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《Journal of Zhejiang University(Engineering Science)》 2007-04
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ATETS:adaptive early termination search algorithm for H.264

FANG Jian,ZHEN Wei,WANG Kuang (Department of Information Science and Electronic Engineering,Zhejiang University,Hangzhou 310027,China)  
An adaptive early termination search algorithm was proposed to reduce the computational amount of motion compensation in H.264 video coding brought about by the variable block-size motion estimation.According to the characteristics of integer discrete cosine transformation(DCT) and quantization,the coefficient-all-zero block was determined in advance to terminate meaningless search.According to the high correlation between motion vector and predicted motion vector,the predicted block was chosen as early termination block.An adaptive threshold based on quantization step was presented to optimize the performance. Experiments showed that when this algorithm is used with the UMHexagonS fast search algorithm,it can reduce about 60% of search points and keep the quality and compression rate of picture unchanged.This algorithm provides robust performance for quantization step,and it is applicable to the fixed bit-rate real-time system.
【Fund】: 国家自然科学基金资助项目(90307002)
【CateGory Index】: TN919.81
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【Co-references】
China Proceedings of conference Full-text Database 1 Hits
1 XIE Jian1+, SUN Li-Feng2, ZHONG Yu-Zhuo3 123(Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China);A Simple Network Environment Based Interactive Multi-view Video System[A];[C];2005
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