Method and device for selecting optimal prediction mode of chroma component and electronic device

Abstract

The invention provides a method and device for selecting an optimal prediction mode of a chroma component and an electronic device, belonging to the technical field of video compression. The method comprises the steps of as a video encoder processes a short video, extracting a first encoding unit, calculating an optimal prediction mode of a luma component of the first encoding unit, when the division depth to which the first encoding unit belongs is not a preset maximum division depth, obtaining a first tag value, obtaining an optimal prediction mode of a luma component of a second encoding unit, and judging whether or not the optimal prediction mode of the luma component of the first encoding unit can be used as the optimal prediction mode of the chroma component of the first encoding unit based on the first tag value or the optimal prediction mode of the luma component of the second encoding unit and the first tag value. Thus, the repeated analysis process of the optimal prediction mode of the chroma component and the optimal prediction mode of the luma component is skipped, the analysis time of the optimal prediction mode of the chroma component is saved, and the efficiency andthe real-time performance of the video analysis are improved as a whole.

Description

technical field [0001] The present invention relates to the technical field of video compression, in particular, to a method, device and electronic equipment for selecting an optimal prediction mode of a chrominance component. Background technique [0002] With the continuous improvement and update of users' demand for video compression technology, more and more short videos and other video materials are added with rich special effects to increase the amount of video reading. The special effect technology added to the short video does greatly enrich the content of the scene, but it also takes a lot of time to process these videos. [0003] When traditional video encoders process these short videos, they often use the AVS2 coding standard to encode the short video as an I frame (intra-frame coding frame), and traverse to select the best prediction angle of brightness and The optimal prediction angle of chroma, the intra prediction angle of chroma component and luma component...

AI Technical Summary

Problems solved by technology

The special effect technology added to the short video does greatly enrich the content of the scene, but it also takes a lot of time to process these videos

[0003] When traditional video encoders process these short videos, they often use the AVS2 coding standard to encode the short video as an I frame (intra-frame coding frame), and traverse to select the best prediction angle of brightness and The optimal prediction angle of chroma, the intra prediction angle of chroma component and luma component in the AVS2 coding standard often has many repeated parts, resulting in many repetitions of the best prediction mode of chroma component and the best prediction mode of luma component part, but most video encoders do not skip the analysis process of the repeated parts of the best prediction mode of the chroma component and the best prediction mode of the luma component when processing these short videos, thus reducing the efficiency of video analysis as a whole and real-time

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