You searched for subject:(Optical Motion Capture).
Showing records 1 – 19 of
19 total matches.
No search limiters apply to these results.
Queens University
1.
Hutchinson, Laura.
Improved Accuracy in Optical Motion Capture Measurements Leads to Increased Sensitivity to Kinematic Changes
.
Degree: Mechanical and Materials Engineering, 2016, Queens University
URL: http://hdl.handle.net/1974/14726 
► Clinical optical motion capture allows us to obtain kinematic and kinetic outcome measures that aid clinicians in diagnosing and treating different pathologies affecting healthy gait.…
(more)
▼ Clinical optical motion capture allows us to obtain kinematic and kinetic outcome measures that aid clinicians in diagnosing and treating different pathologies affecting healthy gait. The long term aim for gait centres is for subject-specific analyses that can predict, prevent, or reverse the effects of pathologies through gait retraining. To track the body, anatomical segment coordinate systems are commonly created by applying markers to the surface of the skin over specific, bony anatomy that is manually palpated. The location and placement of these markers is subjective and precision errors of up to 25mm have been reported [1]. Additionally, the selection of which anatomical landmarks to use in segment models can result in large angular differences; for example angular differences in the trunk can range up to 53o for the same motion depending on marker placement [2].
These errors can result in erroneous kinematic outcomes that either diminish or increase the apparent effects of a treatment or pathology compared to healthy data. Our goal was to improve the accuracy and precision of optical motion capture outcome measures. This thesis describes two separate studies. In the first study we aimed to establish an approach that would allow us to independently quantify the error among trunk models. Using this approach we determined if there was a best model to accurately track trunk motion. In the second study we designed a device to improve precision for test, re-test protocols that would also reduce the set-up time for motion capture experiments.
Our method to compare a kinematically derived centre of mass velocity to one that was derived kinetically was successful in quantifying error among trunk models. Our findings indicate that models that use lateral shoulder markers as well as limit the translational degrees of freedom of the trunk through shared pelvic markers result in the least amount of error for the tasks we studied. We also successfully reduced intra- and inter-operator anatomical marker placement errors using a marker alignment device.
The improved accuracy and precision resulting from the methods established in this thesis may lead to increased sensitivity to changes in kinematics, and ultimately result in more consistent treatment outcomes.
Subjects/Keywords: Biomechanics
;
Human Kinematics
;
Optical Motion Capture
;
Gait
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hutchinson, L. (2016). Improved Accuracy in Optical Motion Capture Measurements Leads to Increased Sensitivity to Kinematic Changes
. (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/14726
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Hutchinson, Laura. “Improved Accuracy in Optical Motion Capture Measurements Leads to Increased Sensitivity to Kinematic Changes
.” 2016. Thesis, Queens University. Accessed April 18, 2021.
http://hdl.handle.net/1974/14726.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Hutchinson, Laura. “Improved Accuracy in Optical Motion Capture Measurements Leads to Increased Sensitivity to Kinematic Changes
.” 2016. Web. 18 Apr 2021.
Vancouver:
Hutchinson L. Improved Accuracy in Optical Motion Capture Measurements Leads to Increased Sensitivity to Kinematic Changes
. [Internet] [Thesis]. Queens University; 2016. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/1974/14726.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Hutchinson L. Improved Accuracy in Optical Motion Capture Measurements Leads to Increased Sensitivity to Kinematic Changes
. [Thesis]. Queens University; 2016. Available from: http://hdl.handle.net/1974/14726
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Queens University
2.
Rogers, Jonathan.
MIMU sensors for joint kinematic estimation: anatomical landmarking and frame correction
.
Degree: Mechanical and Materials Engineering, 2016, Queens University
URL: http://hdl.handle.net/1974/14705
► The ability to capture human motion allows researchers to evaluate an individual’s gait. Gait can be measured in different ways, from camera-based systems to Magnetic…
(more)
▼ The ability to capture human motion allows researchers to evaluate an individual’s gait. Gait can be measured in different ways, from camera-based systems to Magnetic and Inertial Measurement Units (MIMU). The former uses cameras to track positional information of photo-reflective markers, while the latter uses accelerometers, gyroscopes, and magnetometers to measure segment orientation. Both systems can be used to measure joint kinematics, but the results vary because of their differences in anatomical calibrations. The objective of this thesis was to study potential solutions for reducing joint angle discrepancies between MIMU and camera-based systems. The first study worked to correct the anatomical frame differences between MIMU and camera-based systems via the joint angles of both systems. This study looked at full lower body correction versus correcting a single joint. Single joint correction showed slightly better alignment of both systems, but does not take into account that body segments are generally affected by more than one joint. The second study explores the possibility of anatomical landmarking using a single camera and a pointer apparatus. Results showed anatomical landmark position could be determined using a single camera, as the anatomical landmarks found from this study and a camera-based system showed similar results. This thesis worked on providing a novel way for obtaining anatomical landmarks with a single point-and-shoot camera, as well aligning anatomical frames between MIMUs and camera-based systems using joint angles.
Subjects/Keywords: Optical Motion Capture
;
Joint Kinematics
;
Inertial Motion Capture
;
Biomechanics
;
Mechanical Engineering
;
Anatomical Landmarking
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Rogers, J. (2016). MIMU sensors for joint kinematic estimation: anatomical landmarking and frame correction
. (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/14705
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Rogers, Jonathan. “MIMU sensors for joint kinematic estimation: anatomical landmarking and frame correction
.” 2016. Thesis, Queens University. Accessed April 18, 2021.
http://hdl.handle.net/1974/14705.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Rogers, Jonathan. “MIMU sensors for joint kinematic estimation: anatomical landmarking and frame correction
.” 2016. Web. 18 Apr 2021.
Vancouver:
Rogers J. MIMU sensors for joint kinematic estimation: anatomical landmarking and frame correction
. [Internet] [Thesis]. Queens University; 2016. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/1974/14705.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Rogers J. MIMU sensors for joint kinematic estimation: anatomical landmarking and frame correction
. [Thesis]. Queens University; 2016. Available from: http://hdl.handle.net/1974/14705
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Uppsala University
3.
Mattsson, Viktor.
Viability of Using Markerless Motion Capture : In the Creation of Animations for Computer Games.
Degree: Game Design, 2014, Uppsala University
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-227788
► This thesis presents a study on how to create a production pipeline using a markerless motion capture system for the creation of animations in…
(more)
▼ This thesis presents a study on how to create a production pipeline using a markerless motion capture system for the creation of animations in computer games. The questions the authors desire to answer are: Is it possible to create a pipeline that uses markerless motion capture for the creation of animations in computer games? And also: Can a markerless motion capture system fit in an animation pipeline for games? This thesis is based on previous work by Kakee Lau (Lau, 2012), a former student of Gotland University College. He describes a pipeline for working with passive optical motion capture for games. To fit the markerless motion capture system, there must be some changes to Lau’s already established pipeline. The method used in this thesis is based on a pipeline described in Lau’s thesis (Lau, 2012). The authors have made some alterations to this pipeline for it to be more suitable for markerless motion capture. The pipeline that the authors propose covers the setup of two Kinect cameras, the calibration, the recording, the cleaning and the preparation for MotionBuilder. Due to some factors that were not taken into consideration during testing, there cannot be any quantitative conclusion in this thesis to which system is the better one. Based on the findings of this study the authors can conclude that a markerless motion capture system is a viable method for game animation creation, yet not giving the same quality of results as a passive optical motion capture system.
Subjects/Keywords: Production pipeline; passive optical motion capture; markerless motion capture; animation; computer games.
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Mattsson, V. (2014). Viability of Using Markerless Motion Capture : In the Creation of Animations for Computer Games. (Thesis). Uppsala University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-227788
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Mattsson, Viktor. “Viability of Using Markerless Motion Capture : In the Creation of Animations for Computer Games.” 2014. Thesis, Uppsala University. Accessed April 18, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-227788.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Mattsson, Viktor. “Viability of Using Markerless Motion Capture : In the Creation of Animations for Computer Games.” 2014. Web. 18 Apr 2021.
Vancouver:
Mattsson V. Viability of Using Markerless Motion Capture : In the Creation of Animations for Computer Games. [Internet] [Thesis]. Uppsala University; 2014. [cited 2021 Apr 18].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-227788.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Mattsson V. Viability of Using Markerless Motion Capture : In the Creation of Animations for Computer Games. [Thesis]. Uppsala University; 2014. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-227788
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Utah
4.
Lincoln, Lucas Samuel.
Towards a mobile motion analysis laboratory: improvements in wearable motion capture and force measurement.
Degree: MS, Mechanical Engineering, 2012, University of Utah
URL: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/648/rec/2765
► Gait analysis is an important tool for diagnosing a wide variety of disorders, with its increasingly accepted benefits culminating in the widespread adoption of motion…
(more)
▼ Gait analysis is an important tool for diagnosing a wide variety of disorders, with its increasingly accepted benefits culminating in the widespread adoption of motion analysis laboratories. A modern analysis laboratory consists of a multicamera marker tracking system for 3D reconstruction of kinematics and multiple high-fidelity load transducers to determine ground reaction force and enable inverse-dynamics forbiomechanics. There is a need for an alternative motion analysis system which does not require a fixed laboratory setting and is lower in cost; freeing the motion capture from the laboratory and reducing the technology costs would enable long-term, home-based,natural monitoring of subjects.This thesis describes two contributions to the end goal of an inexpensive, mobile, insole-based motion analysis laboratory. First is the application of an inertialmeasurement-unit calibration routine and zero-velocity-update algorithm to improve position and orientation tracking. Second is the development, from basic sensor to prototype, of an insole capable of measuring 3 degree-of-freedom ground reaction force.These contributions represent a proof-of-concept that quantitative gait analysis, complete with dynamics, is possible with an insole-based system.
Subjects/Keywords: Gait; Haptics; Kinematics; Optical; Sensor; Tactile; Motion analysis laboratory; Motion capture
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Lincoln, L. S. (2012). Towards a mobile motion analysis laboratory: improvements in wearable motion capture and force measurement. (Masters Thesis). University of Utah. Retrieved from http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/648/rec/2765
Chicago Manual of Style (16th Edition):
Lincoln, Lucas Samuel. “Towards a mobile motion analysis laboratory: improvements in wearable motion capture and force measurement.” 2012. Masters Thesis, University of Utah. Accessed April 18, 2021.
http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/648/rec/2765.
MLA Handbook (7th Edition):
Lincoln, Lucas Samuel. “Towards a mobile motion analysis laboratory: improvements in wearable motion capture and force measurement.” 2012. Web. 18 Apr 2021.
Vancouver:
Lincoln LS. Towards a mobile motion analysis laboratory: improvements in wearable motion capture and force measurement. [Internet] [Masters thesis]. University of Utah; 2012. [cited 2021 Apr 18].
Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/648/rec/2765.
Council of Science Editors:
Lincoln LS. Towards a mobile motion analysis laboratory: improvements in wearable motion capture and force measurement. [Masters Thesis]. University of Utah; 2012. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/648/rec/2765
Universiteit Utrecht
5.
Donselaar, M.
Online Full Body Motion Reconstruction.
Degree: 2014, Universiteit Utrecht
URL: http://dspace.library.uu.nl:8080/handle/1874/296598
► This thesis described the process of creating a full Performance Animation pipeline from motion capture to virtual character animation. In this pipeline, techniques are discussed…
(more)
▼ This thesis described the process of creating a full Performance Animation pipeline from
motion capture to virtual character animation. In this pipeline, techniques are discussed to detect and handle mislabeled
motion capture markers, reduce data noise by means of a Kalman filter, extrapolate and interpolate, as well as skeleton reconstruction and inverse kinematics by means of the Cyclic Coordinate Descent Algorithm. The animations are created using different setups of markers and joint freedom, in order to test the effects markers and joints have on the perceived naturalness and determine the optimal configuration. An alternative way of indicating naturalness is described using objective error metrics, which show a moderately strong correlation to perceived naturalness data obtained through a user case study.
Advisors/Committee Members: Pronost, N.G..
Subjects/Keywords: performance animation; motion reconstruction; online; naturalness; animation; motion capture; optical motion capture; Kalman filter; Cyclic Coordinate Descent; inverse kinematics, skeleton fitting
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Donselaar, M. (2014). Online Full Body Motion Reconstruction. (Masters Thesis). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/296598
Chicago Manual of Style (16th Edition):
Donselaar, M. “Online Full Body Motion Reconstruction.” 2014. Masters Thesis, Universiteit Utrecht. Accessed April 18, 2021.
http://dspace.library.uu.nl:8080/handle/1874/296598.
MLA Handbook (7th Edition):
Donselaar, M. “Online Full Body Motion Reconstruction.” 2014. Web. 18 Apr 2021.
Vancouver:
Donselaar M. Online Full Body Motion Reconstruction. [Internet] [Masters thesis]. Universiteit Utrecht; 2014. [cited 2021 Apr 18].
Available from: http://dspace.library.uu.nl:8080/handle/1874/296598.
Council of Science Editors:
Donselaar M. Online Full Body Motion Reconstruction. [Masters Thesis]. Universiteit Utrecht; 2014. Available from: http://dspace.library.uu.nl:8080/handle/1874/296598
University of Waterloo
6.
Buchman-Pearle, Jessa.
An Investigation of Methods to Attenuate Soft Tissue Artifact of the Thigh in High Knee Flexion.
Degree: 2020, University of Waterloo
URL: http://hdl.handle.net/10012/16164
► Soft tissue artifact during optical motion capture, or the movement of skin markers relative to bone, is widely accepted as a significant source of error…
(more)
▼ Soft tissue artifact during optical motion capture, or the movement of skin markers relative to bone, is widely accepted as a significant source of error in estimations of angles and moments. In some cases, the error associated with soft tissue movement exceeds that of the physiological motion of the joint, thereby calling into question the accuracy of the data obtained and casting doubt on the ability to determine mechanical demands of a given task. While previous studies have attempted to quantify soft tissue artifact, the variability in error with placement of skin markers (i.e. location specificity), the subject investigated (i.e. subject specificity), and the requirements of the task examined (i.e. task specificity), severely compromises the ability to develop methods which minimize and compensate for soft tissue artifact. Thus, the global objective of this thesis was to investigate soft tissue artifact of the thigh in high knee flexion movements and develop recommendations to standardize data collection and processing techniques. High knee flexion was examined because knee flexion beyond approximately 100° lacks investigation despite the unique deformation of soft tissue that occurs in this range (i.e. thigh-calf contact). Additionally, the repetitive adoption of high knee flexion is associated with knee joint injury and disease; thus, to more clearly elucidate mechanisms for these injuries and disease, improvements in the accuracy and reliability of collection and processing procedures is required.
Fifty participants performed squatting and kneeling movements while motion of the pelvis and lower limb was recorded with optical motion capture and force data was synchronously recorded from four embedded force plates. Six identical rigid marker clusters were distributed on the distal and middle third of the thighs, and on the anterior, lateral, and anterolateral aspect of the thighs, while one marker cluster was adhered to the pelvis, shanks, and feet. Anthropometric measures were also taken for each subject including sex, height, mass, waist circumference, thigh length, thigh proximal, middle, and distal circumference, and thigh skinfold thickness. Data processing was divided into two studies.
The first study developed a non-invasive method to estimate soft tissue artifact for each thigh marker cluster which consisted of measuring the mean of the peak difference in the hip joint center position when tracked with the pelvis cluster (i.e. the gold standard) versus each of the six thigh marker clusters. Bland-Altman methods were then utilized to compare agreement between the pelvis and thigh marker clusters for each task during maximal knee flexion. Across the tasks, the mean difference ranged from -4.93 to 0.03 cm while the lower and upper limits of agreement ranged from -11.86 to -3.27 cm and -0.87 to 5.33 cm, respectively. The mid-anterolateral cluster tended to be least susceptible to soft tissue artifact across the tasks and thus would be recommended, while the lateral clusters were most susceptible and…
Subjects/Keywords: soft tissue artifact; optical motion capture; hip joint center; squat; kneel
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Buchman-Pearle, J. (2020). An Investigation of Methods to Attenuate Soft Tissue Artifact of the Thigh in High Knee Flexion. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/16164
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Buchman-Pearle, Jessa. “An Investigation of Methods to Attenuate Soft Tissue Artifact of the Thigh in High Knee Flexion.” 2020. Thesis, University of Waterloo. Accessed April 18, 2021.
http://hdl.handle.net/10012/16164.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Buchman-Pearle, Jessa. “An Investigation of Methods to Attenuate Soft Tissue Artifact of the Thigh in High Knee Flexion.” 2020. Web. 18 Apr 2021.
Vancouver:
Buchman-Pearle J. An Investigation of Methods to Attenuate Soft Tissue Artifact of the Thigh in High Knee Flexion. [Internet] [Thesis]. University of Waterloo; 2020. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/10012/16164.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Buchman-Pearle J. An Investigation of Methods to Attenuate Soft Tissue Artifact of the Thigh in High Knee Flexion. [Thesis]. University of Waterloo; 2020. Available from: http://hdl.handle.net/10012/16164
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Virginia Tech
7.
Lewis, Robert Alan.
Analysis of a self-contained motion capture garment for e-textiles.
Degree: MS, Electrical and Computer Engineering, 2011, Virginia Tech
URL: http://hdl.handle.net/10919/32529
► Wearable computers and e-textiles are becoming increasingly widespread in todayâ s society. Motion capture is one of the many potential applications for on-body electronic systems.…
(more)
▼ Wearable computers and e-textiles are becoming increasingly widespread in todayâ s society.
Motion capture is one of the many potential applications for on-body electronic systems. Previous work has been performed at Virginia Techâ s E-textiles Laboratory to design a framework for a self-contained loose fit
motion capture system. This system gathers information from sensors distributed throughout the body on a â smartâ garment. This thesis presents the hardware and software components of the framework, along with improvements made to it. This thesis also presents an analysis of both the on-body and off-body network communication to determine how many sensors can be supported on the garment at a given time. Finally, this thesis presents a method for determining the accuracy of the smart garment and shows how it compares against a commercially available
motion capture system.
Advisors/Committee Members: Martin, Thomas L. (committeechair), Athanas, Peter M. (committee member), Jones, Mark T. (committeecochair).
Subjects/Keywords: Optical Motion Capture; Inertial Measurement Units; E-textiles; Wearable Computing
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Lewis, R. A. (2011). Analysis of a self-contained motion capture garment for e-textiles. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/32529
Chicago Manual of Style (16th Edition):
Lewis, Robert Alan. “Analysis of a self-contained motion capture garment for e-textiles.” 2011. Masters Thesis, Virginia Tech. Accessed April 18, 2021.
http://hdl.handle.net/10919/32529.
MLA Handbook (7th Edition):
Lewis, Robert Alan. “Analysis of a self-contained motion capture garment for e-textiles.” 2011. Web. 18 Apr 2021.
Vancouver:
Lewis RA. Analysis of a self-contained motion capture garment for e-textiles. [Internet] [Masters thesis]. Virginia Tech; 2011. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/10919/32529.
Council of Science Editors:
Lewis RA. Analysis of a self-contained motion capture garment for e-textiles. [Masters Thesis]. Virginia Tech; 2011. Available from: http://hdl.handle.net/10919/32529
Stellenbosch University
8.
Cockroft, Stephen John.
Novel motion capture methods for sports analysis : case studies of cycling and rugby goal kicking.
Degree: PhD, Mechanical and Mechatronic Engineering, 2015, Stellenbosch University
URL: http://hdl.handle.net/10019.1/98101
► ENGLISH ABSTRACT: The quest to understand and optimize human movement performance has advanced rapidly in recent years through innovations in movement science and technology. Motion…
(more)
▼ ENGLISH ABSTRACT: The quest to understand and optimize human movement performance has advanced rapidly in recent years through innovations in movement science and technology.
Motion capture technologies have become significantly more mobile, powerful and unobtrusive, enabling new research opportunities. This has resulted in the continuous development of novel quantitative methods for observing and interpreting expert performance in professional sports. A contribution is presented towards this ongoing endeavor via original methodologies for measurements of cycling kinematics using wireless inertial and magnetic measurement systems (IMMSs) and technique analysis of expert rugby union goal kicking using stereophotogrammetry.
Three studies are presented detailing the design and validation of sensor fusion algorithms for IMMS tracking of cycling kinematics. The algorithms utilize a nonlinear complementary filtering structure together with domain constraints related to pendulum and planar
motion. Using stereophotogrammetry to validate the tracking performance, it is shown that these filter adaptations eliminate typical measurement errors caused by continuous and time-varying dynamic accelerations and magnetic field disturbances. The first of the IMMS studies illustrated the use of a functional calibration technique to estimate the radius of rotation of an IMMS attached to the thigh. This technique was shown to reduce IMMS tracking errors per axis to 1°. A detailed assessment of the effect of soft tissue artifact on hip angle measurements is also given, and estimates of hip kinematics in the sagittal plane were accurate to within 1-2°. The following two studies focus on IMMS tracking of crank angles in the presence of severe magnetic interference, which precludes the use of traditional static pose calibrations. Two magnetometer-free algorithms are presented, one not requiring a sensor-to-segment calibration and another utilizing a functional calibration technique. Both methods were found to perform with accuracies of 2-3°. A novel
optical motion capture method for tracking the crank angle was also developed using a two-segment definition.
Three more studies present a novel technique analysis of fifteen professional goal kickers using stereophotogrammetry. The first study investigated the distance and angulation of the individual steps of the run-up as well as foot positioning relative to the tee and found that anthropometry did not play a major role in determining run-up geometry. The second study assessed phase timing, speed and acceleration during the approach and found that this only had a moderate to small association with foot speed at ball contact. The third study reports on rotational alignment of the thorax, pelvis and feet relative to the tee and target and discusses evidence for a tension arc movement strategy in the spine rotation angle. The most important finding in all three studies was high inter-individual variability and low intra-individual variability, which highlights the nonlinear, athlete-specific…
Advisors/Committee Members: Muller, Jacobus Hendrik, Van den Heever, David Jacobus, Stellenbosch University. Faculty of Engineering. Dept. of Mechanical and Mechatronic Engineering..
Subjects/Keywords: Optical motion capture; Passive complimentary filters; Magneto-inertial sensing; Human movement science; UCTD
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Cockroft, S. J. (2015). Novel motion capture methods for sports analysis : case studies of cycling and rugby goal kicking. (Doctoral Dissertation). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/98101
Chicago Manual of Style (16th Edition):
Cockroft, Stephen John. “Novel motion capture methods for sports analysis : case studies of cycling and rugby goal kicking.” 2015. Doctoral Dissertation, Stellenbosch University. Accessed April 18, 2021.
http://hdl.handle.net/10019.1/98101.
MLA Handbook (7th Edition):
Cockroft, Stephen John. “Novel motion capture methods for sports analysis : case studies of cycling and rugby goal kicking.” 2015. Web. 18 Apr 2021.
Vancouver:
Cockroft SJ. Novel motion capture methods for sports analysis : case studies of cycling and rugby goal kicking. [Internet] [Doctoral dissertation]. Stellenbosch University; 2015. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/10019.1/98101.
Council of Science Editors:
Cockroft SJ. Novel motion capture methods for sports analysis : case studies of cycling and rugby goal kicking. [Doctoral Dissertation]. Stellenbosch University; 2015. Available from: http://hdl.handle.net/10019.1/98101
9.
Ghosh, Shramana.
Capturing Human Hand Kinematics for Object Grasping and Manipulation.
Degree: MS, Industrial Engineering, 2013, Texas A&M University
URL: http://hdl.handle.net/1969.1/149611
► The aim of this thesis is to create a low-cost sensor equipped glove using commercially available components that can be used to obtain position, velocity…
(more)
▼ The aim of this thesis is to create a low-cost sensor equipped glove using commercially available components that can be used to obtain position, velocity and acceleration data for individual fingers of a hand within an
optical motion capture environment. Tracking the full degrees of freedoms of the hand and finger motions without any hindrances is a challenging task in
optical motion capture measurements. Attaching markers on every finger and hand joint makes
motion capture systems troublesome due to practical problems such as blind spots and/or obtaining higher derivative
motion constraints, such as velocities and accelerations. To alleviate this, we propose a method to
capture the hand and finger kinematics with a reduced set of
optical markers. Additionally inertial sensors are attached to the fingertips to obtain linear acceleration measurements. For optimal velocity estimation, a Kinematic Kalman Filter (KKF) is implemented and its result is compared to the time derivative of the
Motion Capture System measurement. The higher derivative specifications are related to contact and curvature constraints between the fingers and the grasped object and are later used in formulating the synthesis task for the design of robotic fingers and hands. A preliminary prototype device has been developed to obtain position, velocity and acceleration information of each fingertip by incorporating multiple accelerometers into the basic design of reduced marker set.
Advisors/Committee Members: Banerjee, Amarnath (advisor), Robson, Nina P. (advisor), Buchanan, John J. (committee member).
Subjects/Keywords: Hand Kinematics; Optical Motion Capture; Instrumented Gloves
…most widely used methods to study the motion of human hands is
optical motion capture using… …and studying the kinematics of human hand
motion are optical motion capture [5]… …the most widely used method is optical motion capture
method, which utilizes a number of… …While optical motion capture is one of the most accurate methods available
presently… …fingertips. As mentioned earlier, the
optical motion capture system can track the position of each…
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ghosh, S. (2013). Capturing Human Hand Kinematics for Object Grasping and Manipulation. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/149611
Chicago Manual of Style (16th Edition):
Ghosh, Shramana. “Capturing Human Hand Kinematics for Object Grasping and Manipulation.” 2013. Masters Thesis, Texas A&M University. Accessed April 18, 2021.
http://hdl.handle.net/1969.1/149611.
MLA Handbook (7th Edition):
Ghosh, Shramana. “Capturing Human Hand Kinematics for Object Grasping and Manipulation.” 2013. Web. 18 Apr 2021.
Vancouver:
Ghosh S. Capturing Human Hand Kinematics for Object Grasping and Manipulation. [Internet] [Masters thesis]. Texas A&M University; 2013. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/1969.1/149611.
Council of Science Editors:
Ghosh S. Capturing Human Hand Kinematics for Object Grasping and Manipulation. [Masters Thesis]. Texas A&M University; 2013. Available from: http://hdl.handle.net/1969.1/149611
Swedish University of Agricultural Sciences
10.
Persson Sjödin, Emma.
Evaluation of vertical movement asymmetries in riding horses: relevance to equine orthopaedics.
Degree: 2020, Swedish University of Agricultural Sciences
URL: https://pub.epsilon.slu.se/16718/
► Disorders of the locomotor apparatus are very common in sports horses. Pain and dysfunction associated with these conditions have a negative impact on horse welfare.…
(more)
▼ Disorders of the locomotor apparatus are very common in sports horses. Pain and dysfunction associated with these conditions have a negative impact on horse welfare. The main component in lameness evaluation is detection of vertical movement asymmetries but the inter-rater agreement among veterinarians is low. Therefore, modern methods of detection and quantification of movement asymmetry have been developed.
The aim of this thesis was to help improve equine welfare by providing a better scientific basis for interpretation of movement asymmetries. This could support riders and veterinarians in detecting lameness at an early stage and improve orthopaedic diagnostics.
To investigate a possible association between movement asymmetry and presence of painful orthopaedic conditions, NSAID (meloxicam) treatment was performed in asymmetrically moving, but presumed sound horses. Interestingly, this did not decrease the magnitude of asymmetry. Other reasons for asymmetric movement and the clinical efficacy of treatment with meloxicam in relation to a potentially present pathology therefore need to be addressed.
The influence of the rider’s seating style on vertical movement symmetry in trot was evaluated in 26 horses. ‘Rising trot’ induced systematic changes, the most prominent being a decreased pelvic rise, mimicking push-off lameness in the hindlimb of the diagonal on which the rider was sitting in ‘rising trot’.
The potential of the relationship between the direction of head and withers movement asymmetry parameters to assist in locating the primary lame limb was investigated in horses with induced lameness. The findings were then verified in horses with naturally occurring lameness. The results showed that head and withers movement asymmetry parameters indicate the same forelimb in horses with forelimb lameness, but indicate opposite forelimbs in horses with hindlimb lameness and compensatory head movement asymmetry.
The results presented in this thesis extend existing knowledge about the origin and significance of movement asymmetries in riding horses and compensatory mechanisms in lame horses
Subjects/Keywords: compensatory lameness; withers asymmetry; optical motion capture; inertial measurement units; NSAID; rising trot; rider; lameness; equine; kinematics
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Persson Sjödin, E. (2020). Evaluation of vertical movement asymmetries in riding horses: relevance to equine orthopaedics. (Doctoral Dissertation). Swedish University of Agricultural Sciences. Retrieved from https://pub.epsilon.slu.se/16718/
Chicago Manual of Style (16th Edition):
Persson Sjödin, Emma. “Evaluation of vertical movement asymmetries in riding horses: relevance to equine orthopaedics.” 2020. Doctoral Dissertation, Swedish University of Agricultural Sciences. Accessed April 18, 2021.
https://pub.epsilon.slu.se/16718/.
MLA Handbook (7th Edition):
Persson Sjödin, Emma. “Evaluation of vertical movement asymmetries in riding horses: relevance to equine orthopaedics.” 2020. Web. 18 Apr 2021.
Vancouver:
Persson Sjödin E. Evaluation of vertical movement asymmetries in riding horses: relevance to equine orthopaedics. [Internet] [Doctoral dissertation]. Swedish University of Agricultural Sciences; 2020. [cited 2021 Apr 18].
Available from: https://pub.epsilon.slu.se/16718/.
Council of Science Editors:
Persson Sjödin E. Evaluation of vertical movement asymmetries in riding horses: relevance to equine orthopaedics. [Doctoral Dissertation]. Swedish University of Agricultural Sciences; 2020. Available from: https://pub.epsilon.slu.se/16718/
Université de Lorraine
11.
Dib, Abdallah.
Vers un système de capture du mouvement humain en 3D pour un robot mobile évoluant dans un environnement encombré : Toward a motion capture system in 3D for a mobile robot moving in a cluttered environment.
Degree: Docteur es, Informatique, 2016, Université de Lorraine
URL: http://www.theses.fr/2016LORR0045
► Dans cette thèse nous intéressons à la conception d'un robot mobile capable d’analyser le comportement et le mouvement d’une personne en environnement intérieur et encombré,…
(more)
▼ Dans cette thèse nous intéressons à la conception d'un robot mobile capable d’analyser le comportement et le mouvement d’une personne en environnement intérieur et encombré, par exemple le domicile d’une personne âgée. Plus précisément, notre objectif est de doter le robot des capacités de perception visuelle de la posture humaine de façon à mieux maîtriser certaines situations qui nécessitent de comprendre l’intention des personnes avec lesquelles le robot interagit, ou encore de détecter des situations à risques comme les chutes ou encore d’analyser les capacités motrices des personnes dont il a la garde. Le suivi de la posture dans un environnement dynamique et encombré relève plusieurs défis notamment l'apprentissage en continue du fond de la scène et l'extraction la silhouette qui peut être partiellement observable lorsque la personne est dans des endroits occultés. Ces difficultés rendent le suivi de la posture une tâche difficile. La majorité des méthodes existantes, supposent que la scène est statique et la personne est toujours visible en entier. Ces approches ne sont pas adaptées pour fonctionner dans des conditions réelles. Nous proposons, dans cette thèse, un nouveau système de suivi capable de suivre la posture de la personne dans ces conditions réelles. Notre approche utilise une grille d'occupation avec un modèle de Markov caché pour apprendre en continu l'évolution de la scène et d'extraire la silhouette, ensuite un algorithme de filtrage particulaire hiérarchique est utilisé pour reconstruire la posture. Nous proposons aussi un nouvel algorithme de gestion d'occlusion capable d'identifier et d'exclure les parties du corps cachées du processus de l'estimation de la pose. Finalement, nous avons proposé une base de données contenant des images RGB-D avec la vérité-terrain dans le but d'établir une nouvelle référence pour l'évaluation des systèmes de capture de mouvement dans un environnement réel avec occlusions. La vérité-terrain est obtenue à partir d'un système de capture de mouvement à base de marqueur de haute précision avec huit caméras infrarouges. L'ensemble des données est disponible en ligne. La deuxième contribution de cette thèse, est le développement d'une méthode de localisation visuelle à partir d'une caméra du type RGB-D montée sur un robot qui se déplace dans un environnement dynamique. En effet, le système de capture de mouvement que nous avons développé doit équiper un robot se déplaçant dans une scène. Ainsi, l'estimation de mouvement du robot est importante pour garantir une extraction de silhouette correcte pour le suivi. La difficulté majeure de la localisation d'une caméra dans un environnement dynamique, est que les objets mobiles de la scène induisent un mouvement supplémentaire qui génère des pixels aberrants. Ces pixels doivent être exclus du processus de l'estimation du mouvement de la caméra. Nous proposons ainsi une extension de la méthode de localisation dense basée sur le flux optique pour isoler les pixels aberrants en utilisant l'algorithme de RANSAC.
In this thesis…
Advisors/Committee Members: Charpillet, François (thesis director).
Subjects/Keywords: Capture de mouvement; Odométrie visuelle; Filtrage particulaire; Modèle de Markov Caché; Caméra RGB-D; Motion capture; Visual odometry; Particle filter; Hidden Markov Model; RGB-D camera; Optical flow; 681.75; 006.33
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Dib, A. (2016). Vers un système de capture du mouvement humain en 3D pour un robot mobile évoluant dans un environnement encombré : Toward a motion capture system in 3D for a mobile robot moving in a cluttered environment. (Doctoral Dissertation). Université de Lorraine. Retrieved from http://www.theses.fr/2016LORR0045
Chicago Manual of Style (16th Edition):
Dib, Abdallah. “Vers un système de capture du mouvement humain en 3D pour un robot mobile évoluant dans un environnement encombré : Toward a motion capture system in 3D for a mobile robot moving in a cluttered environment.” 2016. Doctoral Dissertation, Université de Lorraine. Accessed April 18, 2021.
http://www.theses.fr/2016LORR0045.
MLA Handbook (7th Edition):
Dib, Abdallah. “Vers un système de capture du mouvement humain en 3D pour un robot mobile évoluant dans un environnement encombré : Toward a motion capture system in 3D for a mobile robot moving in a cluttered environment.” 2016. Web. 18 Apr 2021.
Vancouver:
Dib A. Vers un système de capture du mouvement humain en 3D pour un robot mobile évoluant dans un environnement encombré : Toward a motion capture system in 3D for a mobile robot moving in a cluttered environment. [Internet] [Doctoral dissertation]. Université de Lorraine; 2016. [cited 2021 Apr 18].
Available from: http://www.theses.fr/2016LORR0045.
Council of Science Editors:
Dib A. Vers un système de capture du mouvement humain en 3D pour un robot mobile évoluant dans un environnement encombré : Toward a motion capture system in 3D for a mobile robot moving in a cluttered environment. [Doctoral Dissertation]. Université de Lorraine; 2016. Available from: http://www.theses.fr/2016LORR0045
12.
Motta, Everton Simões da [UNESP].
Desenvolvimento de um método para a captura de movimentos humanos usando uma câmera RGB-D.
Degree: 2016, Universidade Estadual Paulista (UNESP)
URL: http://hdl.handle.net/11449/147097
► Submitted by EVERTON SIMÕES DA MOTTA ([email protected]) on 2017-01-05T13:08:55Z No. of bitstreams: 1 DissertacaoFinalCorrigida-v5.pdf: 7335404 bytes, checksum: fa4ba2ff69cd4d2dd72b1b5cb475111b (MD5)
Approved for entry into archive by…
(more)
▼ Submitted by EVERTON SIMÕES DA MOTTA ([email protected]) on 2017-01-05T13:08:55Z No. of bitstreams: 1 DissertacaoFinalCorrigida-v5.pdf: 7335404 bytes, checksum: fa4ba2ff69cd4d2dd72b1b5cb475111b (MD5)
Approved for entry into archive by Juliano Benedito Ferreira ([email protected]) on 2017-01-09T17:01:51Z (GMT) No. of bitstreams: 1 motta_es_me_rcla.pdf: 7335404 bytes, checksum: fa4ba2ff69cd4d2dd72b1b5cb475111b (MD5)
Made available in DSpace on 2017-01-09T17:01:51Z (GMT). No. of bitstreams: 1 motta_es_me_rcla.pdf: 7335404 bytes, checksum: fa4ba2ff69cd4d2dd72b1b5cb475111b (MD5) Previous issue date: 2016-12-22
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Sistemas de captura de movimentos humanos vêm sendo cada dia mais estudados, tanto pela área de Visão Computacional, quanto por grandes empresas do setor de entretenimento. São sistemas capazes de rastrear a posição e orientação das articulações do
corpo e sua trajetória no espaço durante um intervalo de tempo. São utilizados em diversas aplicações, tais como em jogos digitais, animação de personagens virtuais para cinema e televisão, reconhecimento gestual, medicina de reabilitação, e outras. O surgimento de novos dispositivos de baixo custo e boa resolução que fornecem informações de profundidade, tem motivado novas pesquisas para a utilização dos mesmos. No entanto, sistemas que se baseiam somente em informações de profundidade (geralmente sistemas em tempo real) não apresentam uma alta acurácia no rastreamento do movimento. Considerando este contexto, o presente trabalho teve como objetivo principal, o desenvolvimento de um método de captura de movimentos humanos utilizando único sensor RGB-D, combinando informações de textura da imagem e de profundidade, que são associados a um esqueleto virtual, conseguindo-se uma maior acurácia em comparação com os métodos baseados apenas em profundidade. Tal método não visa aplicações
de tempo real, mas sim, uma maior acurácia em comparação com os métodos baseados apenas em profundidade.
Human motion capture systems are being increasingly studied, in the area of computer vision and also by major entertainment industries. These systems are able to track the position and orientation of joints of the body and its trajectory in space over a period of time. They are used in various applications such as digital games, animation of virtual characters for film and television, gesture recognition, medical rehabilitation, etc. The emergence of new low-cost and good resolution devices that provide depth information has prompted new research. However, systems that are based only on depth information (usually real-time systems) do not present a high accuracy in movement tracking. Considering this context, this thesis project presents the development of a method for capturing human movements using only one RGB-D sensor, combining captured texture from the image and depth
information in order to obtain a higher accuracy, which are associated with a virtual…
Advisors/Committee Members: Universidade Estadual Paulista (UNESP), Sementille, Antonio Carlos [UNESP].
Subjects/Keywords: Captura de movimentos; Câmeras RGB-D; Sistemas ópticos de captura; Esqueletos virtuais; Motion capture; RGB-D cameras; Optical capture systems; Virtual skeletons
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Motta, E. S. d. [. (2016). Desenvolvimento de um método para a captura de movimentos humanos usando uma câmera RGB-D. (Masters Thesis). Universidade Estadual Paulista (UNESP). Retrieved from http://hdl.handle.net/11449/147097
Chicago Manual of Style (16th Edition):
Motta, Everton Simões da [UNESP]. “Desenvolvimento de um método para a captura de movimentos humanos usando uma câmera RGB-D.” 2016. Masters Thesis, Universidade Estadual Paulista (UNESP). Accessed April 18, 2021.
http://hdl.handle.net/11449/147097.
MLA Handbook (7th Edition):
Motta, Everton Simões da [UNESP]. “Desenvolvimento de um método para a captura de movimentos humanos usando uma câmera RGB-D.” 2016. Web. 18 Apr 2021.
Vancouver:
Motta ESd[. Desenvolvimento de um método para a captura de movimentos humanos usando uma câmera RGB-D. [Internet] [Masters thesis]. Universidade Estadual Paulista (UNESP); 2016. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/11449/147097.
Council of Science Editors:
Motta ESd[. Desenvolvimento de um método para a captura de movimentos humanos usando uma câmera RGB-D. [Masters Thesis]. Universidade Estadual Paulista (UNESP); 2016. Available from: http://hdl.handle.net/11449/147097
University of Waterloo
13.
Laschowski, Brock.
Biomechanical Modelling of Paralympic Wheelchair Curling.
Degree: 2016, University of Waterloo
URL: http://hdl.handle.net/10012/10722
► This research represents the first documented investigation into the biomechanics and neural motor control of Paralympic wheelchair curling. A multibody biomechanical model of the wheelchair…
(more)
▼ This research represents the first documented investigation into the biomechanics and neural motor control of Paralympic wheelchair curling. A multibody biomechanical model of the wheelchair curling delivery was developed in reference to a Team Canada Paralympic athlete with a spinal cord injury. Subject-specific body segment parameters were quantified via dual-energy x-ray absorptiometry. The angular joint kinematics throughout the wheelchair curling delivery were experimentally measured using an inertial measurement unit system; the translational kinematics of the curling stone were additionally evaluated with optical motion capture. The experimental kinematics were optimized to satisfy the kinematic constraints of the multibody biomechanical model. The optimized kinematics were subsequently used to compute the resultant joint moments through inverse dynamics analysis. The neural motor control of the Paralympic athlete was modeled using forward dynamic optimization. The predicted kinematics from different optimization objective functions were compared with those experimentally measured throughout the wheelchair curling delivery. Of the optimization objective functions under consideration, minimizing angular joint accelerations resulted in the most accurate predictions of the kinematic trajectories and the shortest optimization computation time. The implications of these findings are discussed in relation to musculoskeletal modeling and optimal equipment design through predictive simulation.
Subjects/Keywords: Body Segment Parameters; Dual-Energy X-Ray Absorptiometry; Inertial Measurement Units; Optical Motion Capture; Kinematic Constraints; Inverse Dynamics Analysis; Neural Motor Control; Forward Dynamic Optimization; Paralympic Sport
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Laschowski, B. (2016). Biomechanical Modelling of Paralympic Wheelchair Curling. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/10722
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Laschowski, Brock. “Biomechanical Modelling of Paralympic Wheelchair Curling.” 2016. Thesis, University of Waterloo. Accessed April 18, 2021.
http://hdl.handle.net/10012/10722.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Laschowski, Brock. “Biomechanical Modelling of Paralympic Wheelchair Curling.” 2016. Web. 18 Apr 2021.
Vancouver:
Laschowski B. Biomechanical Modelling of Paralympic Wheelchair Curling. [Internet] [Thesis]. University of Waterloo; 2016. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/10012/10722.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Laschowski B. Biomechanical Modelling of Paralympic Wheelchair Curling. [Thesis]. University of Waterloo; 2016. Available from: http://hdl.handle.net/10012/10722
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
The Ohio State University
14.
Brush, Ursula Jane.
Design and Validation of an Intensity-Based POF Bend Sensor
Applications in Measuring Three-Dimensional Trunk Motion.
Degree: MS, Biomedical Engineering, 2010, The Ohio State University
URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1269456459
► Many efforts have been put forth to better understand proper trunk posture while in motion. Such efforts include wearable devices such as the Lumbar…
(more)
▼ Many efforts have been put forth to better
understand proper trunk posture while in
motion. Such efforts
include wearable devices such as the Lumbar
Motion Monitor that
track the three dimensional
motion of the trunk over time.37 Often
these devices are prohibitively expensive, heavy, and cumbersome
for subjects attempting to move naturally for sports or
biomechanics research. Recent developments in plastic
optical fiber
(POF) quality have made it possible to build an inexpensive bend
sensor for applications in measuring trunk
motion on the job.6 An
intensity-based POF bend sensor is not only lightweight,
noninvasive, and simple to build, but provides a signal with almost
no processing requirements. The purpose of this thesis is to
fabricate an inexpensive, wearable POF bend sensor suitable for
dynamic
motion and to test its use for recording the
three-dimensional
motion of the trunk. The
fabrication of a POF bend sensor vest is described as well as its
validation with a Vicon passive
optical motion capture system.
Overall, the lateral and sagittal vest data correlated with the
Vicon system to within ±3.8° of average curvature or 11.5% or less
of the total range of
motion for each dimension. While jogging RMS
error increased to ±6.7° when compared to the Vicon system, the
average range of
motion captured from the vest correlated to within
±2.2° of the Vicon range of
motion data. Preliminary work was also
accomplished for twisting
motion with an average percent RMS error
of 13.2% for range of
motion trials. Considering
the low-cost and non-invasive nature of the POF bend sensor, these
results show promise for using this sensor in a variety of
applications. These applications include feedback monitoring of
motion for injury prevention or sports performance or for
assessment of lifting techniques in the workplace. Future work
would involve characterizing the reliability of the sensor over
long periods of time as well as capturing all three dimensions of
motion simultaneously.
Advisors/Committee Members: Chaudhari, Ajit (Advisor).
Subjects/Keywords: Biomedical Research; Engineering; motion capture; biomechanics; posture; plastic optical fiber
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Brush, U. J. (2010). Design and Validation of an Intensity-Based POF Bend Sensor
Applications in Measuring Three-Dimensional Trunk Motion. (Masters Thesis). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1269456459
Chicago Manual of Style (16th Edition):
Brush, Ursula Jane. “Design and Validation of an Intensity-Based POF Bend Sensor
Applications in Measuring Three-Dimensional Trunk Motion.” 2010. Masters Thesis, The Ohio State University. Accessed April 18, 2021.
http://rave.ohiolink.edu/etdc/view?acc_num=osu1269456459.
MLA Handbook (7th Edition):
Brush, Ursula Jane. “Design and Validation of an Intensity-Based POF Bend Sensor
Applications in Measuring Three-Dimensional Trunk Motion.” 2010. Web. 18 Apr 2021.
Vancouver:
Brush UJ. Design and Validation of an Intensity-Based POF Bend Sensor
Applications in Measuring Three-Dimensional Trunk Motion. [Internet] [Masters thesis]. The Ohio State University; 2010. [cited 2021 Apr 18].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1269456459.
Council of Science Editors:
Brush UJ. Design and Validation of an Intensity-Based POF Bend Sensor
Applications in Measuring Three-Dimensional Trunk Motion. [Masters Thesis]. The Ohio State University; 2010. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1269456459
15.
Serra Bragança, Filipe Manuel.
Where art and science meet. Empowering the equine clinician’s eye by advanced quantitative gait analysis.
Degree: 2020, University Utrecht
URL: https://dspace.library.uu.nl/handle/1874/399589
;
URN:NBN:NL:UI:10-1874-399589
;
10.33540/342
;
1874/399589
;
urn:isbn:9789493184374
;
URN:NBN:NL:UI:10-1874-399589
;
https://dspace.library.uu.nl/handle/1874/399589
► The horse has been domesticated by humans for the amazing capacities of its locomotor system and ever since virtually all purposes for which horses have…
(more)
▼ The horse has been domesticated by humans for the amazing capacities of its locomotor system and ever since virtually all purposes for which horses have been kept were related to this athletic potential. For many years, researchers have been studying the locomotion of horses but these studies have been limited due to the technology available.
The recent introduction of reliable and portable gait analysis systems based on microelectromechanical systems (MEMS) technology, which, thanks to the quick technological developments tend to become cheaper allowed for a glorious comeback of the research in equine locomotion. This comeback was also due to the realization of the low interobserver agreement (i.e., disagreement between observers when visually accessing the locomotion of horses) questioning the scientific validity of the “classic” subjective lameness perception by the clinician.
In this thesis, we started with a literature review of the available scientific evidence to support modern gait analysis in horses. This is followed by a section on technical developments and validation studies for the daily application of gait analysis and ending with some chapters on the clinical application of gait analysis for studies on lameness and general locomotion. In resume, this thesis highlights the need for quantitative gait analysis in horses and provides scientific evidence for technical solutions that can be used by veterinarians and researchers.
Advisors/Committee Members: Weeren, P.R. van, Roepstorff, L., Rhodin, M., Weishaupt, M..
Subjects/Keywords: Horse; gait analysis; lameness; optical motion capture; IMU; sensor; agreement
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Serra Bragança, F. M. (2020). Where art and science meet. Empowering the equine clinician’s eye by advanced quantitative gait analysis. (Doctoral Dissertation). University Utrecht. Retrieved from https://dspace.library.uu.nl/handle/1874/399589 ; URN:NBN:NL:UI:10-1874-399589 ; 10.33540/342 ; 1874/399589 ; urn:isbn:9789493184374 ; URN:NBN:NL:UI:10-1874-399589 ; https://dspace.library.uu.nl/handle/1874/399589
Chicago Manual of Style (16th Edition):
Serra Bragança, Filipe Manuel. “Where art and science meet. Empowering the equine clinician’s eye by advanced quantitative gait analysis.” 2020. Doctoral Dissertation, University Utrecht. Accessed April 18, 2021.
https://dspace.library.uu.nl/handle/1874/399589 ; URN:NBN:NL:UI:10-1874-399589 ; 10.33540/342 ; 1874/399589 ; urn:isbn:9789493184374 ; URN:NBN:NL:UI:10-1874-399589 ; https://dspace.library.uu.nl/handle/1874/399589.
MLA Handbook (7th Edition):
Serra Bragança, Filipe Manuel. “Where art and science meet. Empowering the equine clinician’s eye by advanced quantitative gait analysis.” 2020. Web. 18 Apr 2021.
Vancouver:
Serra Bragança FM. Where art and science meet. Empowering the equine clinician’s eye by advanced quantitative gait analysis. [Internet] [Doctoral dissertation]. University Utrecht; 2020. [cited 2021 Apr 18].
Available from: https://dspace.library.uu.nl/handle/1874/399589 ; URN:NBN:NL:UI:10-1874-399589 ; 10.33540/342 ; 1874/399589 ; urn:isbn:9789493184374 ; URN:NBN:NL:UI:10-1874-399589 ; https://dspace.library.uu.nl/handle/1874/399589.
Council of Science Editors:
Serra Bragança FM. Where art and science meet. Empowering the equine clinician’s eye by advanced quantitative gait analysis. [Doctoral Dissertation]. University Utrecht; 2020. Available from: https://dspace.library.uu.nl/handle/1874/399589 ; URN:NBN:NL:UI:10-1874-399589 ; 10.33540/342 ; 1874/399589 ; urn:isbn:9789493184374 ; URN:NBN:NL:UI:10-1874-399589 ; https://dspace.library.uu.nl/handle/1874/399589
16.
Daniel Antônio Furtado.
Um método computacional livre de modelo esquelético para rastreamento e reconstrução em tempo real de múltiplos marcadores em sistemas de captura de movimento ópticos.
Degree: 2013, Federal University of Uberlândia
URL: http://www.bdtd.ufu.br//tde_busca/arquivo.php?codArquivo=4798
► Nos últimos anos, os sistemas de captura de movimento vêm sendo aplicados em diversas áreas do conhecimento. A animação de personagens virtuais na indústria cinematográfica…
(more)
▼ Nos últimos anos, os sistemas de captura de movimento vêm sendo aplicados em diversas áreas do conhecimento. A animação de personagens virtuais na indústria cinematográfica e a avaliação dos movimentos corporais em áreas da saúde e nos esportes são apenas algumas de suas diversas aplicações. Dos diferentes tipos de sistemas de captura de movimento existentes, os sistemas ópticos baseados em marcadores são reconhecidos como os mais avançados e os que oferecem níveis de precisão e flexibilidade suficientes para suportar o maior número de aplicações. Todavia, esses sistemas estão também entre os mais caros, devido ao alto preço dos elementos de hardware e software. As propostas de baixo custo existentes possuem limitações com relação à precisão, flexibilidade, automatismo e/ou velocidade de processamento, que as tornam inviáveis para uma considerável parcela de aplicações. Neste contexto, esta pesquisa propõe um método computacional completo, considerando as principais deficiências dos trabalhos existentes, para rastrear e reconstruir as trajetórias de uma nuvem de marcadores reflexivos independentes, em tempo real, utilizando múltiplas câmeras especializadas de infravermelho. A técnica proposta envolve um conjunto de algoritmos relativamente simples, os quais integram três etapas principais. Estas etapas realizam o rastreamento e o casamento dos pontos nas imagens e a reconstrução tridimensional das trajetórias dos marcadores. O método foi implementado em software e testado utilizando uma coleção de oito câmeras de infravermelho. Como referência, utilizou-se o software Arena e o sistema OptiTrack comercializado pela empresa NaturalPoint. Nos experimentos conduzidos, a técnica foi capaz de rastrear automaticamente um conjunto de 38 marcadores em tempo real. Comparada ao software comercial Arena, a técnica revelou uma melhor capacidade de rastreamento automático dos marcadores e ainda reconstruiu trajetórias com menor incidência de ruídos. O método proposto deve incentivar pesquisadores e empresas a desenvolverem sistemas de captura de movimento de alto desempenho e com menor custo.
In the past years, motion capture has been widely used in many application areas. In movies and games, motion capture is frequently employed to animate virtual characters. In sports, motion capture and analyses focus on optimizing movements of athletes and injury prevention. More applications areas include medicine, military and engineering. Motion capture can be accomplished by several technologies. However, optical marker-based systems are considered the gold standard of the motion capture field. They can offer high precision levels and flexibility to support most applications, but they are also the most expensive systems due to high costs of hardware and software. Although low-cost optical systems have been proposed in the last decade, these systems cannot provide enough precision, flexibility, automatism and/or real-time capability for a number of applications. In this context, the present research aims to develop a complete and high…
Advisors/Committee Members: Adriano Alves Pereira, Sílvio Soares dos Santos, César Ferreira Amorim, Marcus Fraga Vieira.
Subjects/Keywords: Sistemas de captura de movimento ópticos; Marcadores reflexivos; Reconstrução 3D; Visão computacional; ENGENHARIA ELETRICA; Sistemas de captura de movimento; Movimento - Simulação por computador; Imagem tridimensional; Optical motion capture systems; Reflective markers; 3D reconstruction; Computer vision
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Furtado, D. A. (2013). Um método computacional livre de modelo esquelético para rastreamento e reconstrução em tempo real de múltiplos marcadores em sistemas de captura de movimento ópticos. (Thesis). Federal University of Uberlândia. Retrieved from http://www.bdtd.ufu.br//tde_busca/arquivo.php?codArquivo=4798
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Furtado, Daniel Antônio. “Um método computacional livre de modelo esquelético para rastreamento e reconstrução em tempo real de múltiplos marcadores em sistemas de captura de movimento ópticos.” 2013. Thesis, Federal University of Uberlândia. Accessed April 18, 2021.
http://www.bdtd.ufu.br//tde_busca/arquivo.php?codArquivo=4798.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Furtado, Daniel Antônio. “Um método computacional livre de modelo esquelético para rastreamento e reconstrução em tempo real de múltiplos marcadores em sistemas de captura de movimento ópticos.” 2013. Web. 18 Apr 2021.
Vancouver:
Furtado DA. Um método computacional livre de modelo esquelético para rastreamento e reconstrução em tempo real de múltiplos marcadores em sistemas de captura de movimento ópticos. [Internet] [Thesis]. Federal University of Uberlândia; 2013. [cited 2021 Apr 18].
Available from: http://www.bdtd.ufu.br//tde_busca/arquivo.php?codArquivo=4798.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Furtado DA. Um método computacional livre de modelo esquelético para rastreamento e reconstrução em tempo real de múltiplos marcadores em sistemas de captura de movimento ópticos. [Thesis]. Federal University of Uberlândia; 2013. Available from: http://www.bdtd.ufu.br//tde_busca/arquivo.php?codArquivo=4798
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
17.
Furtado, Daniel Antônio.
Um método computacional livre de modelo esquelético para rastreamento e reconstrução em tempo real de múltiplos marcadores em sistemas de captura de movimento ópticos.
Degree: 2013, Federal University of Uberlândia
URL: https://repositorio.ufu.br/handle/123456789/14320
► Universidade de Uberaba
In the past years, motion capture has been widely used in many application areas. In movies and games, motion capture is frequently…
(more)
▼ Universidade de Uberaba
In the past years, motion capture has been widely used in many application areas. In movies and games, motion capture is frequently employed to animate virtual characters. In sports, motion capture and analyses focus on optimizing movements of athletes and injury prevention. More applications areas include medicine, military and engineering. Motion capture can be accomplished by several technologies. However, optical marker-based systems are considered the gold standard of the motion capture field. They can offer high precision levels and flexibility to support most applications, but they are also the most expensive systems due to high costs of hardware and software. Although low-cost optical systems have been proposed in the last decade, these systems cannot provide enough precision, flexibility, automatism and/or real-time capability for a number of applications. In this context, the present research aims to develop a
complete and high precision approach to track and reconstruct a cloud of independent markers, in real time, using multiple infrared specialized cameras. The proposed method includes a set of relatively simple algorithms which are part of a three-stage procedure. These stages work on the tracking and matching of the image points and spatial reconstruction of the marker trajectories. In order to evaluate the method, a prototype software has been implemented and experiments were performed using a pack of eight infrared cameras. The NaturalPoint s OptiTrack system, which includes the Arena software, was used as a reference system. In the experiments, the proposed technique was able to successfully track and reconstruct a set of 38 reflective markers in real time. When compared to the commercial software, the method performed better for automatically maker tracking. In addition, the reconstructed trajectories produced by the prototype software were far less contaminated by noise than the
trajectories generated by the Arena software. The proposed method should encourage the development of new high performance systems at a more affordable price.
Nos últimos anos, os sistemas de captura de movimento vêm sendo aplicados em diversas áreas do conhecimento. A animação de personagens virtuais na indústria cinematográfica e a avaliação dos movimentos corporais em áreas da saúde e nos esportes são apenas algumas de suas diversas aplicações. Dos diferentes tipos de sistemas de captura de movimento existentes, os sistemas ópticos baseados em marcadores são reconhecidos como os mais avançados e os que oferecem níveis de precisão e flexibilidade suficientes para suportar o maior número de aplicações. Todavia, esses sistemas estão também entre os mais caros, devido ao alto preço dos elementos de hardware e software. As propostas de baixo custo existentes possuem limitações com relação à precisão, flexibilidade, automatismo e/ou velocidade de processamento, que as tornam
inviáveis para uma considerável parcela de aplicações. Neste contexto, esta pesquisa propõe um método computacional…
Advisors/Committee Members: Pereira, Adriano Alves, Santos, Sílvio Soares dos, Vieira, Marcus Fraga, Amorim, César Ferreira.
Subjects/Keywords: Sistemas de captura de movimento ópticos; Marcadores reflexivos; Reconstrução 3D; Visão computacional; Sistemas de captura de movimento; Movimento - Simulação por computador; Imagem tridimensional; Optical motion capture systems; Reflective markers; 3D Reconstruction; Computer vision; CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Furtado, D. A. (2013). Um método computacional livre de modelo esquelético para rastreamento e reconstrução em tempo real de múltiplos marcadores em sistemas de captura de movimento ópticos. (Doctoral Dissertation). Federal University of Uberlândia. Retrieved from https://repositorio.ufu.br/handle/123456789/14320
Chicago Manual of Style (16th Edition):
Furtado, Daniel Antônio. “Um método computacional livre de modelo esquelético para rastreamento e reconstrução em tempo real de múltiplos marcadores em sistemas de captura de movimento ópticos.” 2013. Doctoral Dissertation, Federal University of Uberlândia. Accessed April 18, 2021.
https://repositorio.ufu.br/handle/123456789/14320.
MLA Handbook (7th Edition):
Furtado, Daniel Antônio. “Um método computacional livre de modelo esquelético para rastreamento e reconstrução em tempo real de múltiplos marcadores em sistemas de captura de movimento ópticos.” 2013. Web. 18 Apr 2021.
Vancouver:
Furtado DA. Um método computacional livre de modelo esquelético para rastreamento e reconstrução em tempo real de múltiplos marcadores em sistemas de captura de movimento ópticos. [Internet] [Doctoral dissertation]. Federal University of Uberlândia; 2013. [cited 2021 Apr 18].
Available from: https://repositorio.ufu.br/handle/123456789/14320.
Council of Science Editors:
Furtado DA. Um método computacional livre de modelo esquelético para rastreamento e reconstrução em tempo real de múltiplos marcadores em sistemas de captura de movimento ópticos. [Doctoral Dissertation]. Federal University of Uberlândia; 2013. Available from: https://repositorio.ufu.br/handle/123456789/14320
18.
Yoder, Steven J.
Occupant Response Metrics and Their Applicability to a Roll
Simulator.
Degree: MS, Mechanical Engineering, 2011, The Ohio State University
URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1322625198
► Data obtained by the Consumer Product Safety Commission (CPSC) has led to increased concerns regarding the safety of recreational off-highway vehicles (ROVs). As ROVs are…
(more)
▼ Data obtained by the Consumer Product Safety
Commission (CPSC) has led to increased concerns regarding the
safety of recreational off-highway vehicles (ROVs). As ROVs are a
relatively new class of vehicle, meaningful tools for the
evaluation of the effects and performance of occupant protection
structures (OPS) and roll-over protection structures (ROPS) have
not yet been established. In order to provide a system for the
examination of occupant kinematics and the effectiveness of OPS,
SEA Limited has developed and built the Roll Simulator. An initial
validation of the Roll Simulator has been accomplished based on
vehicle dynamics; however, evaluation of occupant kinematics
requires the implementation of a suitable occupant response
tracking system. This work examines the suitability of two
non-contact systems, video
capture and a three-dimensional
optical
motion capture system (OMCS), and compares these systems to a
string potentiometer system which provides a baseline measurement.
Additionally, a preliminary comparison of occupant responses
generated by the Roll Simulator to occupant responses obtained
through autonomous roll testing is presented. An inertia measuring
unit (IMU) based tracking methodology is considered, but ultimately
abandoned due to equipment short comings. Both the video system and
the OMCS are found to provide adequate accuracy in tracking
kinematic response of the ATD. Characteristics which define the
suitability of these systems are presented. The Roll Simulator is
found to reproduce vehicle and occupant responses from real-world
autonomous testing with a high level of agreement.
Advisors/Committee Members: Guenther, Dennis (Advisor).
Subjects/Keywords: Biomechanics; Engineering; Mechanical Engineering; recreational off-highway vehicle; ROV; occupant response tracking; optical motion capture; roll simulator: string potentiometer
…29
3.4 Roll Simulator Optical Motion Capture Data… …61
4.5 Optical Motion Capture System… …rotations used to
transform optical motion capture system data are shown, and their implementation… …of Camera Mount
Optical Motion Capture System
A Motion Analysis Hawk Digital Real Time… …System was also used as means of
tracking ATD response. This optical motion capture system…
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Yoder, S. J. (2011). Occupant Response Metrics and Their Applicability to a Roll
Simulator. (Masters Thesis). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1322625198
Chicago Manual of Style (16th Edition):
Yoder, Steven J. “Occupant Response Metrics and Their Applicability to a Roll
Simulator.” 2011. Masters Thesis, The Ohio State University. Accessed April 18, 2021.
http://rave.ohiolink.edu/etdc/view?acc_num=osu1322625198.
MLA Handbook (7th Edition):
Yoder, Steven J. “Occupant Response Metrics and Their Applicability to a Roll
Simulator.” 2011. Web. 18 Apr 2021.
Vancouver:
Yoder SJ. Occupant Response Metrics and Their Applicability to a Roll
Simulator. [Internet] [Masters thesis]. The Ohio State University; 2011. [cited 2021 Apr 18].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1322625198.
Council of Science Editors:
Yoder SJ. Occupant Response Metrics and Their Applicability to a Roll
Simulator. [Masters Thesis]. The Ohio State University; 2011. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1322625198
19.
Jalkebo, Charlotte.
Placement of Controls in Construction Equipment Using Operators´Sitting Postures : Process and Recommendations.
Degree: The Institute of Technology, 2014, Linköping UniversityLinköping University
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-108980
► An ergonomically designed work environment may decrease work related musculoskeletal disorders, lead to less sick leaves and increase production time for operators and companies…
(more)
▼ An ergonomically designed work environment may decrease work related musculoskeletal disorders, lead to less sick leaves and increase production time for operators and companies all around the world. Volvo Construction Equipment wants to deepen the knowledge and investigate more carefully how operators are actually sitting whilst operating the machines, how this affects placement of controls and furthermore optimize controls placements accordingly. The purpose is to enhance their product development process by suggesting guidelines for control placement with improved ergonomics based on operators’ sitting postures. The goal is to deliver a process which identifies and transfers sitting postures to RAMSIS and uses them for control placement recommendations in the cab and operator environments. Delimitations concerns: physical ergonomics, 80% usability of the resulted process on the machine types, and the level of detail for controls and their placements. Research, analysis, interviews, test driving of machines, video recordings of operators and the ergonomic software RAMSIS has served as base for analysis. The analysis led to (i) the conclusion that sitting postures affect optimal ergonomic placement of controls, though not ISO-standards, (ii) the conclusion that RAMSIS heavy truck postures does not seem to correspond to Volvo CE’s operators’ sitting postures and (iii) and to an advanced engineering project process suitable for all machine types and applicable in the product development process. The result can also be used for other machines than construction equipment. The resulted process consists of three independent sub-processes with step by step explanations and recommendations of; (i) what information that needs to be gathered, (ii) how to identify and transfer sitting postures into RAMSIS, (iii) how to use RAMSIS to create e design aid for recommended control placement. The thesis also contains additional enhancements to Volvo CE’s product development process with focus on ergonomics. A conclusion is that the use of motion capture could not be verified to work for Volvo Construction Equipment, though it was verified that if motion capture works, the process works. Another conclusion is that the suggested body landmarks not could be verified that they are all needed for this purpose except for those needed for control placement. Though they are based on previous sitting posture identification in vehicles and only those that also occur in RAMSIS are recommended, and therefore they can be used. This thesis also questions the most important parameters for interior vehicle design (hip- and eye locations) and suggests that shoulder locations are just as important. The thesis concluded five parameters for control categorization, and added seven categories in addition to those mentioned in the ISO-standards. Other contradictions and loopholes in the ISO-standards were identified, highlighted and discussed. Suggestions for improving…
Subjects/Keywords: Motion capture; controls; placement; posture identification; construction equipment; operator environment; volvo ce; depth sensor; inertial; optical; zone of reach; zone of comfort; H-point; SIP; Seat index point; product development; ergonomics; Work Related Musculoskeletal Disorders; Human Machine Interaction; HMI; WRMD; Anthropometry; Catia; RAMSIS; GEometric; Kinematic; backhoe loader; wheel loader; articulated hauler; excavator; Faro-Arm; CMM; Skeleton points; skin points; sitting posture; operating posture; categorization; V model; visual fields; percentile; road condition; skill level; sight point; Abrasion; speed; visibility; FOV; field of view; primary; secondary; tertiary; ZoC; ZoR; mid-eye; Design aid; safety; heavy truck
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Jalkebo, C. (2014). Placement of Controls in Construction Equipment Using Operators´Sitting Postures : Process and Recommendations. (Thesis). Linköping UniversityLinköping University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-108980
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Jalkebo, Charlotte. “Placement of Controls in Construction Equipment Using Operators´Sitting Postures : Process and Recommendations.” 2014. Thesis, Linköping UniversityLinköping University. Accessed April 18, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-108980.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Jalkebo, Charlotte. “Placement of Controls in Construction Equipment Using Operators´Sitting Postures : Process and Recommendations.” 2014. Web. 18 Apr 2021.
Vancouver:
Jalkebo C. Placement of Controls in Construction Equipment Using Operators´Sitting Postures : Process and Recommendations. [Internet] [Thesis]. Linköping UniversityLinköping University; 2014. [cited 2021 Apr 18].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-108980.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Jalkebo C. Placement of Controls in Construction Equipment Using Operators´Sitting Postures : Process and Recommendations. [Thesis]. Linköping UniversityLinköping University; 2014. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-108980
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
. 
Open Access Theses and Dissertations
