基于JVT-H017码率控制算法的改进  

Improved Rate Control Algorithm Based On JVT-H017

作　　者：蔡克烜[1] 张长明[1] 于鸿洋[2] 

机构地区：[1]电子科技大学光电信息学院,班610054四川200520501 [2]电子科技大学电子工程学院,四川610054

出　　处：《微计算机信息》2009年第3期265-266,199,共3页Control & Automation

摘　　要：码率控制是视频压缩编码技术中的一个重要组成部分。针对JVT-H017提案中码率控制技术进行了深入详细的探讨,分析该算法的不足,在此基础上进行相应的改进。按照前一幅编码图像的统计特性更加精确的预测当前图像复杂度并进行比特分配。实验结果表明,与JVT-H017算法比较,改进的算法在图像质量提升的同时,使得编码输出比特率更接近于目标比特率。Rate control is a very important part of the video compressing code. This paper discusses the rate control technology in JVT-H017 in detail, analyzes the disadvantage of this algorithm, give the corresponding improvement. By more accurately predicting frame complexity using the statistics of previously encoded frames, perform the bit allocate. The experimental results show that improved method is better rate control performance than that of JVT-H017 in terms of image quality and close to target bit rate.

关 键 词：码率控制 H.264 JVT-H017 图像复杂度 

分 类 号：TP335.3[自动化与计算机技术—计算机系统结构]