Computer Engineering and Applications ›› 2006, Vol. 42 ›› Issue (11): 13-.
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关于H.264帧内预测模式选择快速算法的研究
田川,王永生
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Abstract: Intra-prediction coding and mode decision based on rate-distortion optimization(RDO)technique was used in the H.264. That made compression performance improved,but the complexity and computation load increase drastically.This paper presents an improved and fast algorithms for intra-prediction mode decision based on the feature of Intra_4x4 and Intra_16x16 and the correlation between luminance and chroma. Experimental results show the proposed algorithms increases the speed of intra coding significantly with negligible loss of PNSR and increase of bite-rate.
摘要: H.264引入帧内预测编码并用率失真优化(RDO)进行预测模式选择,这显著提高了压缩率,但增大了计算复杂性。本文对H.264帧内预测编码模式选择快速算法研究现状进行了分析评述,基于Intra_4x4、 Intra_16x16预测模式的特性,亮度与色度预测模式的相关性,提出了一种改进的算法。仿真实验表明,该算法在保持PSNR基本不变和码率微小增加的情况下,计算复杂性进一步减少。
,. Improved and Fast Algorithms for Intra-prediction Mode Decision in H.264[J]. Computer Engineering and Applications, 2006, 42(11): 13-.
田川,王永生.
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http://cea.ceaj.org/EN/Y2006/V42/I11/13