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A Resampling Method Based on Depth Enhancement for 3D Video Coding

A video coding and depth technology, applied in the field of 3D video processing, can solve problems such as shape distortion and reduce the quality of depth maps, and achieve the effect of improving quality, restoring and protecting edge features

Active Publication Date: 2018-09-07
XIAMEN TONGJING INTELLIGENT TECH CO LTD
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Problems solved by technology

The common disadvantage of these methods is that they do not fully consider that after the color video and depth video are encoded and decoded by 3D video, the edges of the color image and the edge of the depth image often no longer correspond to each other, resulting in the smoothing of the edge of the object after interpolation and reconstruction of the depth image. , the shape of the object is distorted, which reduces the quality of the upsampled depth map

Method used

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  • A Resampling Method Based on Depth Enhancement for 3D Video Coding

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] The resampling method based on depth enhancement for 3D video coding adopts the 3D video coding HTM model, and the test conditions refer to the general test conditions of JCT-3V (JCT3V-E1100). MV-HEVC) configuration file baseCfg_2view.cfg, downsampling and upsampling scaling factor s=2.

[0025] The specific implementation steps refer to accompanying drawings (1)-(4).

[0026] The specific encoding method of 3D video is as follows: figure 1 Shown:

[0027] Step (1), encode the color video with the original resolution, and input it into the 3D-HEVC encoder according to the reference order of the encoding configuration file.

[0028] In step (2), the depth video is down-sampled using a filtering method based on frequency selection, and then sent to a 3D-HEVC encoder. The steps are:

[0029] a. Calculate the average value of the pixel depth in ...

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Abstract

The invention relates to a depth-enhancement-based resampling method facing 3D video coding. The method comprises: a color video is coded according to an original resolution ratio and resolution-rate reduction coding is carried out on a depth ratio; downsampling is carried out on the depth video by using a frequency-selection-based method before depth video coding, and for the decoded depth ratio, a depth video with an original resolution rate is generated by using a pre interpolation method and then upsampling is carried out on the depth video by using a depth enhancement method based on depth graph trusted edge guiding; and a view-point synthesis is carried out on the color video obtained by decoding and the upsampling depth video to obtain a needed multi-viewpoint video. With the method, distortion of resampling depth video during the 3D video coding and decoding processes can be reduced; the depth video edge is protected; and the quality of the synthesized viewpoint is improved.

Description

technical field [0001] The invention belongs to the technical field of 3D video processing, and in particular relates to a depth enhancement-based resampling method oriented to 3D video coding. Background technique [0002] With the wide application of 3D video technology, people have brought a three-dimensional visual experience. However, high-quality 3D video display often requires a large number of multi-view videos, and its huge data volume is difficult to realize in practical applications. Therefore, multi-view plus depth video is currently the main 3D video format. It consists of some color videos and their corresponding depth videos. View synthesis technology can be used to obtain other virtual multi-view videos, which increases the number of viewpoints and effectively reduces the The data volume of the 3D video. With the official release of 3D-HEVC, an HEVC-based multi-view plus depth video coding standard, it brings efficient compression coding of 3D video. Howev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/597H04N19/80H04N19/59H04N19/132H04N19/18H04N19/30
CPCH04N19/132H04N19/18H04N19/30H04N19/59H04N19/597H04N19/80
Inventor 陆宇杨萌李光球刘华平
Owner XIAMEN TONGJING INTELLIGENT TECH CO LTD
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