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Computer Vision, IEEE International Conference on (2005)
Beijing, China
Oct. 17, 2005 to Oct. 20, 2005
ISSN: 1550-5499
ISBN: 0-7695-2334-X
pp: 454-461
Liang Zhao , University of Maryland at College Park
Larry S. Davis , University of Maryland at College Park
ABSTRACT
We propose a closely coupled object detection and segmentation algorithm for enhancing both processes in a cooperative and iterative manner. Figure-ground segmentation reduces the effect of background clutter on template matching; the matched template provides shape constraints on segmentation. More precisely, we estimate the probability of each pixel belonging to the foreground by a weighted sum of the estimates based on shape and color alone. The weight on the shape-based estimate is related to the probability that a familiar object is present and is updated dynamically so that we enforce shape constraints only where the object is present. Experiments on detecting people in images of cluttered scenes demonstrate that the proposed algorithm improves both segmentation and detection. More accurate object boundaries are extracted; higher object detection rates and lower false alarm rates are achieved than performing the two processes separately or sequentially.
INDEX TERMS
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CITATION

L. Zhao and L. S. Davis, "Closely Coupled Object Detection and Segmentation," Computer Vision, IEEE International Conference on(ICCV), Beijing, China, 2005, pp. 454-461.
doi:10.1109/ICCV.2005.55
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