Motion compensation prediction method based on motion vector restraint and weighting motion vector

Abstract

The invention discloses a motion compensation prediction method based on motion vector restraint and a weighting motion vector. The method comprises the following steps that the motion vector restraint analysis is carried out on the motion vector of an encoded module around a current encoding module; the fusion mode encoding is directly carried out on encoding modules in a consistency area where the motion vector meets the restraint condition, and the interframe motion compensation predictive encoding is carried out on encoding modules in a complex area where the motion vector does not meet the restraint condition through the weighting advanced motion vector predictive method. The restraint analysis is carried out on the motion vector, the interframe motion compensation predictive process is detailed, and the weighting AMVP prediction is carried out for a complex scene, so that the accuracy of the interframe prediction is improved without introducing additional encoding information, the encoding performance is improved, and the code rate produced after video compression is reduced.

Description

technical field [0001] The invention belongs to the technical field of video encoding and decoding, in particular to a motion compensation prediction method based on motion vector constraints and weighted motion vectors. Background technique [0002] Digital video technology has been widely used in the field of communication and broadcasting, especially after the 1990s, with the rapid development of Internet and mobile communication technology, the processing and transmission of video information and multimedia information in Internet networks and mobile networks It has become a hot spot in the current information technology research. [0003] Video dominates the information source of human beings in the information age, but the uncompressed original video data is often very huge, which brings great difficulties to storage and transmission. At the same time, there is a lot of information redundancy in the huge video data, which provides sufficient possibilities for video da...

AI Technical Summary

Problems solved by technology

[0025] However, in the existing inter-frame prediction and compensation process, only one reference block in a reference frame is used as the prediction value of the current coding block, and it is difficult for a complex coding block or a coding block inconsistent with the surrounding motion. Make accurate predictions for the current coded block

Therefore, in some complex motion scenes or parts, the accuracy of traditional motion compensation prediction is not ideal, which affects the further improvement of video compression efficiency

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