Abstract:

Compressed streams in the video communication channel transmission, for reasons like the channel is not ideal and so on, are prone to damage or loss of data packets. In order to combat channel error to improve video quality, a spatial error concealment method for intracoded picture is proposed on the basis of postprocessing H.264 edge detection and multidirectional interpolation, which is in accordance with the direction of the image boundary information to select multiple error concealment method of interpolation. The experimental results show that for the image with a border region, this approach effectively improves the hidden effects of error images with a less complex algorithm. The feasibility of the method is verified, which provides a certain reference value for engineering applications.

Key words: video communication, error concealment, edge detection, multidirectional interpolation, video quality