Motion estimation method, device, electronic device, and computer-readable storage medium

Abstract

A motion estimation method and device, an electronic apparatus and a computer readable storage medium. The method comprises: acquiring image information of a frame where a current prediction unit is located, performing advanced motion vector prediction by using the image information to obtain a first initial motion vector, determining a motion vector having a minimum rate distortion cost, among the first initial motion vector and motion vectors of adjacent layer coding blocks of the coding block where the prediction unit is located, as a second initial motion vector, and performing pixel search on the basis of the second initial motion vector to obtain a target matching block. By applying the embodiments of the present application, a second initial motion vector having a smaller rate distortion cost can be obtained, a target matching block that is a closer match to the prediction unit can be obtained by using the second initial motion vector to perform pixel search, thereby improving the accuracy of the matching block of the prediction unit.

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 continuous development of multimedia digital video applications and the continuous improvement of people's demand for video cloud computing, in the process of video transmission, in order to reduce the bandwidth and storage space occupied during transmission, it is necessary to encode the video. Each video frame is divided into image blocks, which are also called coding blocks. When coding a coding block, prediction is first performed, and the coding block may be divided into smaller prediction units during prediction. Prediction includes intra-frame prediction and inter-frame prediction. Inter-frame prediction is to search for an image block similar to the prediction unit in the reference frame as a matching block. The key techn...

AI Technical Summary

Problems solved by technology

The existing technology only uses the motion vector of the temporal adjacent block of the coding block where the prediction unit is located and the motion vector of the spatial domain adjacent block of the coding block where the prediction unit is located to determine the initial motion vector, and the obtained matching block of the prediction unit is not accurate enough

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