Depth and color code rate distribution method for three-dimensional video coding
A technology for 3D video and bit rate allocation, which is applied in image communication, electrical components, stereoscopic systems, etc., and can solve the problems of not fully considering the optimal bit rate allocation of color video and depth video, the difference, the influence of virtual viewpoint rendering, etc. , to avoid virtual view point rendering operations, improve rate-distortion performance, and simplify the operation process of bitrate allocation
Inactive Publication Date: 2014-04-16
NINGBO UNIV
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[0003] However, the existing 3D video coding research has not fully considered the optimal bit rate allocation of color video and depth video, because: on the one hand, due to the coding distortion of color video and depth video, the virtual viewpoint On the other hand, each video sequence has its own characteristics, and the coding distortion of color video and depth video of different test video sequences have different effects on virtual viewpoint rendering.
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[0052] The present invention will be further described in detail below with reference to the embodiments of the accompanying drawings.
[0053] A depth and color code rate allocation method for three-dimensional video coding proposed by the present invention, the overall implementation block diagram is as follows figure 1 shown, it includes the following steps:
[0054] ① Define the unprocessed color video and its corresponding depth video captured by the external 3D video capture tool with YUV color space as the original 3D video. In the air domain, the original 3D video includes the original left viewpoint 3D video and the original right Viewpoint 3D video, the original left-view 3D video includes the original left-view color video and the original left-view depth video. The original left-view color video is mainly composed of original left-view color images of several frame groups, and the original left-view depth video mainly consists of several The original left-view dep...
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The invention discloses a depth and color code rate distribution method for three-dimensional video coding. Under the condition of obtaining the optimum virtual viewpoint drawing quality, a relation model of coding quantitative step sizes of original left viewpoint color videos and original right viewpoint color videos and coding quantitative step sizes of original left viewpoint depth videos and original right viewpoint depth videos is built in a secondary fitting method, further color and depth bit distribution is described as a standard univariate cubic equation, the optimum original coding quantitative parameters after coding of the original left viewpoint color videos, the original right viewpoint color videos, the original left viewpoint depth videos and original right viewpoint depth videos under a certain code rate are obtained, and finally the optimum original coding quantitative parameters are used for coding the original left viewpoint color videos, the original right viewpoint color videos, the original left viewpoint depth videos and original right viewpoint depth videos. By aid of the method, rate distortion performance of virtual viewpoint videos is improved, and the code rate distribution operation process is simplified.
Description
technical field [0001] The invention relates to a coding and compression method for video signals, in particular to a depth and color code rate allocation method for three-dimensional video coding. Background technique [0002] 3D video system is more and more popular because it can provide a new visual experience of three-dimensional sense and viewpoint interactivity. prospect. Multi-view video plus depth (MVD) is a 3D scene information representation method currently recommended by ISO / MPEG. MVD data adds the depth information of the corresponding viewpoint on the basis of the multi-viewpoint color image. It uses the color image of the reference viewpoint and the depth information corresponding to each pixel in the color image of the reference viewpoint. Depth Image Based Rendering (DIBR) technology is used to synthesize virtual viewpoint images of 3D scenes. [0003] However, the existing research on 3D video coding has not fully considered the optimal bit rate allocat...
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IPC IPC(8): H04N13/00H04N15/00
Inventor 蒋刚毅朱高锋郁梅王晓东彭宗举邵枫李福翠
Owner NINGBO UNIV