Video decoding error compensation method and device, storage medium and terminal

Abstract

The invention discloses a video decoding error compensation method and device, a storage medium and a terminal. The video decoding error compensation method comprises the steps that for each lost macro block of a lost area in a current frame, determining an adjacent macro block of the lost macro block and a reference macro block located in a reference frame, wherein the position of the referencemacro block in the reference frame is the same as the position of the lost macro block in the current frame; determining candidate motion vectors of the reference macro block and the adjacent macro block; determining residual energy corresponding to each candidate motion vector according to the residual value of each pixel recorded in the decoding process, wherein the residual energy is the sum ofabsolute values of the residual values calculated according to the size of the lost macro block; and determining a compensation reference vector according to the magnitude of the residual energy corresponding to each candidate motion vector, and compensating the lost macro block by using the compensation reference macro block pointed by the compensation reference vector. Through the technical scheme of the invention, the convenience and accuracy of video decoding error compensation can be improved.

Description

technical field [0001] The present invention relates to the technical field of video data processing, in particular to a video decoding error compensation method and device, a storage medium, and a terminal. Background technique [0002] During video streaming, packet loss or data errors are often caused by network instability, resulting in loss of image quality. [0003] In the prior art, for packet loss, the motion vector of the macroblock will be predicted for the lost macroblock first, and then the most likely closest Fill in the missing macroblocks of the original macroblocks. The specific method is as follows. For the compensation of the lost area of ​​the current frame, a set of candidate motion vectors is first obtained according to a fixed macroblock size (for example, 16 pixels×16 pixels). The candidate motion vectors can come from adjacent macroblocks of the current lost macroblock, or From the reference macroblock at the same location on the reference frame, or...

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Problems solved by technology

[0004] However, in order to improve the accuracy of macroblock edge comparison results, the existing technology requires multiple groups of candidate motion vectors to do difference calculations to reduce the error between the compensated macroblock and the original macroblock, and the bandwidth and calculation amount are large; in addition, due to the loss of There will not be only one macroblock, but a continuous segment, resulting in a decrease in the edge of the lost macroblock that contains correct decoding and reconstruction. In most cases, only one edge remains, so that there are not many correct comparison values, and the error increases. It will affect the edge comparison operation of the next adjacent lost macroblock, causing the error to be passed on all the time, reducing the quality of the compensated video

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