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Moving shadow detection using a physics-based approach

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2 Author(s)
Nadimi, S. ; Center for Res. in Intelligent Syst., California Univ., Riverside, CA, USA ; Bhanu, B.

Moving object detection systems generally detect shadows cast by the moving object as part of the moving object. In this paper the problem of separating moving cast shadows from the moving objects in an outdoor environment is addressed. Unlike other previous work, we provide a method that does not use any geometrical information. Our approach is based on a spatiotemporal albedo normalization test and a dichromatic reflection model. The physics based model is used both in the estimation and verification phases. We provide results for several different video sequences representing a variety of materials and shadows. We achieve excellent results in distinguishing moving objects from their shadows. The results indicate that our approach is robust to a variety of background and foreground materials and varying illumination conditions.

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Pattern Recognition, 2002. Proceedings. 16th International Conference on  (Volume:2 )

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