Depth image coding method based on double parabolic partitioning template

A depth map coding and parabolic technology, which is applied in the field of video coding to achieve the effect of reducing the number, improving the coding efficiency and reducing the amount of calculation.

Active Publication Date: 2017-08-18
成都图必优科技有限公司
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Problems solved by technology

[0005] In order to improve the defects of the existing depth map coding method and better code the depth map to improve the synthesis quality of the virtual viewpoint, the present invention provides a depth map coding method based on a double parabolic partition template

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  • Depth image coding method based on double parabolic partitioning template
  • Depth image coding method based on double parabolic partitioning template
  • Depth image coding method based on double parabolic partitioning template

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Embodiment Construction

[0027] In the following, the method of the present invention will be further described in detail in conjunction with the accompanying drawings and specific depth coding to illustrate the effectiveness of dual parabolic partitions in depth map coding.

[0028] In the implementation, the steps to generate the double parabolic partition template table are as follows:

[0029] Step 1. Traverse the start point, end point and third point for the two cases where the start point and end point of 8*8, 16*16, and 32*32 are on the upper-lower opposite side and the left-lower adjacent side

[0030] For blocks of 8*8, 16*16, and 32*32 (corresponding to k=1, 2, and 4 respectively), for the case of upper-lower opposite sides, the S coordinate of the starting point is from (k, k) to (8k, k), The step size is k, the coordinate of the end point E is from (k, 8k) to (8k, 8k), the step size is k, the coordinate of the third point P is (mk, nk) (1≤m, n≤8) and it is not in the SE connection On the...

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Abstract

The present invention belongs to the technical field of video coding, and particularly relates to a depth image coding method based on a double parabolic partitioning template. The method comprises the steps of fitting a depth boundary split line by using two parabolas, so as to divide a block into two partitioning templates; and adjusting the obtained partitioning templates. Compared with the existing Wedgelet mode, the partitioning split line is fit by using double parabolas, so that the partitioning boundary is smoother, the boundary of an object in the depth image can be described by using a larger block, and complex boundary conditions in reality can be better accustomed to; further, only some templates are generated by using double parabolas, and other templates are obtained through rotating and symmetry, so that calculation amount for template generation is greatly reduced, and the generated templates are more consistent. Thresholds are set for repeatability of 16*16 and 32*32 templates, so that the templates are reduced, and the later coding time is shortened.

Description

technical field [0001] The invention belongs to the technical field of video coding, and in particular relates to a depth map coding method based on a double parabola partition template. Background technique [0002] With the development of computer communication and display technology, 3D video has attracted extensive attention and research from the industrial and academic circles at home and abroad because it can provide the audience with an immersive stereoscopic audio-visual experience. The 3D video system uses DIBR view synthesis technology to generate texture video at any viewpoint position by using texture image and depth image, avoiding the data volume caused by direct transmission of a large amount of texture video data. [0003] The depth image reflects the distance information from the object to the camera in the 3D scene, and is composed of most of the flat areas and a few sharp edges. The coding quality of the edge part directly affects the synthesis quality of ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/597H04N13/00
Inventor 段昶申宇欢朱策
Owner 成都图必优科技有限公司
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