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计算机工程 ›› 2009, Vol. 35 ›› Issue (13): 222-224. doi: 10.3969/j.issn.1000-3428.2009.13.077

• 多媒体技术及应用 • 上一篇    下一篇

基于宏块编码的MSE计算模型

张 剑1,2,韩国强2   

  1. (1. 广东纺织职业技术学院数字化研究所,佛山 528041;2. 华南理工大学计算机科学与工程学院,广州 510340)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-07-05 发布日期:2009-07-05

Calculating Model of MSE Based on Macro Block Coding

ZHANG Jian1,2, HAN Guo-qiang2   

  1. (1. Digital Institute, Guangdong Institute of Textile Technology, Foshan 528041; 2. School of Computer Science and Engineering, South China University of Technology, Guangzhou 510340)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-07-05 Published:2009-07-05

摘要: 在分析率失真理论的基础上,提出帧内编码宏块模式、帧间编码宏块模型的新思想,并建立均方差失真计算模型。该方法能够全局最优地求得在误码环境下,率失真曲线上的最佳控制点,不仅能够在给定的网络带宽下自适应地调整量化参数,而且可以根据当前网络丢包概率进行帧内宏块刷新,起到较好地抵抗信道误码的效果,对于无线环境中的视频鲁棒编码传输及资源分配,具有较好的参考价值。

关键词: 率失真函数, 信源编码, 帧内预测误码扩散, 帧间误码扩散系数

Abstract: On the base of the theory of rate distortion, the new idea of macro block mode about inner and mutual compiling frame is presented in this paper, and the MSE distortion computation model is built. This method can acquire the optimal control point in the rate-distortion curve under the code error environment from the global optimization perspective, not only self-adaptive adjust the quantization parameter under given network bandwidth but also refresh inner macro block frame according to the current probability of loss of network package, and plays an important effect in counteracting the channel code error, which has a good reference value in the way of transmitting robust video code in wireless environment and allocating resource.

Key words: rate distortion function, source encoding, error code spread of inner frame, factor of error code spread of mutual frame

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