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快速帧内预测方法

Keywords: 视频编码,H.264,帧内预测,快速算法,能量函数

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Abstract:

为了进一步提高编码的效率,提出了一种基于离散余弦变换(discretecosinetransform,简称DCT)的能量函数的快速Intra-4×4模式选择算法.该算法通过估计帧内预测残差的纹理复杂度达到减少进行率失真最优化计算的模式数量.实验结果表明,该算法在保持原有编码效率的基础上能节省约一半的编码时间.

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