(A) computationally efficient motion search method for H.264/AVC = H.264/AVC에서 계산량을 줄인 효율적 움직임 탐색 방법

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H.264/AVC achieves higher coding performance than the previous video coding standards such as MPEG-2, MPEG-4, and H.263. Especially, its motion estimation (ME) accomplishes considerable coding performance. However, the H.264/AVC encoder requires heavy computational complexity due to the ME with multiple reference frames and variable block sizes. Therefore, in order to reduce the computational complexity, this thesis analyzes statistical characteristics of early termination (ET) methods in unsymmetrical-cross multi-hexagon-grid search (UMHS) and modifies the previous ET methods by using adaptive thresholds, which are based on rate-distortion (R-D) cost. In addition, the thesis proposes a new ET method and multi-octagon search pattern to decrease search points of the multi-hexagon-grid search. Experimental results show that the proposed algorithm reduces computational complexity of encoder while keeping R-D performance of UMHS in various encoding conditions.
Advisors
Park, Hyun-Wookresearcher박현욱researcher
Description
한국과학기술원 : 전기및전자공학전공,
Publisher
한국과학기술원
Issue Date
2009
Identifier
327318/325007  / 020074201
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 전기및전자공학전공, 2009. 8., [ vi, 52 p. ]

Keywords

Early termination; FME; H.264/AVC; motion estimation; UMHS; 조기종료; 고속 움직임 탐색; H.264/AVC; 움직임 탐색; UMHS; Early termination; FME; H.264/AVC; motion estimation; UMHS; 조기종료; 고속 움직임 탐색; H.264/AVC; 움직임 탐색; UMHS

URI
http://hdl.handle.net/10203/38768
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=327318&flag=dissertation
Appears in Collection
EE-Theses_Master(석사논문)
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