| 摘 要: 在H.264视频编码器帧内预测模式下，为确定一个宏块的帧内预测模式，会带来很大的运算复杂度，基于 图像差分的帧间预测模式快速选择算法，采用测定图像序列平坦度的思想，能够实现快速帧间模式选择。可以有效减少 模式搜索次数并能保证视频编码的质量，从而可大幅度降低编码时间和视频压缩的计算量，有效地减少了帧间模式选择 算法运算复杂度，有利于实际应用。 |
| 关键词: H.264；图像差分；模式选择；边缘信息；帧间预测 |
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中图分类号: TP391.41
文献标识码: A
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| 基金项目: 河南省教育厅，基于数码相机源辨识的数字图像取证技术研究(14A520072)；许昌市科技局，工业无线网络WIA_PA网络研究与设计(1101061). |
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| The Optimization of Fast Algorithm for Intra-Prediction Mode Selection in H.264 |
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MENG Lei
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( School of Information Engineering, Xuchang University, Xuchang 461000, China)
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| Abstract: With the intra-frame prediction mode of H.264 video encoder,determining an intra-prediction mode of a macro block will bring great computational complexity.The paper proposes an efficient fast intra-prediction mode selection algorithm based on image difference.It adopts the idea of determination image sequence's flatness to achieve fast inter-frame mode selection.This algorithm can reduce the times of search mode effectively and ensure the quality of video encoding,which can greatly decrease the encoding time and the computation of video compression and reduce the computational complexity of the inter-frame mode selection algorithm.It is conducive to real-time application. |
| Keywords: H.264;image difference;mode selection;edge information;intra-prediction |
