Study on the Adaptive Search-range Algorithm of UMHexagonS
自适应搜索长度的UMHexagonS算法研究

The paper proposes the adaptive search-range algorithm of UMHexagonS,which is one of motion estimation algorithms for video encoding system on the H.264 standard. Based on analyzing the search-range theoretically and experimentally,its search-range algorithm can be improved. Then,the adaptive algorithm,derived from the anterior search points,is created to reduce the redundant search points. The result shows that the adaptive algorithm can reduce the 15% period of motion estimation under the premise of little change on PSNR and Bit Rate.