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Edge Feature Based Fast Mode Decision Algorithm for H. 264 Intra Prediction

机译:基于边缘特征的H.264帧内预测快速模式决策算法

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摘要

A fast intra mode decision algorithm is proposed in this paper to reduce the complexity of H. 264 encoder. The proposed algorithm adopted the pre-processing method based on edge feature in pictures to filter out some impossible prediction modes. Context information and pre-computed threshold are used to determine whether it is necessary to check the DC mode. This method is able to get rid of most of candidate modes so that only 66-150 modes are left for the final mode decision, instead of 592 modes in the case of full search (FS) method of H. 264. Simulation results demonstrate that the coding time of the proposed algorithm falls down 71. 7 percent compared with FS method, while the performance loss is trivial compared with FS mode decision scheme.
机译:本文提出了一种快速的帧内模式决策算法,以降低H.264编码器的复杂度。该算法采用了基于图像边缘特征的预处理方法,以滤除一些不可能的预测模式。使用上下文信息和预先计算的阈值来确定是否有必要检查DC模式。这种方法能够摆脱大多数候选模式,从而仅保留66-150个模式用于最终模式决策,而不是使用H.264的全搜索(FS)方法时的592个模式。仿真结果表明,与FS方法相比,所提算法的编码时间减少了71.7%。而FS模式决策方案的性能损失却很小。

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