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由于解码器后处理错误隐藏技术主要在解码器端完成,不会在码流信息中加入冗余信息,所以解码器后处理错误隐藏技术在实践中得到广泛应用。目前解码器后处理错误隐藏方面已经提出了多种有效的方法,在对比现有的几种时空域错误隐藏的算法的基础上提出了针对视频流中I帧,P帧图像中不同的出错区域采用自适应的时空域错误隐藏算法来恢复原图像,模拟测试表明,该算法能够有效提高视频质量。
Since the decoder post-processing error concealment technology is mainly done on the decoder side, the redundant information will not be added in the stream information, so the decoder post-processing error concealment technique is widely used in practice. At present, a variety of effective methods have been proposed in the post-processing error concealment of the decoder. Based on the comparison of several existing algorithms for concealing errors in the space-time domain, aiming at different error regions in I-frames and P-frames in the video stream, The original image is recovered by the adaptive spatio-temporal domain error concealment algorithm. Simulation results show that this algorithm can effectively improve the video quality.