标题：Improvement and Research on Efficient Motion Estimation Algorithm in Video Compression Generations Analysis of Lip Image Streams for Isolate Words Recognition
期刊名称：International Journal of Multimedia and Ubiquitous Engineering
印刷版ISSN：1975-0080
出版年度：2015
卷号：10
期号：11
页码：343-358
DOI：10.14257/ijmue.2015.10.11.33
出版社：SERSC
摘要：To improve and enhance the estimation speed and accuracy of motion estimation, this paper proposes a fast diamond search algorithm with improved search strategy; researches motion estimation algorithm by using pattern block matching; analyzes and set up fast searching algorithm model based on the fast convergence characteristics of three step search, the central distribution characteristics of new three step search and the approximate global optimal characteristics of diamond search; use the coarse positioning and fortified halfway stop technologies to establish improved diamond search algorithm; gives the method of reducing the number of search bits. Through experiment and analysis, the results show that the improved diamond search algorithm can effectively reduce the matching points and improve the search speed, and achieve a higher average peak signal to noise ratio.
