Enhanced Side Information Generator with Accurate Evaluations in Block-Based Wyner-Ziv Video Coding

  • Authors:

  • Chang-Ming Lee;Jui-Chiu Chiang;Zhi-Heng Chiang;Kuan-Liang Chen;Wen-Nung Lie

  • Affiliations:

  • Department of Electrical Engineering, and Department of Communication Engineering, National Chung Cheng University, Chia-Yi, Taiwan, ROC 621;Department of Electrical Engineering, and Department of Communication Engineering, National Chung Cheng University, Chia-Yi, Taiwan, ROC 621;Department of Communication Engineering, National Chung Cheng University, Chia-Yi, Taiwan, ROC 621;Department of Electrical Engineering,;Department of Electrical Engineering, and Department of Communication Engineering, National Chung Cheng University, Chia-Yi, Taiwan, ROC 621

  • Venue:
  • PSIVT '09 Proceedings of the 3rd Pacific Rim Symposium on Advances in Image and Video Technology
  • Year:
  • 2009

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Abstract

Wyner-Ziv coding (WZC) has received a lot of attention lately. Based on the block unit for WZ-/intra-coding and the temporal distance between two consecutive key blocks, two techniques are proposed to improve the performance of block-based distributed video coding. Depending on the spatio-temporal analysis, the first method adjusts the mode assignment to a more precise generation of side information. In addition, the second method carries out the correlation calculation in the encoder side to ensure a better statistical estimation between the side information frame and the original frame. Thus, the more accurate side information combined with the more reliable statistical parameters results in an improved coding efficiency. The simulation results show that the compound of these two proposed methods has an improvement up to 2.7 dB with respect to the previous work in block-based WZC.