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面向H.264的码率控制优化算法

DOI: 10.13190/jbupt.200801.88.063, PP. 88-91

Keywords: 视频编码,码率控制,H.264,量化参数,率失真优化

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Abstract:

基于视频图像编码前的参数信息和I帧图像复杂度的特征量分析,建立算法模型,提出了精确预测初始量化参数(IQPP)算法,该算法可准确预测初始量化参数.实验结果表明,在低比特率视频应用中,IQPP算法对于视频图像的码率控制精度和率失真优化效果较以往方法有明显提高,而且可以获得较高的平均峰值信噪比(PSNR)值和稳定的重建图像质量.

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