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Physical models for moving shadow and object detection in video

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

Current moving object detection systems typically 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 previous work, we present an approach that does not rely on any geometrical assumptions such as camera location and ground surface/object geometry. The approach is based on a new spatio-temporal albedo test and dichromatic reflection model and accounts for both the sun and the sky illuminations. Results are presented for several video sequences representing a variety of ground materials when the shadows are cast on different surface types. These results show that our approach is robust to widely different background and foreground materials, and illuminations.

Published in:

Pattern Analysis and Machine Intelligence, IEEE Transactions on  (Volume:26 ,  Issue: 8 )