A 3D video depth image intra prediction mode selection method and system

Abstract

The present invention proposes a method and system for selecting an intra-frame prediction mode of a 3D video depth image. First, the probability distribution between the minimum rough rate-distortion cost in the mode list and its corresponding mode as the optimal intra-frame prediction mode is roughly determined through statistics; according to the prior probability distribution, the threshold value of the minimum rough rate-distortion cost is obtained; Compare the minimum rough rate-distortion cost of the coarse mode list with the size of the threshold, if the minimum rough rate-distortion cost is less than the threshold, skip the calculation of the DMM mode, and only set the intra prediction mode corresponding to the minimum rate-distortion cost as a candidate Intra prediction mode. The present invention utilizes the minimum rough rate-distortion cost and its corresponding mode as the optimal intra-frame prediction mode has a high correlation, and can reduce the candidates for complete rate-distortion calculation without adding additional overhead Number of HEVC intra prediction modes and depth model modes.

Description

technical field [0001] The invention belongs to the technical field of video encoding and decoding, and in particular relates to a method and system for selecting a 3D video depth image intra-frame prediction mode. Background technique [0002] The earliest 3D video can be traced back to 1922. Although 3D movies have brought people an immersive feeling and restored the life we ​​can touch, but due to the release conditions at that time and the purpose of commercial profits, most of the Movie studios are still stuck in 2D production. In recent years, with the advent of the digital age, video acquisition, storage, transmission, and playback equipment have been greatly improved. Since "Avatar" was released in December 2009, 3D video has also re-entered the people's field of vision and has become a popular entertainment method for the masses. However, 3D video can only stay at the theater stage at present. This kind of 3D video is limited by the viewing position and 3D glasses...

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Problems solved by technology

[0002] The earliest 3D video can be traced back to 1922. Although 3D movies have brought people an immersive feeling and restored the life we ​​can touch, but due to the release conditions at that time and the purpose of commercial profits, most of the Film studios are still stuck in 2D production

[0018] Although the above-mentioned depth intra-frame prediction mode selection method has reduced the intra-frame prediction coding time of the depth image by one time, the complexity of the depth image intra-frame coding is still too high, and now common multimedia terminals (including mobile phones, tablet computers, digital The computing power of cameras) cannot realize its real-time application, which has also become an important obstacle to the commercialization of 3D video in these mobile multimedia terminals in the future

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