{"id":{"repo_id":"buffalo","oai_identifier":"oai:ubir.buffalo.edu:10477/84019"},"canonical_url":"https://search.dev.ndltd.org/etd/buffalo/oai:ubir.buffalo.edu:10477/84019","repository":{"repo_id":"buffalo","name":"Buffalo","base_url":"https://ubir.buffalo.edu/oai/request"},"display":{"title":"A Low New-Cost, High-Precision Motion Analysis Protocol and a Case Study of Human Chewing Gape During Hard and Soft Food Mastication","abstract":"M.A.","abstract_html":"M.A.","abstract_has_math":false,"creators":["Grabowski, Connor; 0000-0002-7427-013X"],"institution":"State University of New York at Buffalo","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":["Tseng, Jack","Pathology and Anatomical Sciences"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2022,"date_issued":"2022-06-21T15:47:06Z","date_published":"2022-06-21T15:47:06Z","updated_at":"2026-07-27T19:05:28Z","subjects":["biomechanics","morphology"],"languages":["eng"],"rights":["Users of works found in University at Buffalo Institutional Repository (UBIR) are responsible for identifying and contacting the copyright owner for permission to reuse. University at Buffalo Libraries do not manage rights for copyright-protected works and cannot assist with permissions.","Copyright retained by author."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/10477/84019","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Tseng, Jack","Pathology and Anatomical Sciences"]},{"key":"dc:creator","label":"Author","values":["Grabowski, Connor; 0000-0002-7427-013X"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2022-06-21T15:47:06Z","2020"]},{"key":"dc:publisher","label":"Institution","values":["State University of New York at Buffalo"]},{"key":"dc:type","label":"Dc Type","values":["Text","Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["biomechanics","morphology"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Users of works found in University at Buffalo Institutional Repository (UBIR) are responsible for identifying and contacting the copyright owner for permission to reuse. University at Buffalo Libraries do not manage rights for copyright-protected works and cannot assist with permissions.","Copyright retained by author."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/10477/84019"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["M.A.","Commercial 3D motion-tracking systems are readily available, albeit expensive, options for motion research in dental science and comparative biology. Most applications using these devices are in whole-body or whole-limb model systems. The extent to which smaller-scale, finer movements can be captured precisely with such systems is limited by factors such as marker size, and the ability of markers to non-invasively track movements without impediment. Motion capture markers in commercial systems range from 3 to 25 mm in diameter, many of which may be inadequately sensitive to smaller-scale movements that occur in motions such as chewing. We designed and tested a cost-effective alternative to commercial turn-key systems for capturing jaw motion in mammals. Using a Video Reconstruction of Moving Morphology based approach, we analyzed the precision and accuracy of a motion capture system based on videos of 3 mm diameter fluorescent paper markers, recorded by two synchronized cameras coupled with blue light filters and blue LED light source to enhance marker-to-background contrast. Using free software (XMALab and R) and custom scripts, our protocol achieved a mean reprojection error of 0.16 pixels. This value translates to a mean accuracy level of 0.02 mm, more than twice as accurate as those reported for several mainstream commercial systems (0.10 to 0.30 mm). We were able to apply this protocol to subject videos of both hard food item cycles, and soft food item cycles, and the system was able to find differences in the jaw opening and closing velocities, as well as the cycle durations. The hard food item had higher velocities, as well as a significantly shorter cycle.","**To request an accessible version of the file(s) associated with this item, contact library@buffalo.edu. Please include the item's persistent URL [http://hdl.handle.net/. . .] in your request.**"]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["A Low New-Cost, High-Precision Motion Analysis Protocol and a Case Study of Human Chewing Gape During Hard and Soft Food Mastication"]}]}],"canonical_facts":{"dc:contributor":["Tseng, Jack","Pathology and Anatomical Sciences"],"dc:creator":["Grabowski, Connor; 0000-0002-7427-013X"],"dc:date":["2022-06-21T15:47:06Z","2020"],"dc:description":["M.A.","Commercial 3D motion-tracking systems are readily available, albeit expensive, options for motion research in dental science and comparative biology. Most applications using these devices are in whole-body or whole-limb model systems. The extent to which smaller-scale, finer movements can be captured precisely with such systems is limited by factors such as marker size, and the ability of markers to non-invasively track movements without impediment. Motion capture markers in commercial systems range from 3 to 25 mm in diameter, many of which may be inadequately sensitive to smaller-scale movements that occur in motions such as chewing. We designed and tested a cost-effective alternative to commercial turn-key systems for capturing jaw motion in mammals. Using a Video Reconstruction of Moving Morphology based approach, we analyzed the precision and accuracy of a motion capture system based on videos of 3 mm diameter fluorescent paper markers, recorded by two synchronized cameras coupled with blue light filters and blue LED light source to enhance marker-to-background contrast. Using free software (XMALab and R) and custom scripts, our protocol achieved a mean reprojection error of 0.16 pixels. This value translates to a mean accuracy level of 0.02 mm, more than twice as accurate as those reported for several mainstream commercial systems (0.10 to 0.30 mm). We were able to apply this protocol to subject videos of both hard food item cycles, and soft food item cycles, and the system was able to find differences in the jaw opening and closing velocities, as well as the cycle durations. The hard food item had higher velocities, as well as a significantly shorter cycle.","**To request an accessible version of the file(s) associated with this item, contact library@buffalo.edu. Please include the item's persistent URL [http://hdl.handle.net/. . .] in your request.**"],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/10477/84019"],"dc:language":["eng"],"dc:publisher":["State University of New York at Buffalo"],"dc:rights":["Users of works found in University at Buffalo Institutional Repository (UBIR) are responsible for identifying and contacting the copyright owner for permission to reuse. University at Buffalo Libraries do not manage rights for copyright-protected works and cannot assist with permissions.","Copyright retained by author."],"dc:subject":["biomechanics","morphology"],"dc:title":["A Low New-Cost, High-Precision Motion Analysis Protocol and a Case Study of Human Chewing Gape During Hard and Soft Food Mastication"],"dc:type":["Text","Thesis"]},"updated_at":"2026-07-27T19:05:28Z"}