EFFICIENT SCALABLE MOTION CODING FOR WIDE-RANGE SCALABLE VIDEO COMPRESSION (FriAmOR4)

Author(s) : Guillaume Boisson (THOMSON multimedia R&D France, FRANCE) Edouard Francois (THOMSON multimedia R&D France, FRANCE) Christine Guillemot (IRISA, FRANCE)

Abstract : For a scalable video coder to cover a wide range of bit-rates, e.g. from mobile video streaming applications to TV broad-casting, it is essential that motion information presents some form of scalability. In this paper we propose a new accu-racy-scalable motion codec in a wavelet-based spatio-SNR-temporal-scalable framework. It allows to decode a reduced amount of motion information at sub-resolutions, taking advantage that motion compensation requires less and less accuracy at lower spatial resolutions. This new motion co-dec proves its efficiency in our full-scalable framework, by improving significantly video quality at sub-resolutions without inducing any noticeable penalty at high bit-rates.

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