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Texture/depth combination up-sampling method

A depth and texture technology, applied in the field of 3D video compression and reconstruction, can solve the problems of unutilized attributes, border blur, distortion, etc., to improve coding efficiency, protect borders, and improve synthesis quality.

Inactive Publication Date: 2014-07-02
BEIJING UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0010] Although many existing texture / depth joint upsampling methods can protect most of the borders to a certain extent, there are still blurred and distorted borders that affect the quality of the synthesized virtual view.
The reason is that they treat every pixel equally when upsampling the depth map without taking advantage of its unique properties

Method used

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Embodiment Construction

[0020] like figure 1 As shown, this joint texture / depth upsampling method includes the following steps:

[0021] (a) Identify the boundaries between the low-resolution depth map and the high-resolution texture map at the decoding end, and divide the entire low-resolution depth map into three parts: horizontal boundaries, vertical boundaries, and non-boundary regions;

[0022] (b) The structural similarity between the low-resolution depth map and the high-resolution depth map and the boundary similarity between the depth map and the corresponding texture map are exploited, and the depth values ​​along the boundary direction are locally uniform across the boundary. The depth values ​​of the directions undergo dramatic changes to reconstruct the high-resolution depth map.

[0023] The present invention makes full use of the structural similarity between the low-resolution depth map and the high-resolution depth map and the boundary similarity between the depth map and the corres...

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Abstract

The invention discloses a texture / depth combination up-sampling method. A boundary can be well protected, coding efficiency is improved, and the synthesis quality of a virtual view is improved. The method comprises the steps that (a) the boundary of a low-resolution depth image and a high-resolution texture image is identified at a decoding end, and the whole low-resolution depth image is divided into three parts, namely a horizontal boundary, a vertical boundary and a non-boundary zone; and (b) the structure similarity of the low-resolution depth image and a high-resolution depth image and the boundary similarity of the depth images and corresponding texture images are used, and according to the fact that depth values in the boundary direction are partially even and depth values in the boundary-crossing direction can change suddenly and severely, a high-resolution depth image is reestablished.

Description

technical field [0001] The invention belongs to the technical field of 3D video compression and reconstruction, and in particular relates to a texture / depth joint upsampling method. Background technique [0002] In recent years, with the rapid development of 3D multimedia / display technology and the continuous upgrading of video services, the simple plane visual information provided by traditional video can no longer meet people's visual requirements. Faced with the diverse world around us, people need to observe and analyze from a more comprehensive and three-dimensional perspective. [0003] At present, 3D video has won wide attention as one of the most mainstream video formats. It is a new type of video technology that can provide stereoscopic effect. 3D TV / Free Viewpoint TV (3DTV / FTV) has emerged as an important application and has become a very important research direction. Compared with traditional flat-screen TVs, 3DTV achieves three-dimensional display of three-dime...

Claims

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Application Information

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IPC IPC(8): H04N13/00G06T7/60G06T7/41
Inventor 尹宝才左宇鹏丁文鹏施云惠
Owner BEIJING UNIV OF TECH
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