venkatesh-observationswitching-2006.pdf (219.61 kB)
Observation-switching linear dynamic systems for tracking humans through unexpected partial occlusions by scene objects
conference contribution
posted on 2006-01-01, 00:00 authored by P Peursum, Svetha VenkateshSvetha Venkatesh, G WestThis paper focuses on the problem of tracking people through occlusions by scene objects. Rather than relying on models of the scene to predict when occlusions will occur as other researchers have done, this paper proposes a linear dynamic system that switches between two alternatives of the position measurement in order to handle occlusions as they occur. The filter automatically switches between a foot-based measure of position (assuming z = Q) to a head-based position measure (given the person's height) when an occlusion of the person's lower body occurs. No knowledge of the scene or its occluding objects is used. Unlike similar research [2, 14], the approach does not assume a fixed height for people and so is able to track humans through occlusions even when they change height during the occlusion. The approach is evaluated on three furnished scenes containing tables, chairs, desks and partitions. Occlusions range from occlusions of legs, occlusions whilst being seated and near-total occlusions where only the person's head is visible. Results show that the approach provides a significant reduction in false-positive tracks in a multi-camera environment, and more than halves the number of lost tracks in single monocular camera views.
History
Event
International Conference on Pattern Recognition (18th : 2006 : Hong Kong, China)Pagination
929 - 934Publisher
IEEELocation
Hong Kong, ChinaPlace of publication
Washington, D. C.Start date
2006-08-20End date
2006-08-24ISSN
1051-4651ISBN-13
9780769525211ISBN-10
0769525210Language
engNotes
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.Publication classification
E1.1 Full written paper - refereedCopyright notice
2006, IEEETitle of proceedings
ICPR 2006 : Proceedings of the 18th International Conference on Pattern RecognitionUsage metrics
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