NDLI: A new full-pixel and sub-pixel motion vector search algorithm for fast block-matching motion estimation in H.264

Content Provider	IEEE Xplore Digital Library
Author	Wei Zhenyu Jiang Baochen Zhang Xudong Chen Yu
Copyright Year	2004
Description	Author affiliation: Dept. of Electron. Eng., Tsinghua Univ., Beijing, China (Wei Zhenyu)
Abstract	H.264 is a new recommendation for moving picture coding proposed by JVT. In this standard, full pixel and sub-pixel motion estimation are the most important parts. The unequal-arm adaptive rood pattern search (APRS-3) algorithm has shown a good performance on search speed-up. In this paper, we propose an improved algorithm called APRS-4 which applies an early termination technology on APRS-3 by using adaptive threshold. This early termination technology is also applied on sub-pixel motion estimation, and a new fast sub-pixel motion estimation algorithm is proposed which uses the motion vector information of the neighbor blocks. Experimental results show that both algorithms have achieved a good speed-up ratio. Compared with full-pixel motion estimation, our new algorithm could keep image quality well with almost the same bit rate.
Starting Page	345
Ending Page	348
File Size	102961
Page Count	4
File Format	PDF
ISBN	0769522440
DOI	10.1109/ICIG.2004.13
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-12-18
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image quality Video coding Graphics Image segmentation Codecs Motion estimation Space technology Bit rate Encoding Computational efficiency
Content Type	Text
Resource Type	Article

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