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

作　　者：李锡辉[1] 汤海蓉[2] 向长喜[1] 

机构地区：[1]湖南信息职业技术学院计算机系,长沙410200 [2]湖南文理学院计算机系,常德415003

出　　处：《科学技术与工程》2007年第23期6222-6224,6243,共4页Science Technology and Engineering

摘　　要：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.

关 键 词：码率控制 平均绝对误差 运动内容复杂度 加权预测 

分 类 号：TP335.3[自动化与计算机技术—计算机系统结构]