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在数字视频通信中，由于信道不理想等原因容易产生误码，而且误码在空间和时间上的扩散会导致重建图像质量不同程度的下降。最近发展起来的误码掩盖技术就是用来解决这类问题、改进重建视频质量的重要方法之一。在简要介绍误码掩盖的基本原理和相关技术的基础上，着重分析了新近采用的几种误码掩盖方法的应用范围和性能，并指出了它们的发展前景。
In digital video communication, error codes are easily generated due to imperfect channels, and the spatial and temporal spread of error codes can lead to different degrees of degradation of reconstructed images. The recently developed bit error concealment technique is one of the important ways to solve such problems and improve the quality of reconstructed video. Based on the brief introduction of the basic principles of error concealment and related technologies, the application range and performance of several recently adopted error concealment methods are analyzed, and their development prospects are pointed out.