Depth map encoding method based on double parabolic partition template

A technology of depth map coding and parabola, which is applied in the field of video coding to achieve the effects of enhancing consistency, solving coding problems, and improving coding efficiency

Active Publication Date: 2019-08-20
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 map encoding method based on double parabolic partition template
  • Depth map encoding method based on double parabolic partition template
  • Depth map encoding method based on double parabolic partition 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. Traversing the starting point, ending point and third point of the blocks of 8*8, 16*16, and 32*32 in the two cases where the starting point and the ending point 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 coordinates of the end point E are (k, 8k) to (8k, 8k), the step size is k, and the coordinates of the third point P are (mk, nk) (1≤m≤8, 1≤n≤8) And...

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Abstract

The invention belongs to the technical field of video coding, and specifically relates to a depth map coding method based on a double-parabola partition template, which uses two parabolas to fit the dividing line of the depth boundary, divides a block into two partition templates, and adjusts the obtained partition template The present invention uses double parabolas to fit the partition dividing line. Compared with the existing Wedgelet, the dividing boundary is smoother, and larger blocks can be used to describe the boundary of objects in the depth map, which can better adapt to complex boundaries in reality. situation; and only part of the templates are generated with double parabolas, and other templates are obtained by rotation and symmetry, which greatly reduces the amount of calculation for template generation and enhances the consistency of template generation. Set the threshold for template repeatability of 16*16 and 32*32, which reduces the number of templates and optimizes the subsequent encoding time.

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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/597H04N13/161
Inventor 段昶申宇欢朱策
Owner 成都图必优科技有限公司
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