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Channel Condition Adaptive Error Concealment using Scalability Coding  

Han Seung-Gyun (경희대학교 전자정보학부)
Park Seung-Ho (경희대학교 전자정보학부)
Suh Doug-Young (경희대학교 전자정보학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.29, no.1B, 2004 , pp. 8-17 More about this Journal
Abstract
In this paper: we propose the adaptive error concealment technique for scalable video coding over wireless network error prove environment. We prove it is very effective that Error concealment techniques proposed in this paper are applied to scalable video data. In this paper, we propose two methods of error concealment. First one is that the en·or is concealed using the motion vector of base layer and previous VOP data. Second one is that according to existence of motion vector in error position, the error is concealed using the same position data of base layer when the motion vector is existing otherwise using the same position data of previous VOP when the motion vector is 0(zero) adaptively. We show that according to various error pattern caused by condition of wireless network and characteristics of sequence, we refer decoder to base layer data or previous enhancement layer data to effective error concealment. Using scalable coding of MPEG-4 In this paper, this error concealment techniques are available to be used every codec based on DCT.
Keywords
scalable coding; wireless; error concealment;
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