A hybrid motion compensated 3-d video coding system for blocking artifacts reduction

  • Authors:

  • Cho-Chun Cheng;Wen-Liang Hwang;Zuowei Shen;Tao Xia

  • Affiliations:

  • Institute of Information Science, Academia Sinica, Taipei, Taiwan;Institute of Information Science, Academia Sinica, Taipei, Taiwan;Department of Mathematics, National University of Singapore, Singapore;Center for Wavelet, Approximation and Information Processing (CWAIP), National University of Singapore, Singapore

  • Venue:
  • PCM'05 Proceedings of the 6th Pacific-Rim conference on Advances in Multimedia Information Processing - Volume Part I
  • Year:
  • 2005

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Abstract

We compare, both objectively and subjectively, the performance of various advanced motion compensation methods, including overlapped block motion compensation (OBMC) and control grid interpolation (CGI), in a 3-D wavelet based coding system. Our results indicate that an OBMC sequence usually has a higher PSNR than those of the other methods, while a CGI sequence usually has the least number of blocking artifacts. We combine these two methods in a hybrid system in order to achieve better visual quality and maintain satisfactory coding efficiency simultaneously. The objective and subjective results indicate that the proposed hybrid method removes more than 50% of blocking artifacts of an OBMC sequence, while simultaneously maintaining a high PSNR performance.