A New Method of Motion Estimation and Motion Compensation Based on Wavelet Transform in Image Sequence Coding
序列图象编码系统中基于小波变换的运动估计与运动补偿方法

A scheme of variable block size Multiresolution Motion Estimation(VBMRME) is presented in this paper,which reduces temporal redundancy between pictures of the image sequence. Motion vectors in the highest level of the wavelet pyramid are first estimated.Then they are refined for the prediction of motion vectors in the lower levels.The size of a block in each sub image is adapted to its level in the wavelet pyramid,so that the searching and matching time can be considerably reduced.