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<p><b>Abstract</b>—Shadows of moving objects often obstruct robust visual tracking. We propose an HMM-based segmentation method which classifies in real time each pixel or region into three categories: shadows, foreground, and background objects. In the case of traffic monitoring movies, the effectiveness of the proposed method has been proven through experimental results.</p>
Car tracking, hidden Markov model, image classification, image segmentation, wavelet coefficients.

J. Kato, T. Watanabe, S. Joga, J. Rittscher and A. Blake, "An HMM-Based Segmentation Method for Traffic Monitoring Movies," in IEEE Transactions on Pattern Analysis & Machine Intelligence, vol. 24, no. , pp. 1291-1296, 2002.
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