a new adaptive algorithm for image group structure

Zheng Min

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a new adaptive algorithm for image group structure

更新时间：2023-11-14

- a new adaptive algorithm for image group structure
- Advanced Engineering Sciences Vol. 43, Issue Z1, Pages: 165-168(2011)
- 作者机构：
  
  四川大学
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011，
  
  Published Online：21 April 2011，
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郑敏.(研究生论坛)一种新的自适应图像组结构算法的研究[J].工程科学与技术,2011,43(Z1):165-168.

Zheng Min. a new adaptive algorithm for image group structure. [J]. Advanced Engineering Sciences 43(Z1):165-168(2011)
郑敏.(研究生论坛)一种新的自适应图像组结构算法的研究[J].工程科学与技术,2011,43(Z1):165-168. DOI：

Zheng Min. a new adaptive algorithm for image group structure. [J]. Advanced Engineering Sciences 43(Z1):165-168(2011) DOI：

摘要

中文摘要: 本文针对固定图像组结构不能充分利用视频帧之间的相关性，提出一种新的自适应图像组结构方案。该方案主要利用WZ帧和相应的边信息之间差值的概率分布模型对成功解码WZ帧所需比特进行估计，并通过码率估计动态地选取合适的图像组结构。通过实验仿真结果表明：在不明显增加编码复杂度的情况下，新的自适应图像组结构比固定图像组结构的峰值信噪比(PSNR)提高了约0.4~0.7dB。

Abstract

Abstract: For the fixed group structure (GOP) is not use of the correlation between video frames fully

a new adaptive GOP was proposed. The proposed algorithm estimated the bit rate necessary for successful decoding of Wyner-Ziv frames

which relied on distribution modeling the statistics of the residual between the side information and the WZ frame. Then

the encoder dynamically selected the image group structure by means of bit rates. The new algorithm can further improve the performance of the entire coding system by exploiting the correlation between video frames. The simulation results showed a significant gain in the average PSNR that can reach 0.4~0.7dB compared with the fixed-GOP coding

meanwhile maintaining a low encode complexity.

关键词

分布式视频编码Wyner-Ziv自适应图像组结构边信息

Keywords

Distributed Video CodeWyner-Zivadaptive GOP structureside information

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The Optimization of Side Information with Several Strategies for Distributed Video Coding

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四川大学电子信息学院,图像信息研究所四川

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