Error Resilient Coding Based on Reversible Data Embedding Technique for H. 264/AVC Video
Error Resilient Coding Based on Reversible Data Embedding Technique for H. 264/AVC Video
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DOI：
10.1109/icme.2005.1521636
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发表时间：
2005-07
期刊：
影响因子：
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通讯作者：
W. Lie;Tom C.-I. Lin;Dung-Chan Tsai;Guo-Shiang Lin
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文献类型：
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作者：
W. Lie;Tom C.-I. Lin;Dung-Chan Tsai;Guo-Shiang Lin
提出了一种基于处方的差错隐藏方法。PEC依赖于在编码器侧对I帧的隐藏错误图像（CEI）和P帧的最佳错误隐藏方案的预分析。CEI用于在对损坏的帧内编码MB进行错误隐藏（通过空间内插或零运动）之后增强解码器侧的图像质量。针对每个损坏的帧间编码MB评估一组预先选择的错误隐藏方法，以确定解码器的最佳错误隐藏方法。CEI和方案索引都被认为是解码器的处方，并基于可逆数据嵌入技术与视频比特流一起沿着传输。实验结果表明，当丢包率为20%时，在一定的码率下，该方法可以使PSNR提高1.48dB
In this paper, a prescription-based error concealment (PEC) method is proposed. PEC relies on pre-analyses of the concealment error image (CEI) for I-frames and the optimal error concealment scheme for P-frames at encoder side. CEI is used to enhance the image quality at decoder side after error concealment (by spatial interpolation or zero motion) of the corrupted intra-coded MBs. A set of pre-selected error concealment methods is evaluated for each corrupted inter-coded MB to determine the optimal one for the decoder. Both the CEI and the scheme indices are considered as the prescriptions for decoder and transmitted along with the video bit stream based on a reversible data embedding technique. Experiments show that the proposed method is capable of achieving PSNR improvement of up to 1.48 dB, at a considerable bit-rate, when the packet loss rate is 20%