NDLI: Optimization on motion estimation algorithm based on H. 264

Content Provider	IEEE Xplore Digital Library
Author	Xingyu Wen Guiju Li
Copyright Year	2010
Description	Author affiliation: Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, CIOMP, China (Xingyu Wen; Guiju Li)
Abstract	Motion estimation is a very important part of video compression. As a result of using precision of motion vector in H.264 encoder, the computational cost increases rapidly, and motion estimation is the most time-consuming stage. In this paper, based on the UMHexagonS algorithm, an optimized algorithm is proposed based on the dynamic search window selection, big hexagon and small hexagon search mode respectively, which saves motion estimation time effectively with a little quality loss. Experiments with some typical video sequences show that compared to the original UMHexagonS algorithm, this new algorithm can save about 17.851% motion estimation time and reduce the complexity of original scheme as well as enhance the real time performance of encoder and almost has no changes in the reconstructed picture quality and bitrates.
File Size	606379
File Format	PDF
ISBN	9781424465392
ISSN	21547491
e-ISBN	9781424465422
DOI	10.1109/ICACTE.2010.5579421
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-08-20
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Road transportation Bit rate H.264 motion estimation UMHexagonS Algorithm Mobile communication Automatic voltage control dynamic search window
Content Type	Text
Resource Type	Article

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