基于加权预测的宏块级码率控制算法

MB Layer Rate Control Algorithm Based on Weighting-prediction

针对H.264的简单线性预测模型的误差,考虑视频序列的时空相关性,提出了基于加权预测的宏块层码率控制算法。实验结果表明,与JVT-G012提案相比,该方法在准确控制码率的同时,图像的视觉质量也得到提高。

In view of simple linear prediction model error in H. 264, considered the space and time relevance of the video frequency sequence, the scheme, which macro blocks level rate control, based on weighting prediction is proposed. The experiments show that compared to JVT-G012 in JVT, the method can control the rate more accurately and the average PSNR of all testing sequences is improved.