NDLI: Adaptive Search Range Motion Estimation Algorithm for H.264/AVC

Content Provider	IEEE Xplore Digital Library
Author	Tian Song Ogata, K. Saito, K. Shimamoto, T.
Copyright Year	2007
Description	Author affiliation: Comput. Syst. Eng., Tokushima Univ. (Tian Song)
Abstract	In this paper, a novel variable search range algorithm is proposed for the H.264/AVC. First we evaluate the influence on the bitrate and PSNR when the search range is set from a small range to a increasing wide range. The simulation shows interesting results that sometimes when the search range is set to a smaller search range it can achieve better result at both the bitrate and the PSNR comparing with the reference software with the fixed search range of 16 times 16. Furthermore, we find that how much the search range could be reduced to achieve an optimum search range have strong relation with the average of the frame motion vectors. Based on these simulation results a adaptive search range algorithm which estimate the most efficient search range from the previous frames with a adaptively search range adjustment method is proposed. Simulation results show that proposed algorithm could achieve the motion estimation by average 45% computation complexity compare with the reference software with equivalent PSNR and the bitrate results.
Starting Page	3956
Ending Page	3959
File Size	184921
Page Count	4
File Format	PDF
ISBN	1424409209
DOI	10.1109/ISCAS.2007.378666
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-05-27
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Motion estimation Automatic voltage control Bit rate PSNR Cities and towns Motion compensation Computational modeling Optimization methods Systems engineering and theory Focusing
Content Type	Text
Resource Type	Article

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