Fast Variable Block-Size Motion Estimation by Merging Refined Motion Vector for H.264

Mei-Juan CHEN  Kai-Chung HOU  

Publication
IEICE TRANSACTIONS on Communications   Vol.E89-B   No.10   pp.2922-2928
Publication Date: 2006/10/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.10.2922
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Multimedia Systems for Communications
Keyword: 
H.264,  JM93,  full search,  fast motion estimation,  motion vector,  

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Summary: 
This paper proposes a fast motion estimation algorithm for variable block-sizes by utilizing motion vector bottom-up procedure for H.264. The refined motion vectors of adjacent small blocks are merged to predict the motion vectors of larger blocks for reducing the computation. Experimental results show that our proposed method has lower computational complexity than full search, fast full search and fast motion estimation of the H.264 reference software JM93 with slight quality decrease and little bit-rate increase.