Video data recovery method and device

Abstract

The present invention provides a video data restoration method and device, which relate to the technical field of video processing. The method includes: if there is an error block in the current frame, obtaining a reference block corresponding to the error block from a first reference frame of the current frame; Based on the first motion vector for the reference block, determine the prediction block for the error block; based on the gradient data of a plurality of pixels adjacent to the error block in the current frame, determine the continuity data for the prediction block, the continuity data is used for Describe the continuity of the texture of the prediction block and the texture of pixels around the error block; if the continuity data is less than or equal to the continuity data threshold, replace the error block in the current frame with the prediction block. If the continuity is consistent, the erroneous block in the current frame can be replaced with a predicted block. The invention ensures the matching effect of the prediction block and the current frame, thereby improving the restoration effect of the current frame.

Description

technical field [0001] The present invention relates to the technical field of video processing, in particular to a method and device for restoring video data. Background technique [0002] A frame is the basic unit of video data. During the storage, reading, and transmission of video data, if a decoding error occurs in the current frame, not only the current frame must be discarded, but subsequent frames may have reference dependencies on the current frame. Properly decoded so that frames before the next independently decodable frame are discarded, resulting in less reliable storage, retrieval, and transmission of video data. Therefore, it is necessary to restore the frames where decoding errors occurred. [0003] In the prior art, if an error occurs in the decoded block of the current frame, the decoded block corresponding to the erroneous block can be found in the reference frame of the current frame as a reference block, and the erroneously encoded block is replaced by ...

AI Technical Summary

Problems solved by technology

[0004] However, since the images between different frames are usually different, and the images may contain textures in different directions, if the decoded block corresponding to the erroneously encoded block is directly found in the reference frame to replace the erroneously encoded block, the restored frame The effect is poor, it is difficult to effectively ensure the reliability of video data in the process of storage, reading and transmission

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