Motion vector recovery by surrounding region matching based on gradient difference

  • Authors:

  • Dong-Wook Kim;Eung-Kwan Kang;Jin-Tae Kim;Yong-In Yoon;Jong-Soo Choi

  • Affiliations:

  • Dept. Telecommunication Eng., Jeonju Univ., Chunbuk, Korea;Dept. Multimedia Eng., Jeonju Univ., Chunbuk, Korea;Dept. Computer & Information Sci., Hanseo Univ., Chungnam, Korea;Dept. Image Eng., Graduate School of Advanced Imaging Science, Multimedia, and Film, Chung-Ang University, Seoul, Korea;Dept. Image Eng., Graduate School of Advanced Imaging Science, Multimedia, and Film, Chung-Ang University, Seoul, Korea

  • Venue:
  • PDCAT'04 Proceedings of the 5th international conference on Parallel and Distributed Computing: applications and Technologies
  • Year:
  • 2004

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Abstract

The error concealment is a very useful technique for real-time communication systems, such as video conferencing. In this paper, we propose an error concealment technique designated to minimize discontinuities between block boundaries in consideration of the fact that the human visual system is sensitive to discontinuities. Error concealment for each loss block is performed by surrounding region matching of the loss block based on gradient difference. By computer simulation, the performance improvement for the proposed technique is shown to be superior than 1.32 dB in terms of the PSNR, in comparison with the conventional techniques.