Ndhlovu, TNicolls, F2012-03-202012-03-202011-11Ndhlovu, T and Nicolls, F. Using temporal seeding to constrain the disparity search range in stereo matching. Proceedings of the Twenty-Second Annual Symposium of the Pattern Recognition Association of South Africa, Vanderbijlpark, South Africa, 22-25 November 2011978-0-620-51914-4http://www.prasa.org/proceedings/2011/prasa2011-21.pdfhttp://hdl.handle.net/10204/5663Proceedings of the Twenty-Second Annual Symposium of the Pattern Recognition Association of South Africa, Vanderbijlpark, South Africa, 22-25 November 2011In a stereo image sequence, finding feature correspondences is normally done for every frame without taking temporal information into account. Reusing previous computations can add valuable information. A temporal seeding technique is developed for reusing computed disparity estimates on features in a stereo image sequence to constrain the disparity search range. Features are detected on a left image and their disparity estimates are computed using a local-matching algorithm. The features are then tracked to a successive left image of the sequence and by using the previously calculated disparity estimates, the disparity search range is constrained. Errors between the local-matching and the temporal seeding algorithms are analysed. Results show that although temporal seeding suffers from error propagation, a decrease in computational time of approximately 20% is obtained when it is applied on 87 frames of a stereo sequence. Furthermore a confidence measure is used to select start-up points for seeding and experiments are conducted on features with different confidences.enTemporal seedingStereo matchingConference PresentationNdhlovu, T., & Nicolls, F. (2011). Using temporal seeding to constrain the disparity search range in stereo matching. PRASA. http://hdl.handle.net/10204/5663Ndhlovu, T, and F Nicolls. "Using temporal seeding to constrain the disparity search range in stereo matching." (2011): http://hdl.handle.net/10204/5663Ndhlovu T, Nicolls F, Using temporal seeding to constrain the disparity search range in stereo matching; PRASA; 2011. http://hdl.handle.net/10204/5663 .TY - Conference Presentation AU - Ndhlovu, T AU - Nicolls, F AB - In a stereo image sequence, finding feature correspondences is normally done for every frame without taking temporal information into account. Reusing previous computations can add valuable information. A temporal seeding technique is developed for reusing computed disparity estimates on features in a stereo image sequence to constrain the disparity search range. Features are detected on a left image and their disparity estimates are computed using a local-matching algorithm. The features are then tracked to a successive left image of the sequence and by using the previously calculated disparity estimates, the disparity search range is constrained. Errors between the local-matching and the temporal seeding algorithms are analysed. Results show that although temporal seeding suffers from error propagation, a decrease in computational time of approximately 20% is obtained when it is applied on 87 frames of a stereo sequence. Furthermore a confidence measure is used to select start-up points for seeding and experiments are conducted on features with different confidences. DA - 2011-11 DB - ResearchSpace DP - CSIR KW - Temporal seeding KW - Stereo matching LK - https://researchspace.csir.co.za PY - 2011 SM - 978-0-620-51914-4 T1 - Using temporal seeding to constrain the disparity search range in stereo matching TI - Using temporal seeding to constrain the disparity search range in stereo matching UR - http://hdl.handle.net/10204/5663 ER -