Method, device, electronic device, and computer-readable storage medium for motion estimation

Abstract

Embodiments of the present invention provide a motion estimation method, device, electronic equipment, and computer-readable storage medium, which acquire a reference frame to be predicted in a set of candidate reference frames corresponding to a target prediction unit, where the reference frame to be predicted is a candidate reference frame For the candidate reference frames in the set that meet the first preset condition, perform pixel search on the reference frame to be predicted according to the pixel search rule corresponding to the reference frame to be predicted to obtain candidate matching blocks, and select the matching block with the smallest rate-distortion cost among the candidate matching blocks, Determine the best matching block for the target PU. Based on the above processing, the pixel search is only performed on candidate reference frames satisfying the first preset condition, instead of traversing all candidate reference frames and performing pixel search on each candidate reference frame, thereby improving video coding efficiency.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a motion estimation method, device, electronic equipment and computer-readable storage medium. Background technique [0002] With the rapid development of computer network technology, in order to reduce the bandwidth and storage space occupied by video transmission, it is necessary to encode the transmitted video. When encoding a video, each video frame in the video may be divided into multiple image blocks, which are also referred to as encoding blocks. In the process of encoding the coding block, the coding block needs to be predicted. At this time, a coding block can be divided into multiple prediction units, wherein the prediction of the coding block can include: performing intra-frame prediction on the coding block and The coded block is subjected to inter-frame prediction, and the inter-frame prediction is to search for an image block similar to the predic...

AI Technical Summary

Problems solved by technology

[0004] It can be seen that in the related art, it is necessary to traverse all candidate reference frames and perform a pixel search on each candidate reference frame to determine the best matching block of the prediction unit, resulting in high complexity of motion estimation, which in turn reduces video encoding efficiency

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