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1 November 1991 Bayesian approach to segmentation of temporal dynamics in video data
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We present an algorithm for Bayesian estimation of temporally active spatial regions of video sequences. The algorithm improves the effectiveness of conditional replenishment for video compression in many applications which feature a background/foreground format. For the sake of compatibility with prevalent block-type coders, the binaryvalued segmentation is constrained to be constant on square blocks of 8x8 or 16 x 16 pixels. Our approach favors connectivity at two levels of scale. The first is at the individual pixel level, where a Gibbs distribution is used for the active pixels in the binary field of supra-threshold interframe differences. The final segmentation also assigns higher probability to patterns of active blocks which are connected, since in general, macroscopic entities are assumed to be many blocks in size. Demonstrations of the advantage of the Bayesian approach are given through simulations with standard sequences.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Coleen T. Jones and Ken D. Sauer "Bayesian approach to segmentation of temporal dynamics in video data", Proc. SPIE 1605, Visual Communications and Image Processing '91: Visual Communication, (1 November 1991);


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