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由于实时视频数据流在存储或传输中的错误、丢包等原因,解码器接收到的数据流可能不完整,无法正常解码。错误隐藏是解决这个问题的方法之一,文章回顾了当前的主要错误隐藏算法。根据视频编码的特点,对传输信道的错误隐藏算法进行了分类,包括时间、空间、时-空结合以及频域的相关算法,并对它们进行了比较和评述;同时对存储系统的错误隐藏算法也进行了分类比较和评述。最后对未来研究方向进行了展望,给出了若干值得研究的问题。
Due to the error in the storage or transmission of the real-time video data stream, packet loss and other reasons, the data stream received by the decoder may be incomplete and can not be decoded normally. Error concealment is one of the ways to solve this problem, and the article reviews the current main error concealment algorithms. According to the characteristics of video coding, the error concealment algorithm of transmission channel is classified, including time, space, time-space combination and frequency-domain correlation algorithm, and compared and evaluated. At the same time, the error concealment algorithm Also conducted a classification comparison and review. Finally, the prospect of future research is prospected, and a number of issues worthy of study are given.