subject:(back projection)

University of Connecticut

1. Zou, Xiyue. Embedded Sensing and Characterization of Pressure Distribution in Electrically Enhanced Micro-Rolling.

Degree: MS, Mechanical Engineering, 2015, University of Connecticut

URL: https://opencommons.uconn.edu/gs_theses/721

► In Micro-rolling process, metal sheet is imprinted with micron level textures by feeding into the gap between one smooth roll and one textured roll.… (more)

▼ In Micro-rolling process, metal sheet is imprinted with micron level textures by feeding into the gap between one smooth roll and one textured roll. To enhance the rollability of thin metal sheet and dimensional accuracy, high density current is sent through workpiece to soften the material by increasing temperature. This manufacturing process is called by Electrically-Assisted Micro-rolling (EAμR). EAμR, as a high efficiency and environment protection manufacturing process, can be used for production of key components in Micro-electromechanical Systems and bio-engineering. To control the quality of product, it is essential to monitor the pressure distribution in workpiece-roll interface during micro-rolling process. Comparing with process monitoring in conventional rolling process, sensing method in micro-rolling process monitoring not only demands to maintain surface integrity of roll surface, but also is limited by narrow space for sensors installation. Thus, a new sensing method based on embedded capacitance sensor array has been developed and prototyped for real-time monitoring in Electrically-Assisted Micro-rolling process. In the optimal structural design of embedded sensor, Finite element modeling is investigated to study the influence of sensor parameters and electrical current on sensor. To improve the spatial resolution of embedded sensor array mounted in a limited space, a new pressure reconstruction algorithm is presented to retrieve continuous spatial distribution of rolling pressure from a limited number of measured points. In this context, three research tasks has been identified and examined during the course of this thesis: 1) Design of a new embedded sensing method and its modeling The new sensing method monitors micro-rolling process by an embedded capacitance sensor array integrated into smooth roll of micro-rolling mill. The new embedded sensor using limited sensor installation space provides a new method to measure contact pressure between roller and workpiece without damaging the roller surface. It consists of a cylindrical plastic rod as the physical carrier of sensor array, a group of metal foils attached on cylindrical surface as receiving layer of capacitance array, and a thin plastic film as dielectric material of capacitance. The excitation layer of capacitance sensor is attached on inner surface of mounting hole in smooth roll. When the sensing rod is mounted into mounting hole, a series of capacitance is formed along axial direction of roll. In the design of mechatronics system, multi-physics modeling, based on finite element method, is developed not only to study the relationship between sensor parameters and the sensitivity of sensor, but to understand the thermal and electro-magnetic effect of electrical current passing through workpiece quantitatively as well. 2) Development of prototyping micro-rolling sensing system Micro-rolling sensing system is developed for real-time monitoring of Electrical-Assisted Micro-Rolling process. The whole… Advisors/Committee Members: Jiong Tang, Brice Cassenti, Robert X. Gao.

Subjects/Keywords: Sensor; Pressure Mapping; Back-projection

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Zou, X. (2015). Embedded Sensing and Characterization of Pressure Distribution in Electrically Enhanced Micro-Rolling. (Masters Thesis). University of Connecticut. Retrieved from https://opencommons.uconn.edu/gs_theses/721

Chicago Manual of Style (16^th Edition):

Zou, Xiyue. “Embedded Sensing and Characterization of Pressure Distribution in Electrically Enhanced Micro-Rolling.” 2015. Masters Thesis, University of Connecticut. Accessed January 19, 2021. https://opencommons.uconn.edu/gs_theses/721.

MLA Handbook (7^th Edition):

Zou, Xiyue. “Embedded Sensing and Characterization of Pressure Distribution in Electrically Enhanced Micro-Rolling.” 2015. Web. 19 Jan 2021.

Vancouver:

Zou X. Embedded Sensing and Characterization of Pressure Distribution in Electrically Enhanced Micro-Rolling. [Internet] [Masters thesis]. University of Connecticut; 2015. [cited 2021 Jan 19]. Available from: https://opencommons.uconn.edu/gs_theses/721.

Council of Science Editors:

Zou X. Embedded Sensing and Characterization of Pressure Distribution in Electrically Enhanced Micro-Rolling. [Masters Thesis]. University of Connecticut; 2015. Available from: https://opencommons.uconn.edu/gs_theses/721

University of Dayton

2. Aljohani, Mansour Abdullah M. A Technique for Magnetron Oscillator Based Inverse Synthetic Aperture Radar Image Formation.

Degree: PhD, Electrical and Computer Engineering, 2019, University of Dayton

URL: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1571665145862203

► Magnetron oscillator based marine radar technology is mature, affordable, reliable, and very effective for maritime safety applications. Commercial systems such as the Furuno DRS25A may… (more)

Subjects/Keywords: Electrical Engineering; Engineering; radar imaging; pseudo coherent; marine radar; filtered back projection; Algebraic reconstruction technique; time domain back projection; frequency domain back projection; ISAR; experiment

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APA (6^th Edition):

Aljohani, M. A. M. (2019). A Technique for Magnetron Oscillator Based Inverse Synthetic Aperture Radar Image Formation. (Doctoral Dissertation). University of Dayton. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=dayton1571665145862203

Chicago Manual of Style (16^th Edition):

Aljohani, Mansour Abdullah M. “A Technique for Magnetron Oscillator Based Inverse Synthetic Aperture Radar Image Formation.” 2019. Doctoral Dissertation, University of Dayton. Accessed January 19, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1571665145862203.

MLA Handbook (7^th Edition):

Aljohani, Mansour Abdullah M. “A Technique for Magnetron Oscillator Based Inverse Synthetic Aperture Radar Image Formation.” 2019. Web. 19 Jan 2021.

Vancouver:

Aljohani MAM. A Technique for Magnetron Oscillator Based Inverse Synthetic Aperture Radar Image Formation. [Internet] [Doctoral dissertation]. University of Dayton; 2019. [cited 2021 Jan 19]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1571665145862203.

Council of Science Editors:

Aljohani MAM. A Technique for Magnetron Oscillator Based Inverse Synthetic Aperture Radar Image Formation. [Doctoral Dissertation]. University of Dayton; 2019. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1571665145862203

University of Pretoria

3. [No author]. Comparison of filtered back projection and Osem in reducing bladder artifacts in pelvic spect imaging .

Degree: 2011, University of Pretoria

URL: http://upetd.up.ac.za/thesis/available/etd-07082011-151635/

► Bladder artifacts during bone single photon emission computed tomography (SPECT) is a common source of errors. The extent and severity of bladder artifacts have been… (more)

▼ Bladder artifacts during bone single photon emission computed tomography (SPECT) is a common source of errors. The extent and severity of bladder artifacts have been described for filtered back projection (FBP) reconstruction. OSEM may help to address this poor record of bladder artifacts, which render up to 20% of the images unreadable. Aims and objectives To evaluate the relationship of the bladder to acetabulum ratio in guiding the choice of the number of iterations and subsets used for OSEM reconstruction, for reducing bladder artifacts found on FBP reconstruction. Materials and Methods 105 patients with various indications for bone scans were selected and planar and SPECT images were acquired. The SPECT images were reconstructed with both filtered back projection and OSEM using four different combinations of iterations and subsets. The images were given to three well experienced Nuclear Physicians who were blinded to the diagnosis and type of reconstruction used. They then labelled images from the best to the worst after which the data was analysed. The bladder to acetabulum ratio for each image was determined which was then correlated with the different iterations and subsets used. Results The study demonstrated that reconstruction using OSEM led to better lesion detectability compared to filtered back projection in 87.62% of cases. It further demonstrated that the iterations and subsets used for reconstruction of an image correlates to the bladder to acetabulum ratio. Four iterations and 8 subsets yielded the best results in 48.5% of the images whilst two iterations and 8 subsets yielded the best results in 33.8%. The number of reconstructed images which yielded the best results with 2 iterations and 8 subsets were the same as or more than those with 4 iterations and 8 subsets when the bladder/acetabulum ratio was between 0.2-0.39. A ratio below 0.2 or above 0.39 supports the usage of 4 iterations and 8 subsets over 2 iterations and 8 subsets. Conclusion Bladder to acetabulum ratio can be used to select the optimum number of iterations and subsets for reconstruction of bone SPECT for accurate characterization of lesions. This study also confirms that reconstruction with OSEM (vs FBP) leads to better lesion detectability and characterisation. Advisors/Committee Members: Prof M M Sathekge (advisor).

Subjects/Keywords: Osem; Filtered back projection; Bladder artifacts; Pelvic; UCTD

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APA (6^th Edition):

author], [. (2011). Comparison of filtered back projection and Osem in reducing bladder artifacts in pelvic spect imaging . (Masters Thesis). University of Pretoria. Retrieved from http://upetd.up.ac.za/thesis/available/etd-07082011-151635/

Chicago Manual of Style (16^th Edition):

author], [No. “Comparison of filtered back projection and Osem in reducing bladder artifacts in pelvic spect imaging .” 2011. Masters Thesis, University of Pretoria. Accessed January 19, 2021. http://upetd.up.ac.za/thesis/available/etd-07082011-151635/.

MLA Handbook (7^th Edition):

author], [No. “Comparison of filtered back projection and Osem in reducing bladder artifacts in pelvic spect imaging .” 2011. Web. 19 Jan 2021.

Vancouver:

author] [. Comparison of filtered back projection and Osem in reducing bladder artifacts in pelvic spect imaging . [Internet] [Masters thesis]. University of Pretoria; 2011. [cited 2021 Jan 19]. Available from: http://upetd.up.ac.za/thesis/available/etd-07082011-151635/.

Council of Science Editors:

author] [. Comparison of filtered back projection and Osem in reducing bladder artifacts in pelvic spect imaging . [Masters Thesis]. University of Pretoria; 2011. Available from: http://upetd.up.ac.za/thesis/available/etd-07082011-151635/

University of Pretoria

4. Katua, Agatha Mary. Comparison of filtered back projection and Osem in reducing bladder artifacts in pelvic spect imaging.

Degree: Nuclear Medicine, 2011, University of Pretoria

URL: http://hdl.handle.net/2263/26128

► Bladder artifacts during bone single photon emission computed tomography (SPECT) is a common source of errors. The extent and severity of bladder artifacts have been… (more)

▼ Bladder artifacts during bone single photon emission computed tomography (SPECT) is a common source of errors. The extent and severity of bladder artifacts have been described for filtered back projection (FBP) reconstruction. OSEM may help to address this poor record of bladder artifacts, which render up to 20% of the images unreadable. Aims and objectives To evaluate the relationship of the bladder to acetabulum ratio in guiding the choice of the number of iterations and subsets used for OSEM reconstruction, for reducing bladder artifacts found on FBP reconstruction. Materials and Methods 105 patients with various indications for bone scans were selected and planar and SPECT images were acquired. The SPECT images were reconstructed with both filtered back projection and OSEM using four different combinations of iterations and subsets. The images were given to three well experienced Nuclear Physicians who were blinded to the diagnosis and type of reconstruction used. They then labelled images from the best to the worst after which the data was analysed. The bladder to acetabulum ratio for each image was determined which was then correlated with the different iterations and subsets used. Results The study demonstrated that reconstruction using OSEM led to better lesion detectability compared to filtered back projection in 87.62% of cases. It further demonstrated that the iterations and subsets used for reconstruction of an image correlates to the bladder to acetabulum ratio. Four iterations and 8 subsets yielded the best results in 48.5% of the images whilst two iterations and 8 subsets yielded the best results in 33.8%. The number of reconstructed images which yielded the best results with 2 iterations and 8 subsets were the same as or more than those with 4 iterations and 8 subsets when the bladder/acetabulum ratio was between 0.2-0.39. A ratio below 0.2 or above 0.39 supports the usage of 4 iterations and 8 subsets over 2 iterations and 8 subsets. Conclusion Bladder to acetabulum ratio can be used to select the optimum number of iterations and subsets for reconstruction of bone SPECT for accurate characterization of lesions. This study also confirms that reconstruction with OSEM (vs FBP) leads to better lesion detectability and characterisation. Advisors/Committee Members: Prof M M Sathekge (advisor).

Subjects/Keywords: Osem; Filtered back projection; Bladder artifacts; Pelvic; UCTD

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Katua, A. M. (2011). Comparison of filtered back projection and Osem in reducing bladder artifacts in pelvic spect imaging. (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/26128

Chicago Manual of Style (16^th Edition):

Katua, Agatha Mary. “Comparison of filtered back projection and Osem in reducing bladder artifacts in pelvic spect imaging.” 2011. Masters Thesis, University of Pretoria. Accessed January 19, 2021. http://hdl.handle.net/2263/26128.

MLA Handbook (7^th Edition):

Katua, Agatha Mary. “Comparison of filtered back projection and Osem in reducing bladder artifacts in pelvic spect imaging.” 2011. Web. 19 Jan 2021.

Vancouver:

Katua AM. Comparison of filtered back projection and Osem in reducing bladder artifacts in pelvic spect imaging. [Internet] [Masters thesis]. University of Pretoria; 2011. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/2263/26128.

Council of Science Editors:

Katua AM. Comparison of filtered back projection and Osem in reducing bladder artifacts in pelvic spect imaging. [Masters Thesis]. University of Pretoria; 2011. Available from: http://hdl.handle.net/2263/26128

Linköping University

5. Dahlström, Erik. Super-Resolution Using Dynamic Cameras.

Degree: Computer Vision, 2020, Linköping University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-167333

► In digital image correlation, an optical full-ﬁeld analysis method that can determine displacements of an object under load, high-resolution images are preferable. One way… (more)

Subjects/Keywords: Super-resolution; iterative back-projection; digital signal processing; Signal Processing; Signalbehandling

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APA (6^th Edition):

Dahlström, E. (2020). Super-Resolution Using Dynamic Cameras. (Thesis). Linköping University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-167333

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Dahlström, Erik. “Super-Resolution Using Dynamic Cameras.” 2020. Thesis, Linköping University. Accessed January 19, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-167333.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Dahlström, Erik. “Super-Resolution Using Dynamic Cameras.” 2020. Web. 19 Jan 2021.

Vancouver:

Dahlström E. Super-Resolution Using Dynamic Cameras. [Internet] [Thesis]. Linköping University; 2020. [cited 2021 Jan 19]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-167333.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Dahlström E. Super-Resolution Using Dynamic Cameras. [Thesis]. Linköping University; 2020. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-167333

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of California – Riverside

6. Li, Bo. A Broad Spectrum of Fault Behaviors in Fast and Slow Earthquakes.

Degree: Geological Sciences, 2019, University of California – Riverside

URL: http://www.escholarship.org/uc/item/4149s6nr

► Faults show complex slip behaviors at different sections depending mainly on their stress and friction distributions. In the seismogenic zone, a fast earthquake happens when… (more)

▼ Faults show complex slip behaviors at different sections depending mainly on their stress and friction distributions. In the seismogenic zone, a fast earthquake happens when the frictional resistance to fault movement reduces faster than the decrease in elastic stress due to fault slip, and it releases seismic energy that causes ground shaking. Increases in depth, temperature and pressure change the frictional properties from velocity weakening to strengthening. This deeper section is referred to as the creeping zone and shows stable sliding without any stress drop. In between, there is a transition zone where slow slip can occur on asperities embedded in the creeping region [Bartlow et al, 2011; Obara et al., 2011; Ghosh et al., 2012]. The slip cannot reach high enough velocities to produce regular earthquakes, but sometimes it is still able to radiate low amplitude and low frequency seismic waves [Peng & Gomberg, 2010]. Seismicity in the seismogenic zone can trigger slow slip in the transition zone. It can also change the stress and accelerate or decelerate the seismicity on adjacent faults or even on faults hundreds to thousands kilometers away when the earthquake is large enough. Conversely, slow slip in the transition zone can also change the surrounding stress field and increase the stress in the up-dip seismogenic zone, potentially advancing the timing of earthquake failure. In this dissertation, I study the broad spectrum of fault behaviors and explore the potential relationships between them. In Chapter 1, we give an introduction to fast and slow earthquakes and briefly introduce the main methods used to study them. In Chapter 2, I apply the back-projection method to two case studies: the 2015 Mw 8.3 Illapel earthquake, using one array with both low- and high-frequency bands imaging multiple rupture patches, and the 2015 Mw 7.8 Gorkha earthquake using multiple global arrays to image the rupture process and detect aftershocks. The back-projection results of the Gorkha earthquake imaged by different global arrays show similar rupture processes but vary in detail. One array shows continuous eastward rupture for ~60s while other arrays show a branching rupture to the northeast at ~45s. In addition, we combine multiple global arrays to improve the resolution of the back-projection method. The higher resolution also allows us to detect 2.6 times the number of aftershocks than that recorded in the global catalog. In Chapter 3, we apply the multi beam back-projection method (MBBP) to study the slow earthquakes of the Unalaska-Akutan region in the Alaska-Aleutian subduction zone. We detect near-continuous tremor and low frequency earthquakes for nearly two years. The slow earthquakes are distributed heterogeneously in three clusters and are located deeper than those in other subduction zones. The tremors show both short and long-term migrations along strike and dip directions with a wide range of velocities. In addition, tremors and LFEs show strong spatio-temporal correlations. They are located in the same patches,…

Subjects/Keywords: Geophysics; back-projection; dynamic triggering; earthquake rupture; slow earthquakes

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Li, B. (2019). A Broad Spectrum of Fault Behaviors in Fast and Slow Earthquakes. (Thesis). University of California – Riverside. Retrieved from http://www.escholarship.org/uc/item/4149s6nr

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Li, Bo. “A Broad Spectrum of Fault Behaviors in Fast and Slow Earthquakes.” 2019. Thesis, University of California – Riverside. Accessed January 19, 2021. http://www.escholarship.org/uc/item/4149s6nr.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Li, Bo. “A Broad Spectrum of Fault Behaviors in Fast and Slow Earthquakes.” 2019. Web. 19 Jan 2021.

Vancouver:

Li B. A Broad Spectrum of Fault Behaviors in Fast and Slow Earthquakes. [Internet] [Thesis]. University of California – Riverside; 2019. [cited 2021 Jan 19]. Available from: http://www.escholarship.org/uc/item/4149s6nr.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Li B. A Broad Spectrum of Fault Behaviors in Fast and Slow Earthquakes. [Thesis]. University of California – Riverside; 2019. Available from: http://www.escholarship.org/uc/item/4149s6nr

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

7. Hartman, Andreas. An Evaluation of Interpolation and Oversampling Effects on Image Quality in Synthetic Aperture Radar Processing with Global Back-projection.

Degree: 2014, , Department of Applied Signal Processing

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5258

► For time domain SAR processing algorithms, such as Global Back-projection, interpolation becomes a part of the implementation. In order for the interpolation to yield… (more)

Subjects/Keywords: Synthetic Aperture Radar; Global Back-projection; Image Quality; Side Lobe Suppression

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APA (6^th Edition):

Hartman, A. (2014). An Evaluation of Interpolation and Oversampling Effects on Image Quality in Synthetic Aperture Radar Processing with Global Back-projection. (Thesis). , Department of Applied Signal Processing. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5258

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hartman, Andreas. “An Evaluation of Interpolation and Oversampling Effects on Image Quality in Synthetic Aperture Radar Processing with Global Back-projection.” 2014. Thesis, , Department of Applied Signal Processing. Accessed January 19, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5258.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hartman, Andreas. “An Evaluation of Interpolation and Oversampling Effects on Image Quality in Synthetic Aperture Radar Processing with Global Back-projection.” 2014. Web. 19 Jan 2021.

Vancouver:

Hartman A. An Evaluation of Interpolation and Oversampling Effects on Image Quality in Synthetic Aperture Radar Processing with Global Back-projection. [Internet] [Thesis]. , Department of Applied Signal Processing; 2014. [cited 2021 Jan 19]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5258.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hartman A. An Evaluation of Interpolation and Oversampling Effects on Image Quality in Synthetic Aperture Radar Processing with Global Back-projection. [Thesis]. , Department of Applied Signal Processing; 2014. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5258

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Oklahoma

8. Dower, William. Advances in Synthetic Aperture Radar from a Wavenumber Perspective.

Degree: PhD, 2017, University of Oklahoma

URL: http://hdl.handle.net/11244/52722

► This dissertation examines the wavenumber domain of Synthetic Aperture Radar (SAR) images. This domain is the inverse Fourier transform domain of a SAR image. The… (more)

Subjects/Keywords: synthetic aperture radar; image resolution; back projection; bistatic radar

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Dower, W. (2017). Advances in Synthetic Aperture Radar from a Wavenumber Perspective. (Doctoral Dissertation). University of Oklahoma. Retrieved from http://hdl.handle.net/11244/52722

Chicago Manual of Style (16^th Edition):

Dower, William. “Advances in Synthetic Aperture Radar from a Wavenumber Perspective.” 2017. Doctoral Dissertation, University of Oklahoma. Accessed January 19, 2021. http://hdl.handle.net/11244/52722.

MLA Handbook (7^th Edition):

Dower, William. “Advances in Synthetic Aperture Radar from a Wavenumber Perspective.” 2017. Web. 19 Jan 2021.

Vancouver:

Dower W. Advances in Synthetic Aperture Radar from a Wavenumber Perspective. [Internet] [Doctoral dissertation]. University of Oklahoma; 2017. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/11244/52722.

Council of Science Editors:

Dower W. Advances in Synthetic Aperture Radar from a Wavenumber Perspective. [Doctoral Dissertation]. University of Oklahoma; 2017. Available from: http://hdl.handle.net/11244/52722

NSYSU

9. Hung, Chi-Ying. The Study of Super-Resolution Image Reconstruction from Multiple Remote Sensing Images.

Degree: Master, Marine Environment and Engineering, 2013, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0809113-100345

► Remote sensing images in the shooting process, affected by weather, cameralensquality , pixel displacement caused by flying, ambient environmental factors make it difficult to maintain… (more)

▼ Remote sensing images in the shooting process, affected by weather, cameralensquality , pixel displacement caused by flying, ambient environmental factors make it difficult to maintain the complete observation messages of image , causing the images have deviation or distortion, resulting in reduced image quality. Super-resolution reconstruction technology can break the image acquisition devices restrictionsand environmental restrictions , the basic concept of Super- resolution reconstruction technology is using the multiple images which have blur and noise ,making use of the characteristics of the image and combined with priori- information for data fusion to get the high-resolution images. Super-resolution image reconstruction algorithm is divided into "single-image super-resolution reconstruction" and "multiple images super-resolution reconstruction": single image super-resolution reconstruction is use of low-resolution images toreconstruct a high-resolution images ; while multiple images super-resolution reconstruction is use of multiple low-resolution images which in the same scene, and the images have geometric deformation , making use of the characteristics of the image and combined with priori- information for data fusion to get the high-resolution images. This study uses projection onto convex sets method (POCS) ,iterative back projection(IBP) and bicubic interpolation to process the image for four different conditions, in addition to use the Super-resolution image reconstruction algorithm to enhannce the quality of image , but also hope that through the different results to compare the difference between single-image processing and multiple-images processing. In the End , use the Standard Deviation to detect the geometric accuracy of image ,to explore the relationship between definition and the geometric accuracy. Advisors/Committee Members: Shiahn-Wern Shyue (committee member), Liang-Hwei Lee (committee member), Tian-Yuan Shih (chair), Chia-Sheng Hsieh (chair).

Subjects/Keywords: Projection onto convex sets (POCS); Multiple images super-resolution reconstruction; Remote sensing images; Iterative back projection (IBP); Super-resolution reconstruction technology

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hung, C. (2013). The Study of Super-Resolution Image Reconstruction from Multiple Remote Sensing Images. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0809113-100345

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hung, Chi-Ying. “The Study of Super-Resolution Image Reconstruction from Multiple Remote Sensing Images.” 2013. Thesis, NSYSU. Accessed January 19, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0809113-100345.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hung, Chi-Ying. “The Study of Super-Resolution Image Reconstruction from Multiple Remote Sensing Images.” 2013. Web. 19 Jan 2021.

Vancouver:

Hung C. The Study of Super-Resolution Image Reconstruction from Multiple Remote Sensing Images. [Internet] [Thesis]. NSYSU; 2013. [cited 2021 Jan 19]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0809113-100345.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hung C. The Study of Super-Resolution Image Reconstruction from Multiple Remote Sensing Images. [Thesis]. NSYSU; 2013. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0809113-100345

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

10. Fan, Wenyuan. Kinematic earthquake source imaging: theory and applications.

Degree: Earth Sciences, 2017, University of California – San Diego

URL: http://www.escholarship.org/uc/item/50q9p5ps

► Earthquakes are the primary source of seismic waves in seismology and understanding the earthquake source is essential for predicting ground motions and detailing the physics… (more)

▼ Earthquakes are the primary source of seismic waves in seismology and understanding the earthquake source is essential for predicting ground motions and detailing the physics of rupture. Earthquake kinematic source imaging describes the whole rupture process during an earthquake. It does not directly require the resolved source model to be physically or dynamically plausible, but can help in understanding the conditions of rupture dynamics. Therefore, accurate earthquake source models are highly desirable.In Chapter 2, we develop a frequency-based approach to earthquake slip inversion that requires no prior information on the rupture velocity or slip-rate functions. In Chapter 3, we characterize the rupture process of the 25 April 2015 Nepal earthquake with globally recorded teleseismic P waves. In Chapter 4, we investigate the 10 January 2012 Mw 7.2 Sumatra earthquake in the Wharton basin and detect dynamically-triggered large early aftershocks occurring on or near the subduction interface. In Chapter 5, we constrain the spatiotemporal evolution of the 2009 Tonga-Samoa earthquake with global P-wave back-projection and a multiple moment-tensor inversion. Our results show that the rupture branches east of the trench axis were controlled by the geometry of bending-related faults on the Pacific plate, and that the rupture branch west of the trench axis may correlate with along-strike fore-arc segmentation.In Chapter 6, we detect and locate 48 previously unidentified large early aftershocks triggered by 7 < M < 8 earthquakes within a few fault lengths, during times that high-amplitude surface waves arrive from the mainshock. The observations indicate that near-to-intermediate-field dynamic triggering commonly exists and fundamentally promotes aftershock occurrence.In Chapter 7, we analyze the 2006 Mw 7.8 Java tsunami earthquake with global P-wave back-projection, tsunami tide-gauge back-propagation, and P-wave source spectra modeling. The results suggest that the splay faults may have been reactivated during the Java earthquake.In Chapter 8, we explore back-projection resolution by imaging M6 earthquakes within the Japan subduction zone. The quantitative analysis of uncertainties can provide guidelines for interpreting back-projection results in the region. Finally, in Chapter 9, we discuss future research prospects of kinematic earthquake source imaging.

Subjects/Keywords: Geophysics; Back-projection; Dynamic triggering; Finite-fault slip inversion; Subduction zone; Tsunami; Uncertainty analysis

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APA (6^th Edition):

Fan, W. (2017). Kinematic earthquake source imaging: theory and applications. (Thesis). University of California – San Diego. Retrieved from http://www.escholarship.org/uc/item/50q9p5ps

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Fan, Wenyuan. “Kinematic earthquake source imaging: theory and applications.” 2017. Thesis, University of California – San Diego. Accessed January 19, 2021. http://www.escholarship.org/uc/item/50q9p5ps.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Fan, Wenyuan. “Kinematic earthquake source imaging: theory and applications.” 2017. Web. 19 Jan 2021.

Vancouver:

Fan W. Kinematic earthquake source imaging: theory and applications. [Internet] [Thesis]. University of California – San Diego; 2017. [cited 2021 Jan 19]. Available from: http://www.escholarship.org/uc/item/50q9p5ps.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Fan W. Kinematic earthquake source imaging: theory and applications. [Thesis]. University of California – San Diego; 2017. Available from: http://www.escholarship.org/uc/item/50q9p5ps

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Halmstad University

11. Hast, Andreas. Fast Factorized Back-Pro jection in an FPGA.

Degree: Computer and Electrical Engineering (IDE), 2006, Halmstad University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-280

► The Fast Factorized Back Pro jection (FFBP) algorithm is a computationally efficient algorithm for image formation in a Very High Frequency Synthetic Aperture Radar… (more)

Subjects/Keywords: Fast Factorized Back Projection; FFBP; Algorithms

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APA (6^th Edition):

Hast, A. (2006). Fast Factorized Back-Pro jection in an FPGA. (Thesis). Halmstad University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-280

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hast, Andreas. “Fast Factorized Back-Pro jection in an FPGA.” 2006. Thesis, Halmstad University. Accessed January 19, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-280.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hast, Andreas. “Fast Factorized Back-Pro jection in an FPGA.” 2006. Web. 19 Jan 2021.

Vancouver:

Hast A. Fast Factorized Back-Pro jection in an FPGA. [Internet] [Thesis]. Halmstad University; 2006. [cited 2021 Jan 19]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-280.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hast A. Fast Factorized Back-Pro jection in an FPGA. [Thesis]. Halmstad University; 2006. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-280

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Victoria

12. Tan, Fengzhou. Improving beamforming-based methodologies for seismological analysis.

Degree: School of Earth and Ocean Sciences, 2019, University of Victoria

URL: http://hdl.handle.net/1828/10705

► We improved two beamforming-based methodologies for seismological analysis. The first one is a new Three-Dimensional Phase-Weighted Relative Back Projection (3-D PWBP) method to improve the… (more)

▼ We improved two beamforming-based methodologies for seismological analysis. The first one is a new Three-Dimensional Phase-Weighted Relative Back Projection (3-D PWBP) method to improve the spatial resolution of Back Projection results. We exploit both phase and amplitude of the seismogram signal to enhance the distinction of correlated signals. Also, we implement a 3-D velocity model to provide more accurate travel times. We vindicate these refinements with several synthetic tests and an analysis of the 1997 Mw 7.2 Zirkuh (Iran) earthquake, which we show ruptured mainly unilaterally southwards at a rupture speed of ∼3.0 km/s along its ∼125 km- long, mostly single-stranded surface rupture. Then, we apply the new method to the more complex case of the 2016 Mw 7.8 Kaikoura (New Zealand) earthquake, which we demonstrate is divided into two major stages separated by a gap of ∼8 s and ∼30–40 km. The overall rupture speed is ∼1.7 km/s and the overall duration is ∼84 s, considerably shorter than some earlier estimates. We see no clear evidence for continuous failure of the subduction interface that underlies the known, surface-rupturing crustal faults, though we cannot rule out its involvement in the second major stage in the northern part of the rupture area. The late (∼80 s) peak in relative energy is likely a high-frequency stopping phase, and the rupture appears to terminate southwest of the offshore Needles fault. The second methodology is a novel workflow for earthquake detection and location, named Seismicity-Scanning based on Navigated Automatic Phase-picking (S-SNAP). By taking a cocktail approach that combines Source-Scanning, Kurtosis-based Phase-picking and the Maximum Intersection location technique into a single integrated workflow, this new method is capable of delineating complex spatiotemporal distributions of seismicity. It is automatic, efficiently providing earthquake locations with high comprehensiveness and accuracy. We apply S-SNAP to a dataset recorded by a dense local seismic array during a hydraulic fracturing operation to test this novel approach and to demonstrate the effectiveness of S-SNAP in comparison to existing methods. Overall, S-SNAP found nearly four times as many high-quality events as a template-matching based catalogue. All events in the previous catalogue are identi- fied with similar epicenter, depth and magnitude, while no false detections are found by visual inspection. Advisors/Committee Members: Nissen, Edwin (supervisor), Kao, Honn (supervisor).

Subjects/Keywords: Seismology; Source scanning; Three-Dimensional Phase-Weighted Relative Back Projection (3- D PWBP)

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APA (6^th Edition):

Tan, F. (2019). Improving beamforming-based methodologies for seismological analysis. (Masters Thesis). University of Victoria. Retrieved from http://hdl.handle.net/1828/10705

Chicago Manual of Style (16^th Edition):

Tan, Fengzhou. “Improving beamforming-based methodologies for seismological analysis.” 2019. Masters Thesis, University of Victoria. Accessed January 19, 2021. http://hdl.handle.net/1828/10705.

MLA Handbook (7^th Edition):

Tan, Fengzhou. “Improving beamforming-based methodologies for seismological analysis.” 2019. Web. 19 Jan 2021.

Vancouver:

Tan F. Improving beamforming-based methodologies for seismological analysis. [Internet] [Masters thesis]. University of Victoria; 2019. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/1828/10705.

Council of Science Editors:

Tan F. Improving beamforming-based methodologies for seismological analysis. [Masters Thesis]. University of Victoria; 2019. Available from: http://hdl.handle.net/1828/10705

University of Minnesota

13. Wang, Nu. Two projects: Improved prediction of metabolite retetion times and analysis of ammonium transporters from Marchantia polymorpha.

Degree: PhD, Biological Science, 2018, University of Minnesota

URL: http://hdl.handle.net/11299/201074

► Gradient retention times are difficult to project from the underlying retention factor (k) vs. solvent composition (φ) relationships. A major reason for this difficulty is… (more)

▼ Gradient retention times are difficult to project from the underlying retention factor (k) vs. solvent composition (φ) relationships. A major reason for this difficulty is that gradients produced by HPLC pumps are imperfect – gradient delay, gradient dispersion, and solvent mis-proportioning are all difficult to account for in calculations. However, we recently showed that a gradient “back-calculation” methodology, Retention Projection with Back-calculation (RPwB), can measure these imperfections and take them into account. In RPLC (Reverse Phase Liquid Chromatography), when the back-calculation methodology was used, error in projected gradient retention times is as low as could be expected based on repeatability in the k vs. φ relationships. To extend the application of RPwB, we test the prediction accuracy in HILIC (Hydrophilic Interaction Liquid Chromatography) too. Compared with RPLC, HILIC presents a new challenge: the selectivity of HILIC columns drift strongly over time. Retention is repeatable in short time, but selectivity frequently drifts over the course of weeks. In this study, we set out to understand if the issue of selectivity drift can be avoided by doing our experiments quickly, and if there are any other factors that make it difficult to predict gradient retention times from isocratic k vs. φ relationships when gradient imperfections are taken into account with the back-calculation methodology. While in past reports, the accuracy of retention projections was >5%, the back-calculation methodology brought our error down to ~1%. This result was 6-43 times more accurate than projections made using ideal gradients and 3-5 times more accurate than the same retention projections made using offset gradients (i.e., gradients that only took gradient delay into account). Still, the error remained higher in our HILIC projections than in RPLC. Based on the shape of the back-calculated gradients, we suspect the higher error is a result of prominent gradient distortion caused by strong, preferential water uptake from the mobile phase into the stationary phase during the gradient – a factor our model did not properly take into account. It appears that, at least with the stationary phase we used, column distortion is an important factor to take into account in retention projection in HILIC that is not usually important in RPLC. However, this methodology has only been approved its robustness in preferred sample (solvents 73% acetonitrile and 27% water) in RPLC. Biological samples are often complicated and sample solvents vary. In this study, we set out to explore the sensitivity of RPwB under a limited set of extreme conditions. First, we selected nine sample solvents representing a wide range of polarities (methanol, ethanol, isopropanol, acetonitrile, acetone, dichloromethane, ethyl acetate, tetrahydrofuran, and toluene), and studied their effects on peak shapes, retention times, and prediction accuracy of RPwB. We found isopropanol, acetonitrile, and ethyl acetate were the top three that distorted peak shapes the…

Subjects/Keywords: Ammonium Transporters; HILIC; Marchantia polymorpha; Metabolite identification; Protein phosphorylation; Retention Projection with Back-calculation (RPwB)

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APA (6^th Edition):

Wang, N. (2018). Two projects: Improved prediction of metabolite retetion times and analysis of ammonium transporters from Marchantia polymorpha. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/201074

Chicago Manual of Style (16^th Edition):

Wang, Nu. “Two projects: Improved prediction of metabolite retetion times and analysis of ammonium transporters from Marchantia polymorpha.” 2018. Doctoral Dissertation, University of Minnesota. Accessed January 19, 2021. http://hdl.handle.net/11299/201074.

MLA Handbook (7^th Edition):

Wang, Nu. “Two projects: Improved prediction of metabolite retetion times and analysis of ammonium transporters from Marchantia polymorpha.” 2018. Web. 19 Jan 2021.

Vancouver:

Wang N. Two projects: Improved prediction of metabolite retetion times and analysis of ammonium transporters from Marchantia polymorpha. [Internet] [Doctoral dissertation]. University of Minnesota; 2018. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/11299/201074.

Council of Science Editors:

Wang N. Two projects: Improved prediction of metabolite retetion times and analysis of ammonium transporters from Marchantia polymorpha. [Doctoral Dissertation]. University of Minnesota; 2018. Available from: http://hdl.handle.net/11299/201074

IUPUI

14. Hassan, Salah E. Soot mass estimation from electrical capacitance tomography imaging for a diesel particulate filter.

Degree: 2020, IUPUI

URL: http://hdl.handle.net/1805/22344

►

Indiana University-Purdue University Indianapolis (IUPUI)

The Electrical capacitance tomography (ECT) method has recently been adapted to obtain tomographic images of the cross section of a… (more)

Subjects/Keywords: Particulate Matter; Soot Estimating; Electrical Capacitance Tomography; Linear Back projection; Diesel Particulate Filter; ANSYS Electronic

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APA (6^th Edition):

Hassan, S. E. (2020). Soot mass estimation from electrical capacitance tomography imaging for a diesel particulate filter. (Thesis). IUPUI. Retrieved from http://hdl.handle.net/1805/22344

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hassan, Salah E. “Soot mass estimation from electrical capacitance tomography imaging for a diesel particulate filter.” 2020. Thesis, IUPUI. Accessed January 19, 2021. http://hdl.handle.net/1805/22344.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hassan, Salah E. “Soot mass estimation from electrical capacitance tomography imaging for a diesel particulate filter.” 2020. Web. 19 Jan 2021.

Vancouver:

Hassan SE. Soot mass estimation from electrical capacitance tomography imaging for a diesel particulate filter. [Internet] [Thesis]. IUPUI; 2020. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/1805/22344.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hassan SE. Soot mass estimation from electrical capacitance tomography imaging for a diesel particulate filter. [Thesis]. IUPUI; 2020. Available from: http://hdl.handle.net/1805/22344

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Brno University of Technology

15. Novotný, Lukáš. Kvantitativní hodnocení kvality CT RTG zobrazení: CT X-ray quantitative evaluation.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/12050

► X-Ray Computed Tomography is irreplaceable medical imaging system. Quantitative evaluation is day to day routine used for clean run of this imaging system. The master’s… (more)

Subjects/Keywords: Rentgenová výpočetní tomografie; CT RTG ZS; kvantitativní hodnocení; prostá zpětná projekce; filtrovaná zpětná projekce; paralelní projekce; vějířová projekce; fantom; X-Ray Computed Tomography; CT X-Ray; Quantitative Evaluation; Plain Back-Projection; Filtered Back-Projection; Parallel Projection; Pan Projection; Phantom

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APA (6^th Edition):

Novotný, L. (2019). Kvantitativní hodnocení kvality CT RTG zobrazení: CT X-ray quantitative evaluation. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/12050

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Novotný, Lukáš. “Kvantitativní hodnocení kvality CT RTG zobrazení: CT X-ray quantitative evaluation.” 2019. Thesis, Brno University of Technology. Accessed January 19, 2021. http://hdl.handle.net/11012/12050.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Novotný, Lukáš. “Kvantitativní hodnocení kvality CT RTG zobrazení: CT X-ray quantitative evaluation.” 2019. Web. 19 Jan 2021.

Vancouver:

Novotný L. Kvantitativní hodnocení kvality CT RTG zobrazení: CT X-ray quantitative evaluation. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/11012/12050.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Novotný L. Kvantitativní hodnocení kvality CT RTG zobrazení: CT X-ray quantitative evaluation. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/12050

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Michigan

16. Long, Yong. Statistical Image Reconstruction and Motion Estimation for Image-Guided Radiotherapy.

Degree: PhD, Electrical Engineering: Systems, 2011, University of Michigan

URL: http://hdl.handle.net/2027.42/86254

► Image reconstruction and motion estimation are very important for image-guided radiotherapy (IGRT). Three-dimensional reconstruction of patient anatomy using X-ray computed tomography (CT) allows identification of… (more)

▼ Image reconstruction and motion estimation are very important for image-guided radiotherapy (IGRT). Three-dimensional reconstruction of patient anatomy using X-ray computed tomography (CT) allows identification of the location of a tumor prior to treatment. The locations of tumorsmay change during actual treatment due to movement such as respiratory motion. Motion estimation helps optimize the accuracy and precision of radiotherapy so that more of the normal surrounding tissue can be spared. This dissertation addresses several important issues related to these two core components of IGRT. Firstly, we developed two new separable footprint (SF) projector methods for X-ray conebeam CT. The SF projectors approximate the voxel footprint functions as 2D separable functions. The SF-TR projector uses trapezoid functions in the transaxial direction and rectangular functions in the axial direction, whereas the SF-TT projector uses trapezoid functions in both directions. Both SF projector methods are more accurate than the distance-driven (DD) projector, which is a current state-of-the-art method in the field. The SF-TT projector is more accurate than the SF-TR projector for rays associated with large cone angles. In addition, the SF-TR projector has similar computation speed with the DD projector and the SF-TT projector is about two times slower. Secondly, we proposed a statistical penalized weighted least-squares (PWLS) method with edge-preserving regularization to reconstruct two basis materials from a single-energy CT scan acquired with differential filtration, such as a split filter or a bow-tie filter. It requires only the use of suitable filters between the X-ray tube and the patient. For both filtration methods, the proposed PWLS method reconstructed soft tissue and bone images with lower RMS errors, reduced the beam-hardening artifacts much more effectively and produced lower noise, as compared with the traditional non-iterative Joseph and Spital method. Thirdly, we conducted an objective characterization of the influence of rotational arc length on accuracy of motion estimation for projection-to-volume targeting during rotational therapy. Simulations illustrate the potential accuracy of limited-angle projection-to-volume alignment. Registration accuracy can be sensitive to angular center, tends to be lower along direction of the projection set, and tends to decrease away from the rotation center. Advisors/Committee Members: Balter, James M. (committee member), Fessler, Jeffrey A. (committee member), Clinthorne, Neal H. (committee member), Hero Iii, Alfred O. (committee member), Meyer, Charles R. (committee member).

Subjects/Keywords: X-Ray CT; Statistical Image Reconstruction; Image-Guided Radiotherapy; Image Registration; Forward and Back-projection; Dual-Energy CT; Electrical Engineering; Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Long, Y. (2011). Statistical Image Reconstruction and Motion Estimation for Image-Guided Radiotherapy. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/86254

Chicago Manual of Style (16^th Edition):

Long, Yong. “Statistical Image Reconstruction and Motion Estimation for Image-Guided Radiotherapy.” 2011. Doctoral Dissertation, University of Michigan. Accessed January 19, 2021. http://hdl.handle.net/2027.42/86254.

MLA Handbook (7^th Edition):

Long, Yong. “Statistical Image Reconstruction and Motion Estimation for Image-Guided Radiotherapy.” 2011. Web. 19 Jan 2021.

Vancouver:

Long Y. Statistical Image Reconstruction and Motion Estimation for Image-Guided Radiotherapy. [Internet] [Doctoral dissertation]. University of Michigan; 2011. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/2027.42/86254.

Council of Science Editors:

Long Y. Statistical Image Reconstruction and Motion Estimation for Image-Guided Radiotherapy. [Doctoral Dissertation]. University of Michigan; 2011. Available from: http://hdl.handle.net/2027.42/86254

University of Vermont

17. Zhang, Yu. Investigating Key Techniques to Leverage the Functionality of Ground/Wall Penetrating Radar.

Degree: PhD, Electrical Engineering, 2017, University of Vermont

URL: https://scholarworks.uvm.edu/graddis/799

► Ground penetrating radar (GPR) has been extensively utilized as a highly efficient and non-destructive testing method for infrastructure evaluation, such as highway rebar detection,… (more)

Subjects/Keywords: back-projection algorithm; entropy; ground penetrating radar; low-rank and sparse representation; multistatic radar; signal processing; Electrical and Electronics

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APA (6^th Edition):

Zhang, Y. (2017). Investigating Key Techniques to Leverage the Functionality of Ground/Wall Penetrating Radar. (Doctoral Dissertation). University of Vermont. Retrieved from https://scholarworks.uvm.edu/graddis/799

Chicago Manual of Style (16^th Edition):

Zhang, Yu. “Investigating Key Techniques to Leverage the Functionality of Ground/Wall Penetrating Radar.” 2017. Doctoral Dissertation, University of Vermont. Accessed January 19, 2021. https://scholarworks.uvm.edu/graddis/799.

MLA Handbook (7^th Edition):

Zhang, Yu. “Investigating Key Techniques to Leverage the Functionality of Ground/Wall Penetrating Radar.” 2017. Web. 19 Jan 2021.

Vancouver:

Zhang Y. Investigating Key Techniques to Leverage the Functionality of Ground/Wall Penetrating Radar. [Internet] [Doctoral dissertation]. University of Vermont; 2017. [cited 2021 Jan 19]. Available from: https://scholarworks.uvm.edu/graddis/799.

Council of Science Editors:

Zhang Y. Investigating Key Techniques to Leverage the Functionality of Ground/Wall Penetrating Radar. [Doctoral Dissertation]. University of Vermont; 2017. Available from: https://scholarworks.uvm.edu/graddis/799

Brno University of Technology

18. Nedeljković, Sava. Akcelerace fotoakustického snímkování: Acceleration of Photoacoustic Imaging.

Degree: 2020, Brno University of Technology

URL: http://hdl.handle.net/11012/192448

► The goal of this thesis is to provide a new method of image reconstruction out of data generated using Photo-Acoustic imaging. Photo-Acoustic imaging is a… (more)

Subjects/Keywords: fotoakustické snímkování; zpětná projekce; GPU; CUDA; OpenMP; vektorizace; vláknový paralelismus; Photo-Acoustic Imaging; Back-Projection; GPU; CUDA; OpenMP; Vectorization; Multi-threading

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APA (6^th Edition):

Nedeljković, S. (2020). Akcelerace fotoakustického snímkování: Acceleration of Photoacoustic Imaging. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/192448

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Nedeljković, Sava. “Akcelerace fotoakustického snímkování: Acceleration of Photoacoustic Imaging.” 2020. Thesis, Brno University of Technology. Accessed January 19, 2021. http://hdl.handle.net/11012/192448.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Nedeljković, Sava. “Akcelerace fotoakustického snímkování: Acceleration of Photoacoustic Imaging.” 2020. Web. 19 Jan 2021.

Vancouver:

Nedeljković S. Akcelerace fotoakustického snímkování: Acceleration of Photoacoustic Imaging. [Internet] [Thesis]. Brno University of Technology; 2020. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/11012/192448.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Nedeljković S. Akcelerace fotoakustického snímkování: Acceleration of Photoacoustic Imaging. [Thesis]. Brno University of Technology; 2020. Available from: http://hdl.handle.net/11012/192448

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

19. Ibrahim, Sallehuddin. Measurement of gas bubbles in a vertical water column using optical tomography.

Degree: PhD, 2000, Sheffield Hallam University

URL: http://shura.shu.ac.uk/19852/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324682

► This thesis presents an investigation into the application of optical fibre sensors to a tomographic imaging system for use with gas/water mixtures. Several sensing techniques… (more)

▼ This thesis presents an investigation into the application of optical fibre sensors to a tomographic imaging system for use with gas/water mixtures. Several sensing techniques for measurement of two component flow using non-intrusive techniques are discussed and their relevance to tomographic applications considered. Optical systems are shown to be worthy of investigation. The interaction between a collimated beam of light and a spherical bubble is described. Modelling of different arrangements of projections of optical sensing arrays is carried out to predict the expected sensor output voltage profiles due to different flow regimes represented by four models. The four flow models investigated are: a single pixel flow, two pixels flow, half flow and full flow models. The response of the sensors is based on three models: optical path length, optical attenuation and a combination of optical attenuation model and signal conditioning. In the optical path length model, opaque solids or small bubbles, which are conveyed, may totally or partially interrupt the optical beams within the sensing volume. In the optical attenuation model, the Lambert-Beer's Law is applied to model optical attenuation due to the different optical densities of the fluids being conveyed. The combination of optical attenuation model and signal conditioning is designed to improve the visual contrast of the tomograms compared with those based on the optical attenuation model. Layergram back-projection (LYGBP) is used to reconstruct the image. A hybrid reconstruction algorithm combining knowledge of sensors reading zero flow with LYGBP is tested and shown to improve the image reconstruction. The combination of a two orthogonal and two rectilinear projections system based on optical fibres is used to obtain the concentration profiles and velocity of gas bubbles in a vertical column. The optical fibre lens is modelled to determine the relationships between fibre parameters and collimation of light into the receiver circuit. Modelling of the flow pipe is also carried out to investigate which method of mounting the fibres minimises refraction of the collimated light entering the pipe and the measurement cross-section. The preparation of the ends of the optical fibre and design of the electronics, which process the tomographic data, are described. Concentration profiles obtained from experiments on small bubbles and large bubbles flowing in a hydraulic conveyor are presented. Concentration profiles are generated using the hybrid reconstruction algorithm. The optical tomographic system is shown to be sensitive to small bubbles in water of diameter 1-10 mm and volumetric flow rates up to 1 1/min, and large bubbles in water of diameter 15-20 mm and volumetric flow rates up to 3 1/min. Velocity measurements are obtained directly from cross correlation of upstream and downstream sensors' signals as well as from upstream and downstream pixel concentration values. Suggestions for further work on optical tomographic measurements are made.

Subjects/Keywords: 535; Optical fibre sensors; Layergram back projection

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APA (6^th Edition):

Ibrahim, S. (2000). Measurement of gas bubbles in a vertical water column using optical tomography. (Doctoral Dissertation). Sheffield Hallam University. Retrieved from http://shura.shu.ac.uk/19852/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324682

Chicago Manual of Style (16^th Edition):

Ibrahim, Sallehuddin. “Measurement of gas bubbles in a vertical water column using optical tomography.” 2000. Doctoral Dissertation, Sheffield Hallam University. Accessed January 19, 2021. http://shura.shu.ac.uk/19852/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324682.

MLA Handbook (7^th Edition):

Ibrahim, Sallehuddin. “Measurement of gas bubbles in a vertical water column using optical tomography.” 2000. Web. 19 Jan 2021.

Vancouver:

Ibrahim S. Measurement of gas bubbles in a vertical water column using optical tomography. [Internet] [Doctoral dissertation]. Sheffield Hallam University; 2000. [cited 2021 Jan 19]. Available from: http://shura.shu.ac.uk/19852/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324682.

Council of Science Editors:

Ibrahim S. Measurement of gas bubbles in a vertical water column using optical tomography. [Doctoral Dissertation]. Sheffield Hallam University; 2000. Available from: http://shura.shu.ac.uk/19852/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324682

20. LIU SHUAICHENG. Digital Image super resolution.

Degree: 2010, National University of Singapore

URL: http://scholarbank.nus.edu.sg/handle/10635/19056

Subjects/Keywords: Super resolution; Detail synthesis; Edge Prior; Colorization; Back projection

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APA (6^th Edition):

SHUAICHENG, L. (2010). Digital Image super resolution. (Thesis). National University of Singapore. Retrieved from http://scholarbank.nus.edu.sg/handle/10635/19056

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

SHUAICHENG, LIU. “Digital Image super resolution.” 2010. Thesis, National University of Singapore. Accessed January 19, 2021. http://scholarbank.nus.edu.sg/handle/10635/19056.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

SHUAICHENG, LIU. “Digital Image super resolution.” 2010. Web. 19 Jan 2021.

Vancouver:

SHUAICHENG L. Digital Image super resolution. [Internet] [Thesis]. National University of Singapore; 2010. [cited 2021 Jan 19]. Available from: http://scholarbank.nus.edu.sg/handle/10635/19056.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

SHUAICHENG L. Digital Image super resolution. [Thesis]. National University of Singapore; 2010. Available from: http://scholarbank.nus.edu.sg/handle/10635/19056

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Brno University of Technology

21. Klvaňa, Marek. Sledování vybraného objektu v dynamickém obraze: Object tracking in videofeed.

Degree: 2018, Brno University of Technology

URL: http://hdl.handle.net/11012/8175

► The aim of this thesis is a description and implementation of algorithms of the tracked objects in the video feed. This thesis introduces Mean shift… (more)

Subjects/Keywords: algoritmus; histogram; mean shift; CAMShift; zpětná projekce; adaptace; porovnání; algorithm; histogram; mean shift; CAMShift; back projection; adaptation; comparison

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APA (6^th Edition):

Klvaňa, M. (2018). Sledování vybraného objektu v dynamickém obraze: Object tracking in videofeed. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/8175

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Klvaňa, Marek. “Sledování vybraného objektu v dynamickém obraze: Object tracking in videofeed.” 2018. Thesis, Brno University of Technology. Accessed January 19, 2021. http://hdl.handle.net/11012/8175.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Klvaňa, Marek. “Sledování vybraného objektu v dynamickém obraze: Object tracking in videofeed.” 2018. Web. 19 Jan 2021.

Vancouver:

Klvaňa M. Sledování vybraného objektu v dynamickém obraze: Object tracking in videofeed. [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/11012/8175.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Klvaňa M. Sledování vybraného objektu v dynamickém obraze: Object tracking in videofeed. [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/8175

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Louisiana State University

22. Lackie, Adam. A directional algorithm for an electronically-collimated radiation detector (ECRD).

Degree: MS, Physical Sciences and Mathematics, 2006, Louisiana State University

URL: etd-01212007-175048 ; https://digitalcommons.lsu.edu/gradschool_theses/1312

► An electronically-collimated radiation detector (ECRD) is being developed to be used for locating radiation sources, e.g. for intraoperative localization of sentinel lymph nodes, or for… (more)

▼ An electronically-collimated radiation detector (ECRD) is being developed to be used for locating radiation sources, e.g. for intraoperative localization of sentinel lymph nodes, or for public safety applications. The design emphasizes a compact, portable detector with a wide field of view. Typical probes provide either high sensitivity but no directional information when uncollimated, or directional information but poor detection efficiency when collimated. The ECRD design provides high sensitivity to the presence of radiation because it lacks physical collimation, and simultaneously provides directional information using electronic collimation. Intended to be a hand-held device, the ECRD front end comprises an array of cadmium-zinc-telluride (CZT) detectors. An incident gamma ray scatters in the primary detector; interaction of the scattered photon in a secondary detector is detected in coincidence. For each photon, Compton kinematics specifies a cone on which the source must be located. Localization is achieved by finding the intersection of many Compton-scatter cones. This paper reports on the development and evaluation of two directional algorithms for this device, a modified Compton telescope algorithm and an algorithm based on finding the intersections of rectangles circumscribing the Compton cones. The methods developed were evaluated using ideal simulated data from a point source as well as data from a Monte Carlo simulation of an ECRD device. The accuracy, precision and convergence of each directional algorithm were evaluated. It was found that for the modified Compton telescope technique, a useful field of view extending 60º from the forward direction was observed, an angular resolution better than 20º was achieved throughout the field of view, and the method converged to these values around 300 events; the results for the ideal data did not significantly differ from those using the Monte Carlo data. For the circumscribed rectangle technique, the useful field of view covered nearly the entire area in front of the detector for the ideal data but the more realistic physics of the Monte Carlo simulated data shrank the useful field of view to the region within approximately 30º of the forward direction, while the angular resolution was better than 20º and convergence was approached at approximately 50 events.

Subjects/Keywords: back-projection; medical imaging; Compton imaging; imaging; Compton; backprojection

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APA (6^th Edition):

Lackie, A. (2006). A directional algorithm for an electronically-collimated radiation detector (ECRD). (Masters Thesis). Louisiana State University. Retrieved from etd-01212007-175048 ; https://digitalcommons.lsu.edu/gradschool_theses/1312

Chicago Manual of Style (16^th Edition):

Lackie, Adam. “A directional algorithm for an electronically-collimated radiation detector (ECRD).” 2006. Masters Thesis, Louisiana State University. Accessed January 19, 2021. etd-01212007-175048 ; https://digitalcommons.lsu.edu/gradschool_theses/1312.

MLA Handbook (7^th Edition):

Lackie, Adam. “A directional algorithm for an electronically-collimated radiation detector (ECRD).” 2006. Web. 19 Jan 2021.

Vancouver:

Lackie A. A directional algorithm for an electronically-collimated radiation detector (ECRD). [Internet] [Masters thesis]. Louisiana State University; 2006. [cited 2021 Jan 19]. Available from: etd-01212007-175048 ; https://digitalcommons.lsu.edu/gradschool_theses/1312.

Council of Science Editors:

Lackie A. A directional algorithm for an electronically-collimated radiation detector (ECRD). [Masters Thesis]. Louisiana State University; 2006. Available from: etd-01212007-175048 ; https://digitalcommons.lsu.edu/gradschool_theses/1312

Brno University of Technology

23. Franěk, Pavel. Metody zvyšování rozlišení digitálních snímků: Super-resolution methods.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/2045

► The main goal of this bachelor’s thesis is acquaint with method, which enable increasing resolution digital photos. Also realize individual interpolation method and Super-resolution by… (more)

Subjects/Keywords: Obraz; Rozlišení; Interpolace; Nejbližší soused; Bilineární interpolace; Bikubická interpolace; Super-rozlišení; Robust; Iterated back projection; Popoulis-Gerchberg; CMSE; Picture; resolution; interpolation; nearest neighbor; Bilinear interpolation; Bicubic interpolation; Super-resolution; Robust; Iterated back projection; Popoulis-Gerchberg; CMSE

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APA (6^th Edition):

Franěk, P. (2019). Metody zvyšování rozlišení digitálních snímků: Super-resolution methods. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/2045

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Franěk, Pavel. “Metody zvyšování rozlišení digitálních snímků: Super-resolution methods.” 2019. Thesis, Brno University of Technology. Accessed January 19, 2021. http://hdl.handle.net/11012/2045.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Franěk, Pavel. “Metody zvyšování rozlišení digitálních snímků: Super-resolution methods.” 2019. Web. 19 Jan 2021.

Vancouver:

Franěk P. Metody zvyšování rozlišení digitálních snímků: Super-resolution methods. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/11012/2045.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Franěk P. Metody zvyšování rozlišení digitálních snímků: Super-resolution methods. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/2045

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

24. Cho, Hyun Jeong. Autofocus and Back-Projection in Synthetic Aperture Radar Imaging.

Degree: PhD, Electrical Engineering: Systems, 2016, University of Michigan

URL: http://hdl.handle.net/2027.42/135868

► Spotlight-mode Synthetic Aperture Radar (SAR) imaging has received considerable attention due to its ability to produce high-resolution images of scene reflectivity. One of the main… (more)

▼ Spotlight-mode Synthetic Aperture Radar (SAR) imaging has received considerable attention due to its ability to produce high-resolution images of scene reflectivity. One of the main challenges in successful image recovery is the problem of defocusing, which occurs due to inaccuracies in the estimated round-trip delays of the transmitted radar pulses. The problem is most widely studied for far-field imaging scenarios with a small range of look angles since the problem formulation can be significantly simplified under the assumptions of planar wavefronts and one-dimensional defocusing. In practice, however, these assumptions are frequently violated. MultiChannel Autofocus (MCA) is a subspace-based approach to the defocusing problem that was originally proposed for far-field imaging, with a small range of look angles. A key motivation behind MCA is the observation that there exists a low-return region within the recovered image, due to the weak illumination near the edges of the antenna footprint. The strength of the MCA formulation is that it can be easily extended to more realistic scenarios with polar-format data, spherical wavefronts, and arbitrary terrain, due to its flexible linear-algebraic framework. The main aim of this thesis is to devise a more broadly effective autofocus approach by adopting MCA to the aforementioned scenarios. By forming the solution space in a domain where the defocusing effect is truly one-dimensional, we show that drastically improved restorations can be obtained for applications with small to fairly wide ranges of look angles. When the terrain topography is known, we utilize the versatile backprojection-based imaging methods in the model formulations for MCA to accurately account for the underlying geometry. The proposed extended MCA shows reductions in RMSE of up to 50% when the underlying terrain is highly elevated. We also analyze the effects of the filtering step, the amount of wave curvature, the shape of the terrain, and the flight path of the radar, on the reconstructed image via backprojection. Finally, we discuss the selection of low-return constraints and the importance of using terrain elevation within MCA formulation. Advisors/Committee Members: Munson Jr, David C (committee member), Eustice, Ryan M (committee member), Fessler, Jeffrey A (committee member), Yagle, Andrew E (committee member).

Subjects/Keywords: SAR imaging; Autofocus; Back-projection; Electrical Engineering; Engineering

…Discrete Fourier Transform FBP Filtered Back-Projection FBPC Filtered Back-Projection along… …Curves FFBP Fast Factorized Back-Projection FFT Fast Fourier Transform FM Frequency Modulation… …c [l , k ]}. 2.2.2 Filtered Back-Projection Filtered Back-Projection… …back-projection. A straightforward implementation of back-projection is computationally more… …at angle θ by the projection-slice theorem [1]. That is, the data for look angle…

11 more images…

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APA (6^th Edition):

Cho, H. J. (2016). Autofocus and Back-Projection in Synthetic Aperture Radar Imaging. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/135868

Chicago Manual of Style (16^th Edition):

Cho, Hyun Jeong. “Autofocus and Back-Projection in Synthetic Aperture Radar Imaging.” 2016. Doctoral Dissertation, University of Michigan. Accessed January 19, 2021. http://hdl.handle.net/2027.42/135868.

MLA Handbook (7^th Edition):

Cho, Hyun Jeong. “Autofocus and Back-Projection in Synthetic Aperture Radar Imaging.” 2016. Web. 19 Jan 2021.

Vancouver:

Cho HJ. Autofocus and Back-Projection in Synthetic Aperture Radar Imaging. [Internet] [Doctoral dissertation]. University of Michigan; 2016. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/2027.42/135868.

Council of Science Editors:

Cho HJ. Autofocus and Back-Projection in Synthetic Aperture Radar Imaging. [Doctoral Dissertation]. University of Michigan; 2016. Available from: http://hdl.handle.net/2027.42/135868

University of Waterloo

25. Mirjahanmardi, Seyed Hossein. Microwave Near-Field Imaging and Material Characterization.

Degree: 2020, University of Waterloo

URL: http://hdl.handle.net/10012/15725

► In recent years, microwave imaging has attracted many researchers from various fields such as medical imaging, remote sensing, and industrial ones because of its high… (more)

▼ In recent years, microwave imaging has attracted many researchers from various fields such as medical imaging, remote sensing, and industrial ones because of its high degree of penetration, non-ionizing and safe nature, and the low-cost of devices needed to generate images at low frequencies. This modality has great potential for producing unique and informative images because the response of materials, including human tissues, to electromagnetic excitation differs as the material's electrical characteristics change. Although microwave imaging has potentially distinctive features as an imaging modality, main challenges still exist. The penetration level of waves and their operation frequency have an inverse relation, meaning that to sufficiently penetrate the objects and identify small changes, such as anomalies in human bodies or an object, low-frequency waves are needed as excitation. However, decreasing the frequency degrades image resolution, a barrier in microwave imaging research. Other challenges are the need for simulations models, high computational resources, and significant processing time to retrieve the image of the object under test (OUT) beyond the diffraction limit. The high-resolution imaging algorithms reported in the literature are based on simulation-measurement combination. These algorithms are iterative and optimization-based, meaning that to reach an acceptable answer, numerous simulations need to be run. In addition, such iterative algorithms depend strongly on proper initialization to converge, which requires prior information that is not available unless MRI or CT images are taken and fed to these algorithms. This single initialization may not be enough if the OUT changes over time. For example, in the case of medical use, if a cancer treatment such as chemotherapy is ongoing, the tissues and therefore the OUT structure may change. In such cases, the first initialization no longer valid, resulting in the need for new MRI or CT images to be taken. But the need for such processes to create a microwave image, if medical use is concerned, violates the main goal of this modality: mass screening for early cancer detection. The other challenge of a microwave image is its resolution, which strongly depends on the operation wavelength and in most cases is much larger than the desired anomaly to be imaged. Having a large wavelength increases the diffraction phenomenon that occurs in the OUT while waves propagate. Thus, the wave energy packet spreads through the medium. The inverse algorithms reported in the literature, that take the diffraction phenomenon into account, are inherently ill-posed, meaning that a unique solution cannot be obtained unless some prior information is used. These algorithms are simulation-oriented, and consequently, are time-consuming, model-based, and do not produce reliable answers. The noticeable advantages of generating images at low frequencies have convinced us that microwave imaging modality has a strong role to play, potentially in medical…

Subjects/Keywords: microwave imaging; material characterization; medical imaging; near field imaging; electrically small radiators; permittivity measurement; liquid characterization; dispersive materials; image reconstruction; radon transform; filtered back projection

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APA (6^th Edition):

Mirjahanmardi, S. H. (2020). Microwave Near-Field Imaging and Material Characterization. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/15725

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mirjahanmardi, Seyed Hossein. “Microwave Near-Field Imaging and Material Characterization.” 2020. Thesis, University of Waterloo. Accessed January 19, 2021. http://hdl.handle.net/10012/15725.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mirjahanmardi, Seyed Hossein. “Microwave Near-Field Imaging and Material Characterization.” 2020. Web. 19 Jan 2021.

Vancouver:

Mirjahanmardi SH. Microwave Near-Field Imaging and Material Characterization. [Internet] [Thesis]. University of Waterloo; 2020. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/10012/15725.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mirjahanmardi SH. Microwave Near-Field Imaging and Material Characterization. [Thesis]. University of Waterloo; 2020. Available from: http://hdl.handle.net/10012/15725

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Brno University of Technology

26. Starý, Přemysl. Optimalizace nastavení tomografické stanice GE phoenix pro plastové součásti obsahující kovové části: Optimization of tomographic station GE phoenix adjustment for plastic components including metal parts.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/33363

► X-ray computed tomography is a tool mostly used in a medical diagnosis. A development of the technique and an improvement an in accuracy of tomographic… (more)

Subjects/Keywords: Rentgenová výpočetní tomografie; paralelní projekce; filtrovaná zpětná projekce; rentgenové spektrum; kvalitativní hodnocení; kontrast; šum; ostrost hrany.; X-ray computed tomography; parallel projection; filtered back-projection; qualitative evaluation; X-ray spectra; contrast; noise; edge sharpness.

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APA (6^th Edition):

Starý, P. (2019). Optimalizace nastavení tomografické stanice GE phoenix pro plastové součásti obsahující kovové části: Optimization of tomographic station GE phoenix adjustment for plastic components including metal parts. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/33363

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Starý, Přemysl. “Optimalizace nastavení tomografické stanice GE phoenix pro plastové součásti obsahující kovové části: Optimization of tomographic station GE phoenix adjustment for plastic components including metal parts.” 2019. Thesis, Brno University of Technology. Accessed January 19, 2021. http://hdl.handle.net/11012/33363.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Starý, Přemysl. “Optimalizace nastavení tomografické stanice GE phoenix pro plastové součásti obsahující kovové části: Optimization of tomographic station GE phoenix adjustment for plastic components including metal parts.” 2019. Web. 19 Jan 2021.

Vancouver:

Starý P. Optimalizace nastavení tomografické stanice GE phoenix pro plastové součásti obsahující kovové části: Optimization of tomographic station GE phoenix adjustment for plastic components including metal parts. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/11012/33363.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Starý P. Optimalizace nastavení tomografické stanice GE phoenix pro plastové součásti obsahující kovové části: Optimization of tomographic station GE phoenix adjustment for plastic components including metal parts. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/33363

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

The Ohio State University

27. Ren, Kai. Physics-Based Near-Field Microwave Imaging Algorithms for Dense Layered Media.

Degree: PhD, Electrical and Computer Engineering, 2017, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1511273574098455

► It is of importance to understand the physics as electromagnetic (EM) waves propagate through stratified media, are scattered back from buried irregularities, and are received… (more)

▼ It is of importance to understand the physics as electromagnetic (EM) waves propagate through stratified media, are scattered back from buried irregularities, and are received by an antenna in the near field. To generate better images, we need to incorporate the physics of the phenomena into the imaging algorithm, such as multiple reflections, refractions resulting from the existence of interfaces, and diffractions from embedded targets. A forward model is developed based on the spectral Green’s function associated with layered media weighted by the antenna gain pattern, satisfying the near-field condition and incorporating all refraction effects. Thereby, the weak scattering from deeper layers and wide angles will be compensated in a model-based imaging algorithm with the consideration of the refraction coefficients and gain pattern, respectively.To form real-time continuous images of targets embedded in a layered structure, a near-field uniform diffraction tomographic (UDT) imaging algorithm is developed. Conventional diffraction tomography (DT) improperly applies the stationary phase method for stratified environments to evaluate the innermost spectral integral. In DT the large argument is assumed to be the depth, which is not appropriate for near-field imaging. This results in amplitude discontinuities occurring at the interfaces between adjacent layers. The correct dimensionless large argument is the product of the free space wavenumber and the depth, as used in high-frequency asymptotic solutions. UDT therefore yields uniformly continuous images across the interfaces. And like DT, UDT retains the fast Fourier transform (FFT) relation in the algorithm for generating images very efficiently. Both 2D and 3D cases are investigated to verify the efficacy of the proposed UDT algorithm.To overcome the singularity problem caused by nulls in the antenna gain pattern in DT and UDT, a fast back-projection (FBP) imaging algorithm is propose to provide balanced monostatic and bistatic images, where both the stationary phase method and FFT are implemented to achieve the same computational efficiency as DT and UDT. FBP is derived based on the conventional back-projection (BP) imaging algorithm, and then finding the Fourier transform relation after applying the matched filter to the forward model. The comparison between UDT and FBP is investigated for the free space case. FBP is also demonstrated by a combined monostatic/bistatic synthetic aperture radar (SAR) imaging system, where the time for data collection is reduced by half through the appearance of virtual array elements. To achieve even faster data collection, a fixed multi-static array of antennas is proposed to efficiently illuminate a given subsurface volume using a simultaneous multiple-input multiple-output (MIMO) type signal.After constructing a radar image, it is of interest to quantify buried target parameters, such as the shape, location, orientation, and size. These parameters can be estimated by the implementation of the spatial moment method. However, due to…

Subjects/Keywords: Electromagnetics; Electrical Engineering; Microwave imaging, Radar signal processing, Uniform diffraction diffraction, fast back projection, least squares method, imaging through periodic structure, spatial moments method, buried object size estimation, shadow projection, lens effect

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APA (6^th Edition):

Ren, K. (2017). Physics-Based Near-Field Microwave Imaging Algorithms for Dense Layered Media. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1511273574098455

Chicago Manual of Style (16^th Edition):

Ren, Kai. “Physics-Based Near-Field Microwave Imaging Algorithms for Dense Layered Media.” 2017. Doctoral Dissertation, The Ohio State University. Accessed January 19, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1511273574098455.

MLA Handbook (7^th Edition):

Ren, Kai. “Physics-Based Near-Field Microwave Imaging Algorithms for Dense Layered Media.” 2017. Web. 19 Jan 2021.

Vancouver:

Ren K. Physics-Based Near-Field Microwave Imaging Algorithms for Dense Layered Media. [Internet] [Doctoral dissertation]. The Ohio State University; 2017. [cited 2021 Jan 19]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1511273574098455.

Council of Science Editors:

Ren K. Physics-Based Near-Field Microwave Imaging Algorithms for Dense Layered Media. [Doctoral Dissertation]. The Ohio State University; 2017. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1511273574098455

Universidade de Lisboa

28. Monteiro, André Miguel Martins Costa Correia. GATE Model of a SPECT-CT equipment for breast cancer diagnosis.

Degree: 2016, Universidade de Lisboa

URL: http://www.rcaap.pt/detail.jsp?id=oai:repositorio.ul.pt:10451/26323

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Tese de mestrado integrado, Engenharia Biomédica e Biofísica (Radiações em Diagnóstico e Terapia)Universidade de Lisboa, Faculdade de Ciências, 2016

Dedicated imaging systems for breast cancer… (more)

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Tese de mestrado integrado, Engenharia Biomédica e Biofísica (Radiações em Diagnóstico e Terapia)Universidade de Lisboa, Faculdade de Ciências, 2016

Dedicated imaging systems for breast cancer imaging have been comprehensively studied over the past decade. However, since they comprise only one imaging modality these systems are only able to provide either anatomical or functional information of the object of interest. The aim of this work was to simulate and evaluate the implementation of a dedicated system that would be able to extract information regarding both systems in order to provide a complementary diagnostic tool which could be used in inconclusive diagnosis cases. The proposed solution was to develop two dedicated systems. A dedicated breast computed tomography (DBCT) system that would provide anatomical information and a dedicated single photon emission mammography (SPEM), using convergent collimators, that would retrieve functional information. To create a computer model of this multimodality system, Monte Carlo (MC) simulations were conducted with Geant4 Application for Emission Tomography (GATE) using a simple breast cylindrical phantom with 35 mm radius and 150 mm height, which had 5 mm radius spherical masses composed of aluminum inside it. For DBCT, the MC simulations were acquired with a PaxScan A® 2520D/CL Amorphous Silicon Digital X-Ray Imager with total dimensions of 192x242x4 mm and 0.508x0.508x4 mm pixels, over 16 projections covering 180º of the phantom, extended to 360º exploiting its cylindrical symmetry. Inside the phantom were placed 5 tumour masses equidistantly along two axis with a tumour mass at the center. For SPECT, the MC simulations were performed using a dual-head SPECT scanner designed by Dr. Ricardo Capote with 64.0x151.2x188.5 mm as dimensions with pixelated LYSO crystals of 20x2x2 mm and convergent collimators with the same phantom, but with the same 5 mm radius tumour masses placed solely in the x axis. The MC simulations were conducted in a computer cluster with 4 executions machines. The projections resultant of the simulations were reconstructed using different algorithms. For DBCT it was used an analytical method of filtered backprojection (FBP) and for SPEM it was used an iterative maximum likelihood expectation maximization (MLEM) algorithm. To validate the results two non-absolut metrics were calculated to make a relative evaluation of the image quality results. These metrics were only applied to DBCT, since the results obtained for SPEM were not as expected. Contrast and contrast to noise ratio demonstrated that the image quality degrades from the center to the periphery of the DBCT detector. In conclusion, the acquired results demonstrated the feasibility of breast dedicated systems to, especially for the DBCT system, which yielded the best results, but further development need to be pursued in order to take the most potential of the developed systems which have potential for being used in future studies with more complex and realistic conditions and voxelised…

Advisors/Committee Members: Matela, Nuno Miguel de Pinto Lobo e, 1978-, Almeida, Pedro Miguel Dinis de, 1968-.

Subjects/Keywords: Cancro da mama; Tomografia computorizada; Mamogafia por emissão de Fotão Único; Reconstrução de imagem; Simulações de Monte Carlo; Geant4 application for emission tomography; Filtered back projection; Maximum likelihood expectation maximization; Contraste; Rácio entre o contraste e o ruído; Teses de mestrado - 2016; Departamento de Física

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Monteiro, A. M. M. C. C. (2016). GATE Model of a SPECT-CT equipment for breast cancer diagnosis. (Thesis). Universidade de Lisboa. Retrieved from http://www.rcaap.pt/detail.jsp?id=oai:repositorio.ul.pt:10451/26323

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Monteiro, André Miguel Martins Costa Correia. “GATE Model of a SPECT-CT equipment for breast cancer diagnosis.” 2016. Thesis, Universidade de Lisboa. Accessed January 19, 2021. http://www.rcaap.pt/detail.jsp?id=oai:repositorio.ul.pt:10451/26323.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Monteiro, André Miguel Martins Costa Correia. “GATE Model of a SPECT-CT equipment for breast cancer diagnosis.” 2016. Web. 19 Jan 2021.

Vancouver:

Monteiro AMMCC. GATE Model of a SPECT-CT equipment for breast cancer diagnosis. [Internet] [Thesis]. Universidade de Lisboa; 2016. [cited 2021 Jan 19]. Available from: http://www.rcaap.pt/detail.jsp?id=oai:repositorio.ul.pt:10451/26323.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Monteiro AMMCC. GATE Model of a SPECT-CT equipment for breast cancer diagnosis. [Thesis]. Universidade de Lisboa; 2016. Available from: http://www.rcaap.pt/detail.jsp?id=oai:repositorio.ul.pt:10451/26323

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

29. Márcia Luciana Aguena Castro. Super resolução baseada em métodos iterativos de restauração.

Degree: 2013, Universidade Federal de São Carlos

URL: http://www.bdtd.ufscar.br/htdocs/tedeSimplificado//tde_busca/arquivo.php?codArquivo=6651

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A melhora da resolução de uma imagem é sempre desejada, independentemente de seu objetivo, mas principalmente se destinada a análise visual. O desenvolvimento de hardware… (more)

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A melhora da resolução de uma imagem é sempre desejada, independentemente de seu objetivo, mas principalmente se destinada a análise visual. O desenvolvimento de hardware para o aumento de resolução de uma imagem em sua captura ainda possui o custo mais elevado do que as soluções algorítmicas de super resolução (SR). Assim como a restauração de imagens, a super resolução também é um problema inverso mal-condicionado e possui infinitas soluções. Este trabalho analisa métodos de restauração iterativos (Van Cittert, Tikhonov-Miller e Gradiente Conjugado) que proponham soluções para o problema do malcondicionamento e os compara com o método IBP (Iterative Back-Projection). A análise das semelhanças encontradas é base para uma generalização de modo que outros métodos iterativos de restauração possam ter suas propriedades adaptadas, tais como regularização do mal-condicionamento, redução do ruído e outras degradações e aumento na taxa de convergência, para que possam ser incorporadas à técnicas de super resolução. Dois novos métodos foram criados como estudo de caso da generalização proposta: o primeiro é um método de super-resolução para imageamento por ressonância magnética (MRI) dinâmico do processo de deglutição, que utiliza uma filtragem de Wiener adaptativa como regularização e registro não-rígido; o segundo é um método de pansharpening das bandas do satélite SPOT, que utiliza amostragem baseada nas características do sensor e filtragem de Wiener não-adaptativa.

The resolution enhancement of an image is always desirable, independently of its objective, but mainly if the image has the purpose of visual analysis. The hardware development for increasing the image resolution still has a higher cost than the algorithmic solutions for super-resolution. Like image restoration, super-resolution is also an ill-conditioned inverse problem, and has an infinite number of solutions. This work analyzes the iterative restoration methods (Van Cittert, Tikhonov-Miller and Conjugate Gradiente) which propose solutions for the ill-conditioning problem and compares them with the IBP method (Iterative Back Projection). The analysis of the found similarities is the basis of a generalization, such that other iterative restoration methods can have their properties adapted, as regularization of the ill-conditioning, noise reduction and other degradations and the increase of the convergence rate can be incorporated to the techniques of super-resolution. Two new methods were created as case studies of the proposed generalization: the first one is a super-resolution method for dynamic magnetic resonance imaging (MRI) of the swallowing process, that uses an adaptiveWiener filtering as regularization and a non-rigid registration; and the second one is a pan sharpening method of SPOT satellite bands, that uses sampling based on sensors characteristics and non-adaptive Wiener filtering.

Advisors/Committee Members: Nelson Delfino d Ávila Mascarenhas.

Subjects/Keywords: Super-resolution; Image fusion; Wiener filter; Swallowing MRI; Pansharpening; Processamento de imagens; Reconstrução por super resolução; Restauração de imagens; Restauração iterativa; Fusão de imagens; Filtro de Wiener; Super resolucão; Retroprojeção de imagens; MRI de deglutição; Pansharpening; CIENCIA DA COMPUTACAO; Images restoration; Images back projection; Iterative restoration

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Castro, M. L. A. (2013). Super resolução baseada em métodos iterativos de restauração. (Thesis). Universidade Federal de São Carlos. Retrieved from http://www.bdtd.ufscar.br/htdocs/tedeSimplificado//tde_busca/arquivo.php?codArquivo=6651

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Castro, Márcia Luciana Aguena. “Super resolução baseada em métodos iterativos de restauração.” 2013. Thesis, Universidade Federal de São Carlos. Accessed January 19, 2021. http://www.bdtd.ufscar.br/htdocs/tedeSimplificado//tde_busca/arquivo.php?codArquivo=6651.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Castro, Márcia Luciana Aguena. “Super resolução baseada em métodos iterativos de restauração.” 2013. Web. 19 Jan 2021.

Vancouver:

Castro MLA. Super resolução baseada em métodos iterativos de restauração. [Internet] [Thesis]. Universidade Federal de São Carlos; 2013. [cited 2021 Jan 19]. Available from: http://www.bdtd.ufscar.br/htdocs/tedeSimplificado//tde_busca/arquivo.php?codArquivo=6651.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Castro MLA. Super resolução baseada em métodos iterativos de restauração. [Thesis]. Universidade Federal de São Carlos; 2013. Available from: http://www.bdtd.ufscar.br/htdocs/tedeSimplificado//tde_busca/arquivo.php?codArquivo=6651

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Brigham Young University

30. Landon, Jonathan Charles. Development of an Experimental Phased-Array Feed System and Algorithms for Radio Astronomy.

Degree: PhD, 2011, Brigham Young University

URL: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3793&context=etd

► Phased array feeds (PAFs) are a promising new technology for astronomical radio telescopes. While PAFs have been used in other fields, the demanding sensitivity and… (more)

▼ Phased array feeds (PAFs) are a promising new technology for astronomical radio telescopes. While PAFs have been used in other fields, the demanding sensitivity and calibration requirements in astronomy present unique new challenges. This dissertation presents some of the first astronomical PAF results demonstrating the lowest noise temperature and highest sensitivity at the time (66 Kelvin and 3.3 m²/K, respectively), obtained using a narrowband (425 kHz bandwidth) prototype array of 19 linear co-polarized L-band dipoles mounted at the focus of the Green Bank 20 Meter Telescope at the National Radio Astronomy Observatory (NRAO) in Green Bank, West Virginia. Results include spectral line detection of hydroxyl (OH) sources W49N and W3OH, and some of the first radio camera images made using a PAF, including an image of the Cygnus X region. A novel array Y-factor technique for measuring the isotropic noise response of the array is shown along with experimental measurements for this PAF. Statistically optimal beamformers (Maximum SNR and MVDR) are used throughout the work. Radio-frequency interference (RFI) mitigation is demonstrated experimentally using spatial cancelation with the PAF. Improved RFI mitigation is achieved in the challenging cases of low interference-to-noise ratio (INR) and moving interference by combining subspace projection (SP) beamforming with a polynomial model to track a rank 1 subspace. Limiting factors in SP are investigated including sample estimation error, subspace smearing, noise bias, and spectral scooping; each of these factors is overcome with the polynomial model and prewhitening. Numerical optimization leads to the polynomial subspace projection (PSP) method, and least-squares fitting to the series of dominant eigenvectors over a series of short term integrations (STIs) leads to the eigenvector polynomial subspace projection (EPSP) method. Expressions for the gradient, Hessian, and Jacobian are given for use in numerical optimization. Results are given for simulated and experimental data, demonstrating deeper beampattern nulls by 6 to 30dB. To increase the system bandwidth toward the hundreds of MHz bandwidth required by astronomers for a fully science-ready instrument, an FPGA digital backend is introduced using a 64-input analog-to-digital converter running at 50 Msamp/sec and the ROACH processing board developed at the University of California, Berkeley. International efforts to develop digital back ends for large antenna arrays are considered, and a road map is proposed for development of a hardware correlator/beamformer at BYU using three ROACH boards communicating over 10 gigabit Ethernet.

Subjects/Keywords: phased array feeds; radio astronomy; isotropic noise response; array Y-factor method; interference canceling; adaptive array processing; adaptive beamforming; subspace projection; subspace tracking; covariance estimation; CASPER; ROACH; FPGA; astronomical back ends; Electrical and Computer Engineering

Record Details Similar Records Cite « Share

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Landon, J. C. (2011). Development of an Experimental Phased-Array Feed System and Algorithms for Radio Astronomy. (Doctoral Dissertation). Brigham Young University. Retrieved from https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3793&context=etd

Chicago Manual of Style (16^th Edition):

Landon, Jonathan Charles. “Development of an Experimental Phased-Array Feed System and Algorithms for Radio Astronomy.” 2011. Doctoral Dissertation, Brigham Young University. Accessed January 19, 2021. https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3793&context=etd.

MLA Handbook (7^th Edition):

Landon, Jonathan Charles. “Development of an Experimental Phased-Array Feed System and Algorithms for Radio Astronomy.” 2011. Web. 19 Jan 2021.

Vancouver:

Landon JC. Development of an Experimental Phased-Array Feed System and Algorithms for Radio Astronomy. [Internet] [Doctoral dissertation]. Brigham Young University; 2011. [cited 2021 Jan 19]. Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3793&context=etd.

Council of Science Editors:

Landon JC. Development of an Experimental Phased-Array Feed System and Algorithms for Radio Astronomy. [Doctoral Dissertation]. Brigham Young University; 2011. Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3793&context=etd

Open Access Theses and Dissertations