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Báo cáo hóa học: " Research Article A Content-Motion-Aware Motion Estimation for Quality-Stationary Video Coding Meng-Chun Lin and Lan-Rong Dung"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article A Content-Motion-Aware Motion Estimation for Quality-Stationary Video Coding Meng-Chun Lin and Lan-Rong Dung | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2010 Article ID 403634 12 pages doi 10.1155 2010 403634 Research Article A Content-Motion-Aware Motion Estimation for Quality-Stationary Video Coding Meng-Chun Lin and Lan-Rong Dung Department of Electrical and Control Engineering National Chiao Tung University Hsinchu 30010 Taiwan Correspondence should be addressed to Meng-Chun Lin asurada.ece90g@nctu.edu.tw Received 31 March 2010 Revised 3 July 2010 Accepted 1 August 2010 Academic Editor Mark Liao Copyright 2010 M.-C. Lin and L.-R. Dung. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. The block-matching motion estimation has been aggressively developed for years. Many papers have presented fast block-matching algorithms FBMAs for the reduction of computation complexity. Nevertheless their results in terms of video quality and bitrate are rather content-varying. Very few FBMAs can result in stationary or quasistationary video quality for different motion types of video content. Instead of using multiple search algorithms this paper proposes a quality-stationary motion estimation with a unified search mechanism. This paper presents a content-motion-aware motion estimation for quality-stationary video coding. Under the rate control mechanism the proposed motion estimation based on subsample approach adaptively adjusts the subsample ratio with the motion-level of video sequence to keep the degradation of video quality low. The proposed approach is a companion for all kinds of FBMAs in H.264 AVC. As shown in experimental results the proposed approach can produce stationary quality. Comparing with the full-search block-matching algorithm the quality degradation is less than 0.36 dB while the average saving of power consumption is 69.6 . When applying the proposed approach .