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Boundary Match and Block Reliability Based Error Concealment Algorithm  

Kim, Do Hyun (한국전자통신연구원)
Choi, Kyoung Ho (목포대학교 전자공학과)
Publication Information
Smart Media Journal / v.6, no.2, 2017 , pp. 9-14 More about this Journal
Abstract
A packet loss in wireless environments causes a severe degradation of video quality in video communications. In this paper, a novel video error concealment algorithm is presented by combining boundary errors and a block reliability measure. The block reliability measure decides the reliability of a block by checking residual errors of a block. In the proposed approach, a motion vector of a missing unreliable block in an inter coded frame is obtained initially based on the motion vector of the same block in the reference frame. Furthermore, if the block in the reference frame is unreliable according to the reliability measure, a new motion vector is decided based on block boundary errors around the initial motion vector. According to our simulations, the proposed approach shows promising results for error concealment in error-prone wireless environments.
Keywords
Error concealment; Block reliability; Packet loss; Boundary matching; Video communications;
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