Side information generation in Wyner-Ziv decoder

Wyner-Ziv (WZ) encoder is a low -complexity encoder and can be made to achieve compression comparable to traditional high complexity encoders but at the expense of a high-complexity decoder. The high complexity of the decoder is mainly attributed to the generation of side information which involves motion estimation. In this paper sub-pixel motion estimation and intra-prediction based on H.264 standard are considered for side information generation. This method is tested with different test sequences by measuring quality of the decoder output video and compared with other simpler methods. The H.264 standard based side information generation is found to be superior over other methods considered.