Depth modeling mode decision method for 3D-HEVC (High Efficiency Video Coding) depth map coding

Abstract

The invention discloses a depth modeling mode decision method for 3D-HEVC (High Efficiency Video Coding) depth map coding. Classification skipping decision is performed on a depth map macro block, whether to early terminate a contour mode is judged according to the size of a prediction unit, and rate-distortion optimization is performed on a depth modeling mode to obtain an optimal depth modeling mode; the steps are as follows: starting a depth modeling mode decision process of the depth map macro block; classifying a current depth block into a near region, a middle region and a far region; skipping unnecessary depth blocks; performing early termination of the contour mode according to the size of the current prediction unit; performing a rate-distortion optimization process of a depth modeling mode decision; and determining the optimal depth modeling mode of a depth map. The depth modeling mode decision method for the 3D-HEVC depth map coding provided by the invention adopts classification skipping of blocks and early termination of the contour mode, the coding performance is better, the code rate has only a small rise, the reduction of peak signal to noise ratio can be neglected, and compared with an original 3D-HEVC coding method, the depth modeling mode decision method saves 31.33% of coding time on average, thus the method can be applied to real-time coding.

Description

technical field [0001] The invention belongs to the technical field of video coding, and specifically relates to a method for determining a depth modeling mode of intra-frame coding in video coding, in particular to a depth modeling method for depth map coding in high-efficiency video coding standards 3D video extensions Mode decision method. Background technique [0002] In recent years, with the popularization of high-definition video and various network videos, video compression technology has faced a lot of challenges. ISO / IEC's Motion Picture Experts Group (MPEG) and ITU-T's Video Coding Experts Group (Video Coding Expert Group, VCEG) formed the Joint Collaborative Team on Video Coding (JCT-VC), And jointly formulated the high-efficiency video coding standard H.265 / HEVC (High Efficiency Video Coding). The new generation of video coding standard H.265 / HEVC has added many new coding tools. Compared with the previous generation of video coding standard H.264 / AVC, the cod...

AI Technical Summary

Problems solved by technology

However, the mode selection of DMM decision-making needs to traverse all candidate modes, which leads to a huge amount of calculation and a long calculation time, which must consume a lot of encoding time, which is not conducive to real-time encoding

Therefore, the calculation complexity of this method is high, and it is difficult to apply in real time.

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