Side Information Generation Algorithm Based on Variable Block Motion Vector
Cheng Deqian · Video Engineering · 2015
Aiming at the problem that areas which have rich details can result in serious blocking effects in a distributed video coding system,a side information generation algorithm based on variable block motion vector is proposed.The pixel blocks are divided into preservation blocks and motion blocks according to the correlation between the blocks in adjacent key frames.The preservation blocks are directly retained,and the pixel blocks existed in the motion blocks are continued to divide and its initial motion vectors of the sub-blocks are calculated.At last,in order to get improved side information,it uses the method of weighted adaptive motion compensation to process all the motion vectors of corresponding blocks.The experimental results show that,for the video sequence is severely complex,this algorithm can improve the quality of the side information generation and the PSNR of the improved method proposed in this paper can increase by 0.98 ~ 1.33 d B.