HEVC intra-frame angle mode selection method, device and equipment and readable storage medium

Abstract

The invention belongs to the field of video coding, and discloses an HEVC intra-frame angle mode selection method, device and equipment and a readable storage medium, and the HEVC intra-frame angle mode selection method comprises the steps: obtaining a learning video frame image, and dividing the learning video frame image into a plurality of PU images; constructing a deep convolutional neural network; and learning and predicting the optimal angle mode of the current PU image from the PU image to obtain a deep convolutional neural network prediction model, embedding the deep convolutional neural network prediction model into an original HEVC coding process, and directly obtaining n mode candidate lists of an optimal angle mode through the deep convolutional neural network prediction modelto replace 35 angle modes during video frame image coding. According to the method, the deep convolutional neural network is introduced into HEVC video coding, the problem of PU angle mode selection suitable for being solved is learned from an original input video frame image, the video coding quality can be ensured, and the problem of long time in the video coding process is well solved.

Description

technical field [0001] The invention belongs to the field of video coding, and relates to a HEVC intra-frame angle mode selection method, device, equipment and a readable storage medium. Background technique [0002] The new generation of high-efficiency video coding HEVC (High Efficiency Video Coding) is the latest video coding standard. The intra-frame angle mode selection algorithm is to minimize the coding distortion after video coding by selecting the best angle mode. In HEVC, a video image is first divided into several non-overlapping coding tree units (Coding TreeUnit, CTU), and then the prediction block (Prediction Unit, PU) corresponding to the CTU has 35 kinds of angle modes for intra prediction. Search, find out the corresponding optimal rate distortion (Rate Distortion, RD) cost value RdCost_0 and its corresponding prediction mode for the prediction block with a size of 64×64, and calculate the corresponding The optimal rate-distortion cost values ​​RdCost_1, Rd...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of complex encoding, cumbersome selection process, and excessive calculation amount in the above-mentioned prior art, and provide a HEVC intra-frame angle mode selection method, device, equipment and readable storage medium

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