Hybrid Wyner-Ziv and intra video coding with partial matching motion estimation at the decoder

Popular Wyner-Ziv (WZ) video coders divide the sequences into intra key frames and WZ frames. In this paper, we propose a new block-based coding system that uses hybrid intra and WZ frames. A part of each block is first intra coded and the other parts are WZ coded, in a number of steps. There is no need for key frames; the key information is controlled at the block level and used for motion estimation. This allows the selection of the amount and position of intra information to be locally optimized. The decoder does not use interpolation; rather it uses partial matching to estimate the real motion of the block that is used to generate better side information. The first simulations show promising results and good opportunities of improvement. In addition, this system is completely practical and inherently robust.