Fast Mode Decision on the Enhancement Layer in H.264 Scalable Extension

Tae-Kyoung KIM  Jeong-Hwan BOO  Sang Ju PARK  

IEICE TRANSACTIONS on Information and Systems   Vol.E92-D   No.12   pp.2545-2547
Publication Date: 2009/12/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E92.D.2545
Print ISSN: 0916-8532
Type of Manuscript: LETTER
Category: Image Processing and Video Processing
MPEG-4 AVC,  H.264,  scalable video coding,  inter-layer prediction,  fast mode decision,  

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Scalable video coding (SVC) was standardized as an extension of H.264/AVC by the JVT (Joint Video Team) in Nov. 2007. The biggest feature of SVC is multi-layered coding where two or more video sequences are compressed into a single bit-stream. This letter proposes a fast block mode decision algorithm in spatial enhancement layer of SVC. The proposed algorithm achieves early decision by limiting the number of candidate modes for block with certain characteristic called same motion vector block (SMVB). Our proposed method reduces the complexity, in terms of encoding time by up to 66.17%. Nevertheless, it shows negligible PSNR degradation by only up to 0.16 dB and increases the bit-rate by only up to 0.64%, respectively.