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VLSI architectures for accurate motion and disparity estimation using full-search block-matching and edge preserving non-linear smoothing

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2 Author(s)
Karathanasis, H.C. ; INTRACOM S.A., Peania Attika, Greece ; Vlontzos, J.A.

Flexible systolic architectures implementing the full-search block-matching algorithm for motion and disparity estimation are discussed. These architectures require sequential input but perform efficient parallel processing, and are easily cascadable for allowing processing with a variety of block sizes. Because motion and disparity estimation are ill-posed problems, the estimated motion/disparity field always contains some errors. The estimation accuracy can be improved by optimizing the motion/disparity vector field under the constraint that it must vary smoothly except at discontinuities. For this purpose, an Edge Preserving Non-Linear Smoothing Filter based on the Markov Random Field theory is discussed, and a VLSI architecture for its real-time implementation is presented

Published in:

VLSI Signal Processing, VI, 1993., [Workshop on]

Date of Conference:

20-22 Oct 1993