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Stereo System for Tracking Moving Object using Log-Polar Transformation and ZDF  

Yoon, Jong-Kun (LG Electronics)
Park, Il- (Information & Communications, Gumi College)
Lee, Yong-Bum (HUHU Co. Ltd)
Chien, Sung-Il (School of Electronic and Electrical Engineering Kyungpook National University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SP / v.39, no.1, 2002 , pp. 61-69 More about this Journal
Abstract
Active stereo vision system allows us to localize a target object by passing only the features of small disparities without heavy computation for identifying the target. This simple method, however, is not applicable to the situations where a distracting background is included or the target and other objects are located on the zero disparity area simultaneously To alleviate these problems, we combined filtering with foveation which employs high resolution in the center of the visual field and suppresses the periphery which is usually less interesting. We adopted an image pyramid or log-polar transformation for foveated imaging representation. We also extracted the stereo disparity of the target by using projection to keep the stereo disparity small during tracking. Our experiments show that log-polar transformation is superior to either an image pyramid or traditional method in separating a target from the distracting background and fairly enhances the tracking performance.
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