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《Journal of Zhejiang University(Engineering Science)》 2009-09
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Error concealment for whole frame losses in H264

LING Bo,GU Wei-kang,DU Xin(Institute of Information and Communication Engineering,Zhejiang University,Hangzhou 310027,China)  
An error concealment mechanism based on encoder and decoder was proposed for whole frame packet lost in network transmission.In decoder,some pixels were directly recovered from the previous frame according to the hypothesis of motion continuity.Each 4×4 block was classified to different types in order to recover other invalidated pixels.Then two different methods,one based on motion prediction and block match,another based on spatial interpolation,were used to recover the invalidated pixels.In encoder,both long reference frames and short reference frames were adopted.The reference frames were adjusted to stop error propagation by using the feedback of the receiver.Experimental results show that the method outperforms on both visual quality and peak signal-to-noise ratio(PSNR),and can be effective to stop error propagation.Meanwhile the method can satisfy the real time request.
【Fund】: 国家自然科学基金资助项目(60502006);; 浙江省科技计划资助项目(2007C21007)
【CateGory Index】: TN919.81
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