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http://dx.doi.org/10.5909/JBE.2012.17.3.471

Sub-Sampled Pixels based Fast Mode Selection Algorithm for Intra Prediction in H.264/AVC  

Kim, Young-Joon (Dept. of Electronic Engineering, Hanyang University)
Kim, Won-Kyun (Dept. of Electronic Engineering, Hanyang University)
Jung, Dong-Jin (Dept. of Electronic Engineering, Hanyang University)
Jeong, Je-Chang (Dept. of Electronic Engineering, Hanyang University)
Publication Information
Journal of Broadcast Engineering / v.17, no.3, 2012 , pp. 471-479 More about this Journal
Abstract
Intra prediction is one of the significant techniques in H.264/AVC reference software; however, it has heavy computational complexity. In order to solve this problem, many fast algorithms have been proposed. In this paper, we propose a fast intra mode decision algorithm which predicts the edge direction of the current block using sub-sampled pixels to reduce high computational complexity of the H.264/AVC encoder. The proposed algorithm shows that it not only improves the coding performance but also reduces the computational complexity of the H.264/AVC encoder compared to previous algorithms. The experimental results show that the proposed algorithm achieves the encoding time reduction of 75.93% on an average with slight peak signal-to-noise ratio (PSNR) drop and bit-rate increment.
Keywords
intra prediction; fast mode selection; mode decision; H.264/AVC;
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