NDLI: Dynamic Active Search for quick object detection with pan-tilt-zoom camera

Content Provider	IEEE Xplore Digital Library
Author	Kawanishi, T. Murase, H. Takagi, S. Werner, M.
Copyright Year	2001
Description	Author affiliation: NTT Commun. Sci. Labs., Kanagawa, Japan (Kawanishi, T.)
Abstract	This paper proposes a search method for detecting known objects quickly in 3D environments with a pan-tilt-zoom camera. In our previous work, we proposed an algorithm named Active Search that greatly reduces the number of calculations required to obtain a match between a reference object and an input image using color histograms. We describe two improvements we have made to Active Search for such practical applications as robots and surveillance. First, we increased the robustness as regards the color histogram changes that result from different lighting conditions and camera angles by using multiple reference images and a pixel color vector quantization. Second, we reduced the number of camera operations (pan, tilt and zoom) by using a best-direction-first and upper bound pruning strategies. We call this camera control Dynamic Active Search. Experiments show an improvement in object detection accuracy and a 78% reduction in detection time.
Sponsorship	IEEE Signal Process. Soc
Starting Page	716
Ending Page	719
File Size	375097
Page Count	4
File Format	PDF
ISBN	0780367251
DOI	10.1109/ICIP.2001.958219
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-10-07
Publisher Place	Greece
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Object detection Cameras Robot vision systems Histograms Search methods Surveillance Robustness Pixel Vector quantization Upper bound
Content Type	Text
Resource Type	Article

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