中山大学学报自然科学版 ›› 2012, Vol. 51 ›› Issue (1): 45-49.

• 研究论文 • 上一篇    下一篇

用于视频多播传输的压缩传感实现方法研究

赵慧民1,2,郭一缜2,丁晓艳2,朱 立1   

  1. (1.广东技术师范学院电子与信息学院,广东 广州 510665;2.西安邮电学院通信与信息工程学院,陕西 西安 710121 )
  • 收稿日期:2011-09-28 修回日期:1900-01-01 出版日期:2012-01-25 发布日期:2012-01-25

Method of Video Multicast Achieved Based on Compressed Sensing

ZHAO Huimin1,2, GUO Yizhen2,DING Xiaoyan2,ZHU Li1   

  1. (1.School of Electronic and Information,Guangdong Polytechnic Normal University,Guangzhou 510665,China;(2.School of Communication and Information Engineering,Xian University of Posts and Telecommunication,Xian 710121,China)
  • Received:2011-09-28 Revised:1900-01-01 Online:2012-01-25 Published:2012-01-25

摘要: 在较高的包丢失率和噪声信道环境下,提高视频传输的图像质量是通信技术应用的关键。基于压缩传感理论,提出一种实现多播传输的视频图像解码方法。通过研究测量矩阵与稀疏基的最佳配置关系以及视频帧间相关性,实现了一种视频帧内重加权l1范数解码和基于运动矢量的帧间解码。在噪声和包丢失信道模型下,通过与软投影解码实验比较,说明了实现方法的有效性。

关键词: 视频多播, 压缩传感, 矩阵, 解码

Abstract: With higher packages loss ratio channel and noise channel, improving image performance of video multicast transmission is an importance problem for communication technology. Based on compressed sensing,a decoding method of recover image was achieved as videos are suitable for multicast transmission channel. By investigating the best configuration of measurements matrix and sparse bases as well as video interframe correlation,the reweight l1-minimization decoding of video intra-frame and interframe decoding with motion estimation were realized. At random Gaussian noise and loss ratio channel model, comparing the method with Softcast, experiment results show that the method is effective.

Key words: video multicast, compressed sensing, matrx, decoding

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