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Method for rendering virtual viewpoint image of three-dimensional television system

A virtual viewpoint and stereoscopic TV technology, applied in the field of virtual viewpoint image rendering, can solve the problem of quantization error affecting the quality of virtual viewpoint image rendering

Inactive Publication Date: 2008-12-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The occlusion between objects and the quantization error of pixel coordinates seriously affect the quality of virtual viewpoint image rendering

Method used

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  • Method for rendering virtual viewpoint image of three-dimensional television system
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  • Method for rendering virtual viewpoint image of three-dimensional television system

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Embodiment Construction

[0090] figure 1 A schematic diagram of the structure of the present invention is given. The invention provides a method for drawing virtual viewpoint images in a stereoscopic television system. It includes the following steps:

[0091] Step 1, according to the depth image of the left viewpoint, rotate the texture image of the left viewpoint to the virtual viewpoint, and obtain the rotated image of the texture image of the left viewpoint. Steps:

[0092] a) Set the luminance component, blue chrominance component and red chrominance component of each pixel in the rotated image of the left-viewpoint texture image to 0;

[0093] b) Calculate the rotation matrix from the left viewpoint to the virtual viewpoint according to the following formula:

[0094] L_to_V_PP=V_A×V_E×(L_E -1 )×(L_A -1 );

[0095] Among them, L_A and L_E are the internal and external parameters of the left viewpoint camera, respectively, V_A and V_E are the internal and external parameters of the user-spe...

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Abstract

The invention discloses a method for describing the virtual viewport image in a stereo-television system. The method comprises the following steps: 1) a left viewport texture image and a right viewport texture image are rotated to a virtual viewport to obtain the rotated image of the left viewport texture image and the right viewport texture image according to a left viewport range image and a right viewport range image; 2) the self-adapting interpolation is carried out to the left viewport texture image and the right viewport texture image to obtain the interpolation image of the left viewport texture image and the right viewport texture image; and 3) according to the interpolation image of the left viewport texture image, the superposition-type filling is carried out to the interpolation image of the right viewport texture image to obtain a virtual viewport image. By adopting the method, firstly, the left viewport texture image and the right viewport texture image are rotated to obtain the rotated image, then, the self-adapting interpolation is carried out to the rotated image to obtain the interpolation image, and finally, the superposition-type filling is carried out to the interpolation image to obtain the virtual viewport image. The method can effectively inhibit the noise caused by shading and quantization errors and improve the quality of the virtual viewport image description.

Description

technical field [0001] The present invention relates to digital image processing technology, in particular, to a method for drawing virtual viewpoint images in a stereoscopic television system Background technique [0002] With the rapid development and wide application of digital video technology, people have higher and higher requirements for video quality and form. Traditional two-dimensional flat video can no longer meet people's needs for real and natural reproduction of scenes, so it can provide stereoscopic Stereoscopic / multi-viewpoint video technology with interactive operation functions has attracted more and more attention from the industry. Compared with monocular video, stereoscopic / multi-viewpoint video has increased scene depth information representation, and has broad application prospects in fields such as stereoscopic TV, virtual viewpoint TV, visual conferencing with a sense of presence, and virtual reality (see Hou Chunping, Yang Lei, Song Xiaowei, Dai Ju...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N13/00G06T7/00
Inventor 许士芳刘济林
Owner ZHEJIANG UNIV
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