视频数据的错误隐藏算法研究

Survey of Error Concealment Technique for Real-Time Video

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。

Decoder will not properly decode the faulty video data due to the bit error or packet loss in storage or transmission.Error concealment is a way to solve this problem and main error concealment algorithms are reviewed in this paper.The error concealment algorithms for transmission channel are classified to temporal,spatial,temporal-spatial and frequency domain algorithm that are analyzed and compared.The error concealment algorithms for storage system are also analyzed and compared.The future directions and some of the researching problems are also addressed.