| 基于Lagrange优化算法的分层实时码率控制算法 |
| |
| 引用本文： | 胡峰,刘佳,陈淑珍. 基于Lagrange优化算法的分层实时码率控制算法[J]. 计算机工程与设计, 2007, 28(17): 4137-4138,4142 |
| |
| 作者姓名： | 胡峰 刘佳 陈淑珍 |
| |
| 作者单位： | 武汉大学,电子信息学院,湖北,武汉,430079;武汉大学,电子信息学院,湖北,武汉,430079;武汉大学,电子信息学院,湖北,武汉,430079 |
| |
| 摘 要： | 由于H.264提案中的码率控制算法存在迭代过程,不适合在实时传输的场合.针对这个不足提出了一种基于Lagrange优化算法的分层实时码率控制算法.该算法分为两层,即GOP层码率控制和帧层码率控制.实验结果表明,该算法在PSNR(峰值信噪比),实际码率以及各帧之间的Q值方面均优于原有算法.
|
| 关 键 词： | Lagrange优化 峰值信噪比 量化 率失真 码率控制 |
| 文章编号： | 1000-7024（2007）17-4137-02 |
| 修稿时间： | 2006-09-22 |
Two-layer real-time rate control algorithm based on Lagrange optimum algorithm |
| |
| HU Feng,LIU Jia,CHEN Shu-zhen. Two-layer real-time rate control algorithm based on Lagrange optimum algorithm[J]. Computer Engineering and Design, 2007, 28(17): 4137-4138,4142 |
| |
| Authors: | HU Feng LIU Jia CHEN Shu-zhen |
| |
| Affiliation: | School of Electronic Information, Wuhan University, Wuhan 430079, China |
| |
| Abstract: | Because for the iterative process in the rate control algorithm of H.264 draft,it is not suitable for real-time transmission.A two-layer real-time rate control algorithm based on Lagrange optimum algorithm is proposed.This algorithm consists of two layers,namely,the GOP layer and the frame layer.The simulation results show that the proposed algorithm is competitive in terms of PSNR,real rate and the Q-value among frames over the original algorithm. |
| |
| Keywords: | Lagrange optimum PSNR quantize rate-distortion rate control |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
