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Proceedings Paper

A fast inter mode decision algorithm in H.264/AVC for IPTV broadcasting services
Author(s): Geun-Yong Kim; Bin-Yeong Yoon; Yo-Sung Ho
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Paper Abstract

The new video coding standard H.264/AVC employs the rate-distortion optimization (RDO) method for choosing the best coding mode. However, since it increases the encoder complexity tremendously, it is not suitable for real-time applications, such as IPTV broadcasting services. Therefore we need a fast mode decision algorithm to reduce its encoding time. In this paper, we propose a fast mode decision algorithm considering quantization parameter (QP) because we have noticed that the frequency of best modes depends on QP. In order to consider these characteristics, we use the coded block pattern (CBP) that has "0" value when all quantized discrete cosine transform (DCT) coefficients are zero. We also use both the early SKIP mode and early 16x16 mode decisions. Experimental results show that the proposed algorithm reduces the encoding time by 74.6% for the baseline profile and 72.8% for the main profile, compared to the H.264/AVC reference software.

Paper Details

Date Published: 29 January 2007
PDF: 10 pages
Proc. SPIE 6508, Visual Communications and Image Processing 2007, 65081L (29 January 2007); doi: 10.1117/12.703667
Show Author Affiliations
Geun-Yong Kim, Electronics and Telecommunications Research Institute (South Korea)
Bin-Yeong Yoon, Electronics and Telecommunications Research Institute (South Korea)
Yo-Sung Ho, Gwangju Institute of Science and Technology (South Korea)


Published in SPIE Proceedings Vol. 6508:
Visual Communications and Image Processing 2007
Chang Wen Chen; Dan Schonfeld; Jiebo Luo, Editor(s)

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