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	Quick algorithm for fractional-pixel accurate motion estimation
	Zhang Tingting ; Wang Xiwei ; Cui Huijuan ; Tang Kun
	2010-05-06 ; 2010-05-06
关键词	Theoretical or Mathematical/ code standards motion estimation sequences video coding/ fractional-pixel motion estimation video coding standard H. 264 integer pixel motion vector diamond search method encoder sequences/ B6135C Image and video coding C5260B Computer vision and image processing techniques C5260D Video signal processing
中文摘要	The computations for fractional-pixel motion estimates in video coding standard H. 264 are reduced by an algorithm based on the characteristics of the integer pixel and fractional-pixel motion vectors. An array of early termination thresholds is used to skip most of the unnecessary fractional-pixel motion search points, with the computational cost further reduced with the diamond search method. Tests show that with the early termination algorithm, the computations for the fractional-pixel motion estimates are reduced by 77.45%, with a PSNR (peak signal noise ratio) loss of 0.03 dB and a bit rate increment of 2.38%. The algorithm significantly reduces the computation cost of motion estimates, while maintaining encoder performance. The algorithm is most effective for sequences with simple movements and constant backgrounds.
语种	中文 ; 中文
出版者	Tsinghua Univ. Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/11651]
专题	清华大学
推荐引用方式 GB/T 7714	Zhang Tingting,Wang Xiwei,Cui Huijuan,et al. Quick algorithm for fractional-pixel accurate motion estimation[J],2010, 2010.
APA	Zhang Tingting,Wang Xiwei,Cui Huijuan,&Tang Kun.(2010).Quick algorithm for fractional-pixel accurate motion estimation..
MLA	Zhang Tingting,et al."Quick algorithm for fractional-pixel accurate motion estimation".(2010).

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