Optimization of the predict operator in lifting-based motion-compensated temporal filtering

Gregoire Pau; Christophe Tillier; Beatrice Pesquet-Popescu

doi:10.1117/12.526824

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18 January 2004 Optimization of the predict operator in lifting-based motion-compensated temporal filtering

Gregoire Pau; Christophe Tillier; Beatrice Pesquet-Popescu

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Proceedings Volume 5308, Visual Communications and Image Processing 2004; (2004) https://doi.org/10.1117/12.526824
Event: Electronic Imaging 2004, 2004, San Jose, California, United States

Abstract

The motion-compensated temporal filtering is an essential part of a scalable wavelet-based video coding scheme, which applies a temporal wavelet transform in the motion direction over the frames of a video sequence. The lifting structure of the temporal filter bank tackled in this paper involves a predict operator which makes use of two motion vector fields to bidirectionally predict frames from their neighbouring ones. We show in this paper that there exists an optimal algorithm allowing to estimate jointly these two motion vector fields subject to an optimization criterion directly related to the coding of the detail subbands. We provide an iterative suboptimal form of this algorithm implementing this approach. We show that this algorithm provides substantial gains in terms of PSNR, with the same complexity as a separate estimation of the two motion vector fields.

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Gregoire Pau, Christophe Tillier, and Beatrice Pesquet-Popescu "Optimization of the predict operator in lifting-based motion-compensated temporal filtering", Proc. SPIE 5308, Visual Communications and Image Processing 2004, (18 January 2004); https://doi.org/10.1117/12.526824

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