile phones. In this implementation, you have two kinds of water droplets. The first one is a static water
droplet that waits until it is close enough to another
droplet for merging. The other kind of
droplet is a moving water
droplet. This
droplet moves according to the tilt of the mobile phone just like in the game Hydrotilt.
Furthermore, metaballs need another algorithm to be able to generate the surface. In our implementation, two algorithms were used for that: octree and marching cube algorithm. Octree is slower than the marching cube algorithm, but needs less memory which is one of the low resources on mobile phones.
In the simulation of the water
droplet, the moving water
droplet will change its
shape while moving from a sphere-like
shape to a water
droplet like
shape. Next to this, there are two techniques implemented to calculate the movement of the
droplet. The first one is a following one that behaves like a spring and the second one is an interpolation of the movement.
Testing of the experiment set-up showed that the simulation runs successfully on mobile phones. Furthermore, the testing also showed that there is a tradeoff between visual graphics of the water droplets and the performance. Better visual graphics (for example through high resolution) results in lower performance and for high performance the visually of the
droplet needs to be reduced.
Advisors/Committee Members: Kamphuis, A.
Subjects/Keywords: Water droplet; marching cube algorithm; mobile phone; low resources; octree; droplet; following; interpolation; shape; unity
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Müllenmeister, C. C. (2012). Simulation of Water Droplets
using Metaballs on mobile phones. (Masters Thesis). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/255385
Chicago Manual of Style (16th Edition):
Müllenmeister, C C. “Simulation of Water Droplets
using Metaballs on mobile phones.” 2012. Masters Thesis, Universiteit Utrecht. Accessed March 07, 2021.
http://dspace.library.uu.nl:8080/handle/1874/255385.
MLA Handbook (7th Edition):
Müllenmeister, C C. “Simulation of Water Droplets
using Metaballs on mobile phones.” 2012. Web. 07 Mar 2021.
Vancouver:
Müllenmeister CC. Simulation of Water Droplets
using Metaballs on mobile phones. [Internet] [Masters thesis]. Universiteit Utrecht; 2012. [cited 2021 Mar 07].
Available from: http://dspace.library.uu.nl:8080/handle/1874/255385.
Council of Science Editors:
Müllenmeister CC. Simulation of Water Droplets
using Metaballs on mobile phones. [Masters Thesis]. Universiteit Utrecht; 2012. Available from: http://dspace.library.uu.nl:8080/handle/1874/255385
26.
Dupont, Erwan.
Méthode de mesure tridimensionnelle active appliquée au contexte de l’analyse endoscopique ou coloscopique : Three dimensional measurement method in the context of endoscopic or coloscopic analysis.
Degree: Docteur es, Mécanique Avancée, 2015, Compiègne
URL: http://www.theses.fr/2015COMP2198
► Cette thèse, consacrée à la mesure endoscopique de formes tridimensionnelle, se place dans un double contexte applicatif : tout d'abord industriel, avec l'inspection endoscopique de…
(more)
▼ Cette thèse, consacrée à la mesure endoscopique de formes tridimensionnelle, se place dans un double contexte applicatif : tout d'abord industriel, avec l'inspection endoscopique de pièces mécaniques en milieu contraint (notamment tubulaire) à des résolutions micrométriques. Le second contexte est médical avec la détection de formes tridimensionnelle lors de coloscopies pour l'aide au diagnostic. L'endoscopie souple est obtenue par l'utilisation de guides optiques, la méthode de mesure tridimensionnelle est basée sur la stéréovision active avec la génération de lumière structurée par une matrice de micro-miroirs. Après avoir établi l'état de l'art, une méthode de conception et d'évaluation optique appliquée à la stéréovision en endoscopie souple est décrite. C'est ensuite la réalisation instrumentale, son évaluation métrologique, et une méthode innovante de basculement de modes dynamique entre stéréovision active et passive qui sont détaillées. Des méthodes algorithmiques de reconstruction tridimensionnelle adaptées à ce type d'instrument sont enfin proposées. Les contributions scientifiques de cette étude sont multiples. Une méthode d'analyse optique basée sur l'utilisation de fonctions de transfert de modulation pour la conception d'un endoscope mesurant par stéréovision est proposée. Des méthodes de traitement d'image pour un étalonnage robuste malgré une défocalisation optique ainsi qu'un nouvel algorithme à décalage de phase constituent également des contributions de l'étude. L'association de ces méthodes a permis d'extraire un principe de réalisation permettant la mesure tridimensionnelle par endoscopie souple.
This thesis aims at developing a tri-dimensional measurement endoscopic device in a double context: the first one is industrial with endoscopic inspection of mechanical pieces (tubular inspection, for example) at micrometric resolution. The second context is medical with tri-dimensional shape detection during colonoscopy to help the surgeon diagnosis. In this study, flexible endoscopy is made possible by using image guides and the tri-dimensional reconstruction method is based on active stereovision where a digital micro-mirror device is used to spatially structure the incoming light. After developing the state of the art, an optical conception and evaluation method, applied to stereovision for flexible endoscopic devices is described. The instrumental realization is then detailed and metrologically evaluated. An innovative method that allows to switch dynamically between active and passive stereovision is then detailed. Finally, 3D reconstruction algorithms adapted to this endoscopic instrument are proposed. The scientific contributions of this study are multiple. Firstly, an optical analysis method based on the modulation transfer function to design an endoscopic stereovision system is proposed. An image processing method for robust calibration in a defocused optical environment and a new phase-shifting algorithm for 3D reconstruction are proposed. Finally, a realization principle for 3D measurement…
Advisors/Committee Members: Lamarque, Frédéric (thesis director), Redarce, Tanneguy (thesis director).
Subjects/Keywords: Reconstruction 3D; Endoscopie souple; Stéréovision active; Microscopie 3D; Coloscopie 3D; Algorithmes à décalage de phase; Guides d'images; Commutateurs optiques; Three-dimensional reconstruction; Endoscopy; 3-D television; Microscopy; Colonoscopy; Algorithms; Optics
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Dupont, E. (2015). Méthode de mesure tridimensionnelle active appliquée au contexte de l’analyse endoscopique ou coloscopique : Three dimensional measurement method in the context of endoscopic or coloscopic analysis. (Doctoral Dissertation). Compiègne. Retrieved from http://www.theses.fr/2015COMP2198
Chicago Manual of Style (16th Edition):
Dupont, Erwan. “Méthode de mesure tridimensionnelle active appliquée au contexte de l’analyse endoscopique ou coloscopique : Three dimensional measurement method in the context of endoscopic or coloscopic analysis.” 2015. Doctoral Dissertation, Compiègne. Accessed March 07, 2021.
http://www.theses.fr/2015COMP2198.
MLA Handbook (7th Edition):
Dupont, Erwan. “Méthode de mesure tridimensionnelle active appliquée au contexte de l’analyse endoscopique ou coloscopique : Three dimensional measurement method in the context of endoscopic or coloscopic analysis.” 2015. Web. 07 Mar 2021.
Vancouver:
Dupont E. Méthode de mesure tridimensionnelle active appliquée au contexte de l’analyse endoscopique ou coloscopique : Three dimensional measurement method in the context of endoscopic or coloscopic analysis. [Internet] [Doctoral dissertation]. Compiègne; 2015. [cited 2021 Mar 07].
Available from: http://www.theses.fr/2015COMP2198.
Council of Science Editors:
Dupont E. Méthode de mesure tridimensionnelle active appliquée au contexte de l’analyse endoscopique ou coloscopique : Three dimensional measurement method in the context of endoscopic or coloscopic analysis. [Doctoral Dissertation]. Compiègne; 2015. Available from: http://www.theses.fr/2015COMP2198
27.
Aboudourib, Abderrahmane.
Imagerie en champ proche de systèmes racinaires par radar à pénétration de sol : Near field imaging of tree root systems using ground penetrating radar.
Degree: Docteur es, Physique, 2020, université Paris-Saclay
URL: http://www.theses.fr/2020UPAST048
► La cartographie de systèmes racinaires dans des sols dispersifs et inhomogènes est mise en œuvre au moyen d’une technique non-destructive : le radar à pénétration…
(more)
▼ La cartographie de systèmes racinaires dans des sols dispersifs et inhomogènes est mise en œuvre au moyen d’une technique non-destructive : le radar à pénétration de sol (dit GPR). Ce travail est motivé par les besoins croissants en termes de contrôle de santé et de stabilité des arbres, ainsi que l’impact négatif des racines sur les infrastructures urbaines pouvant parfois compromettre la sécurité des personnes et des biens. Un état de l'art a permis de déterminer les facteurs limitant la détection et la résolution des racines ligneuses (diamètre > 0,5 cm) par GPR. Puis l'accent est mis sur une nouvelle procédure de traitement pour reconstruire les architectures 3-D des racines à partir de données GPR sans information a priori sur les sols impliqués. La viabilité de la méthode proposée est étudiée à partir de simulations numériques (via gprMax) pour des modèles de racines réalistes en environnements hétérogènes dispersifs; cela implique un nombre de configurations pour une variété de sols. Des mesures contrôlées en laboratoire sont conduites sur des prototypes de racines en utilisant un système bi-statique dans la gamme fréquentielle 300 MHz – 3,3 GHz. Ceci est étendu à des études terrain de systèmes racinaires d’arbres réels avec l'utilisation d'un GPR commercial (MALA). Les bonnes performances et la pertinence de l'approche proposée sont illustrées par de multiples exemples.
The mapping of tree root systems within inhomogeneous dispersive subsoils is investigated by means of a non-destructive technique: Ground-Penetrating Radar (GPR). This work is motivated by the growing need for tree health and stability control, as well as the negative impact of roots on urban infrastructure, which could seriously compromise the safety of people and properties. A state of the art has allowed us to determine the limiting factors of coarse root (diameter > 0.5 cm) detection and resolution by GPR. Then, the focus is put on a novel processing procedure to reconstruct 3-D root architectures from GPR data with no a priori information on the soils involved. Viability is studied from comprehensive numerical simulations (via gprMax) on realistic root models in 3-D heterogeneous dispersive environments; this in particular means a number of simulations involving a variety of soils. Controlled laboratory measurements are conducted on root prototypes using a bi-static GPR system operating at 300 MHz – 3.3 GHz frequency range. This is extended to field studies on real root systems with the use of a commercial GPR (MALA). The good performance and high potential of the proposed approach are illustrated accordingly.
Advisors/Committee Members: Serhir, Mohammed (thesis director).
Subjects/Keywords: Radar à pénétration de sol; Reconstruction 3-D; Traitement du signal et imagerie; Architecture racinaire; Expérimentation en laboratoire et terrain; Ground Penetrating Radar; 3-D reconstruction; Signal processing and imaging; Tree root architecture; Laboratory and field experimentation
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Aboudourib, A. (2020). Imagerie en champ proche de systèmes racinaires par radar à pénétration de sol : Near field imaging of tree root systems using ground penetrating radar. (Doctoral Dissertation). université Paris-Saclay. Retrieved from http://www.theses.fr/2020UPAST048
Chicago Manual of Style (16th Edition):
Aboudourib, Abderrahmane. “Imagerie en champ proche de systèmes racinaires par radar à pénétration de sol : Near field imaging of tree root systems using ground penetrating radar.” 2020. Doctoral Dissertation, université Paris-Saclay. Accessed March 07, 2021.
http://www.theses.fr/2020UPAST048.
MLA Handbook (7th Edition):
Aboudourib, Abderrahmane. “Imagerie en champ proche de systèmes racinaires par radar à pénétration de sol : Near field imaging of tree root systems using ground penetrating radar.” 2020. Web. 07 Mar 2021.
Vancouver:
Aboudourib A. Imagerie en champ proche de systèmes racinaires par radar à pénétration de sol : Near field imaging of tree root systems using ground penetrating radar. [Internet] [Doctoral dissertation]. université Paris-Saclay; 2020. [cited 2021 Mar 07].
Available from: http://www.theses.fr/2020UPAST048.
Council of Science Editors:
Aboudourib A. Imagerie en champ proche de systèmes racinaires par radar à pénétration de sol : Near field imaging of tree root systems using ground penetrating radar. [Doctoral Dissertation]. université Paris-Saclay; 2020. Available from: http://www.theses.fr/2020UPAST048
28.
Crispell, Daniel Elting.
A Continuous Probabilistic Scene Model for Aerial
Imagery.
Degree: PhD, Division of Engineering. Electrical Sciences and
Computer Engineering, 2009, Brown University
URL: https://repository.library.brown.edu/studio/item/bdr:238/
► Given a set of images of a scene, it is possible to estimate both the 3-d position of points in the scene and images from…
(more)
▼ Given a set of images of a scene, it is possible to
estimate both the
3-
d position of points in the scene and images
from viewpoints not present in the original data. These estimates
cannot in general be exact, however, due to uncertainties and
ambiguities present in the data. For this reason, probabilistic
scene models and
reconstruction algorithms are ideal due to their
inherent ability to represent such uncertainties and ambiguities.
Unfortunately, existing probabilistic
reconstruction algorithms do
not scale well to large and complex scenes, primarily due to their
dependence on large three-dimensional voxel arrays. The work
presented in this thesis generalizes previous probabilistic models
in such a way that multiple orders of magnitude savings in storage
are possible, making accurate
3-
d point localization and high
resolution novel view generation of large-scale outdoor scenes
possible. Specifically, the inherent dependence on a discrete array
of uniformly sized voxels is removed through the derivation of a
continuous probabilistic model which represents uncertain geometry
as a density field, allowing implementations to efficiently sample
the volume in a non-uniform fashion. In addition, multiple
reconstruction algorithms are presented to accommodate differing
modes of operation in which imagery may be captured and used. The
proposed model combined with the
reconstruction and novel view
generation algorithms comprise the first system capable of
automatically generating photo-realistic renderings of large and
complex scenes from arbitrary viewpoints based on aerial image data
alone.
Advisors/Committee Members: Taubin, Gabriel (director), Mundy, Joseph (reader), Kimia, Benjamin (reader).
Subjects/Keywords: 3-d modeling
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Crispell, D. E. (2009). A Continuous Probabilistic Scene Model for Aerial
Imagery. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:238/
Chicago Manual of Style (16th Edition):
Crispell, Daniel Elting. “A Continuous Probabilistic Scene Model for Aerial
Imagery.” 2009. Doctoral Dissertation, Brown University. Accessed March 07, 2021.
https://repository.library.brown.edu/studio/item/bdr:238/.
MLA Handbook (7th Edition):
Crispell, Daniel Elting. “A Continuous Probabilistic Scene Model for Aerial
Imagery.” 2009. Web. 07 Mar 2021.
Vancouver:
Crispell DE. A Continuous Probabilistic Scene Model for Aerial
Imagery. [Internet] [Doctoral dissertation]. Brown University; 2009. [cited 2021 Mar 07].
Available from: https://repository.library.brown.edu/studio/item/bdr:238/.
Council of Science Editors:
Crispell DE. A Continuous Probabilistic Scene Model for Aerial
Imagery. [Doctoral Dissertation]. Brown University; 2009. Available from: https://repository.library.brown.edu/studio/item/bdr:238/

Victoria University of Wellington
29.
Jongenelen, Adrian Peter Paul.
Development of a Compact,
Configurable, Real-Time Range
Imaging System.
Degree: 2011, Victoria University of Wellington
URL: http://hdl.handle.net/10063/1634
► This thesis documents the development of a time-of-flight (ToF) camera suitable for autonomous mobile robotics applications. By measuring the round trip time of emitted light…
(more)
▼ This thesis documents the development of a time-of-flight (ToF) camera suitable
for autonomous mobile robotics applications. By measuring the round trip time of
emitted light to and from objects in the scene, the system is capable of
simultaneous full-field range imaging. This is achieved by projecting amplitude
modulated continuous wave (AMCW) light onto the scene, and recording the
reflection using an image sensor array with a high-speed shutter amplitude
modulated at the same frequency (of the order of tens of MHz). The effect is to
encode the phase delay of the reflected light as a change in pixel intensity, which
is then interpreted as distance.
A full field range imaging system has been constructed based on the PMD
Technologies PMD19k image sensor, where the high-speed shuttering mechanism
is builtin to the integrated circuit. This produces a system that is considerably
more compact and power efficient than previous iterations that employed an
image intensifier to provide sensor modulation. The new system has comparable
performance to commercially available systems in terms of distance measurement
precision and accuracy, but is much more flexible with regards to its operating
parameters. All of the operating parameters, including the image integration time,
sensor modulation phase offset and modulation frequency can be changed in realtime
either manually or automatically through software.
This highly configurable system serves as an excellent platform for research into
novel range imaging techniques. One promising technique is the utilisation of
measurements using multiple modulation frequencies in order to maximise
precision over an extended operating range. Each measurement gives an
independent estimate of the distance with limited range depending on the
modulation frequency. These are combined to give a measurement with extended
maximum range using a novel algorithm based on the New Chinese Remainder
Theorem. A theoretical model for the measurement precision and accuracy of the
new algorithm is presented and verified with experimental results.
All distance image processing is performed on a per-pixel basis in real-time using
a Field Programmable Gate Array (FPGA). An efficient hardware
implementation of the phase determination algorithm for calculating distance is
investigated. The limiting resource for such an implementation is random access
memory (RAM), and a detailed analysis of the trade-off between this resource and
measurement precision is also presented.
Advisors/Committee Members: Dorrington, Adrian, Carnegie, Dale.
Subjects/Keywords: 3-D camera; Time-of-flight; Real-time
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Jongenelen, A. P. P. (2011). Development of a Compact,
Configurable, Real-Time Range
Imaging System. (Doctoral Dissertation). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/1634
Chicago Manual of Style (16th Edition):
Jongenelen, Adrian Peter Paul. “Development of a Compact,
Configurable, Real-Time Range
Imaging System.” 2011. Doctoral Dissertation, Victoria University of Wellington. Accessed March 07, 2021.
http://hdl.handle.net/10063/1634.
MLA Handbook (7th Edition):
Jongenelen, Adrian Peter Paul. “Development of a Compact,
Configurable, Real-Time Range
Imaging System.” 2011. Web. 07 Mar 2021.
Vancouver:
Jongenelen APP. Development of a Compact,
Configurable, Real-Time Range
Imaging System. [Internet] [Doctoral dissertation]. Victoria University of Wellington; 2011. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/10063/1634.
Council of Science Editors:
Jongenelen APP. Development of a Compact,
Configurable, Real-Time Range
Imaging System. [Doctoral Dissertation]. Victoria University of Wellington; 2011. Available from: http://hdl.handle.net/10063/1634

NSYSU
30.
Liu, Qiao-Yuan.
3D SHAPE RECONSTRUCTION USING PROJECTED FRINGE PROFILOMETRY FOR AN IMAGE BLURRED BY LINEAR MOTION.
Degree: Master, Electro-Optical Engineering, 2008, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0811108-153522
► A projected fringe profilometry (PFP) is an optical measurements technology which is widely used at present in gauging the object's three dimensional appearance. PFP is…
(more)
▼ A projected fringe profilometry (PFP) is an optical measurements technology which is widely used at present in gauging the object's three dimensional appearance. PFP is frequently used in detecting the quality of products in the industry due to the specialty of non-contact type, the short retrieve time and low environmental effect. As a result of the development for many years, PFP treats in the gauging static state of the object's three dimensional appearance has had the extremely fine gauging efficiency and the precision in , however in the dynamic inspected object in the gauging , not yet was still mature. If could to develop a set of gauging way in the dynamic inspected object , the application would be more widespread.
Taking PFP as the gauging principle, analyzing the changes between the dynamic treat measured object and the fringe. Using the simple mathematics to describe the interaction relations between the fringe and the inspected the object. Finally, reconstructed the inspected object' three dimensional appearance. May know biggest superiority by the experimental process, in the situation of without losing the information of fringe, PFP can reconstruct the inspected object' three dimensional appearance and do not need the motion condition information.
Advisors/Committee Members: Ann-Kuo Chu (chair), Chao-Kuei Lee (committee member), Yi-Jen Chiu (chair), Wei-Hung Su (committee member).
Subjects/Keywords: 3D shape reconstruction; projected fringe profilometry
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APA (6th Edition):
Liu, Q. (2008). 3D SHAPE RECONSTRUCTION USING PROJECTED FRINGE PROFILOMETRY FOR AN IMAGE BLURRED BY LINEAR MOTION. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0811108-153522
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Liu, Qiao-Yuan. “3D SHAPE RECONSTRUCTION USING PROJECTED FRINGE PROFILOMETRY FOR AN IMAGE BLURRED BY LINEAR MOTION.” 2008. Thesis, NSYSU. Accessed March 07, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0811108-153522.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Liu, Qiao-Yuan. “3D SHAPE RECONSTRUCTION USING PROJECTED FRINGE PROFILOMETRY FOR AN IMAGE BLURRED BY LINEAR MOTION.” 2008. Web. 07 Mar 2021.
Vancouver:
Liu Q. 3D SHAPE RECONSTRUCTION USING PROJECTED FRINGE PROFILOMETRY FOR AN IMAGE BLURRED BY LINEAR MOTION. [Internet] [Thesis]. NSYSU; 2008. [cited 2021 Mar 07].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0811108-153522.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Liu Q. 3D SHAPE RECONSTRUCTION USING PROJECTED FRINGE PROFILOMETRY FOR AN IMAGE BLURRED BY LINEAR MOTION. [Thesis]. NSYSU; 2008. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0811108-153522
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
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