Adaptive Search-window Motion Estimation Algorithm Based on DSP Implementation
Wanyi Gu · Jisuanji gongcheng · 2008
Based on DSP characteristics and motion estimation’s accuracy and efficiency requirements,a new adaptive search-window fast motion estimation search algorithm is proposed.This algorithm uses the spatial and temporal correlations among video images and the statistical characteristics of motion vectors,adaptively adjusts the search-window on frame layer and block layer,and searches the window by using diamond search(DS) method.Experimental results show that,on average,it saves 50% data transmission compared with fixed-size search-window algorithm and 3 points compared with DS,maintaining high accuracy of estimation.And it suits for different types of video sequences adaptively.