Intra-frame fast coding method based on quality scalable video coding QSHVC

Abstract

The invention relates to the technical field of the remote medical video communication, and specifically relates to an intra-frame fast coding method based on quality scalable video coding QSHVC. Themethod comprises the following steps: excluding the depth with small possibility by using relevance; judging whether a residual coefficient meets Laplace distribution by using a distribution fitting check method; if the residual coefficient meets the Laplace distribution, adopting an inter-layer ILR prediction mode, and skipping the intra-frame Intra prediction mode to realize the early termination; if the residual coefficient does not meet the Laplace distribution, traversing the inter-layer ILR prediction mode and the intra-frame Intra prediction mode, computing a rate-distortion value, andselecting an appropriate depth value through comparison. Through the fast coding method disclosed by the invention, the high computing complexity problem caused by a recursive quad-tree coding unit division in the coding is mainly solved. In the premise of guaranteeing the quality of the video, the coding speed is obviously improved, the method can be used for video conference, remote consultation, remote education, remote medical treatment and video on-demand.

Description

technical field [0001] The present invention relates to the technical field of video communication, in particular to an intra-frame fast coding method based on Quality Scalable High Efficiency Video Coding (QSHVC). Background technique [0002] In recent years, with the development of multimedia technology, computer network and communication technology, remote video technology has become a very fast-growing interdisciplinary high-tech, among which, the development of telemedicine video in remote video technology is particularly prominent; with the development of telemedicine ( With the rapid development of telemedicine, telemedicine is completely changing the existing medical model. Through telemedicine, patients can detect symptoms in time and avoid deterioration of conditions caused by delay in treatment. At the same time, telemedicine is also a new and practical way to improve the medical conditions in remote mountainous areas and backward rural areas in our country. ...

AI Technical Summary

Problems solved by technology

The depth of the coding unit tree corresponds to the size of the coding unit one by one. The best way to select this LCU is to calculate the rate-distortion cost through depth recursion, which will cause higher computational complexity at the encoding end.

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