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Error Concealment based on Extended Block Matching using Gradient Difference  

김동욱 (전주대학교 정보기술컴퓨터공학부)
김진태 (한서대학교 컴퓨터과학과)
Abstract
The error concealment is very useful technique for real-time communication, such as video conference. In this paper. we propose the error concealment technique to minimize discontinuity of block boundary in consideration of the fact that human visual system is sensitive to discontinuity. The error concealment for each loss block is performed by extended block matching method based on gradient difference. In the simulation result, performance improvement for the proposed technique is on the average 1.32㏈ in comparison with the conventional technique.
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