Method for drawing virtual view color image

A virtual viewpoint and color image technology, applied in the field of three-dimensional video, can solve the problems of lack of influence on the rendering quality of the carrier image, affecting the subjective quality of the rendering image, inconsistent color of multi-viewpoint color images, etc.

Active Publication Date: 2011-01-05
常熟市知识产权运营中心有限公司
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Problems solved by technology

[0004] The current DIBR method focuses on optimizing the algorithm (such as: how to accurately fill the hole pixels, how to reduce the time of three-dimensional image transformation, etc.) to improve the accuracy and speed of drawing, but for the carrier image (color image and depth image) The effect of rendering quality is lack of relevant research
Through the feature analysis of color images and depth images, on the one hand, since depth is used to represent the load information of scene geometry, the quality of depth information will have an impact on the virtual viewpoint rendering in the later stage. Due to the coding distortion of

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  • Method for drawing virtual view color image
  • Method for drawing virtual view color image

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[0083] The present invention will be described in further detail below in conjunction with the embodiments of the drawings.

[0084] The method for rendering a virtual viewpoint color image proposed by the present invention specifically includes the following steps:

[0085] ① Obtain the K color images of the YUV color space of the K reference viewpoints at time t and the corresponding K depth images, and then calculate the K color images of the K reference viewpoints at time t at the encoding end according to the set coding prediction structure. The color space of the YUV color image and its corresponding K depth images are encoded, and then the encoded K color images and the corresponding K depth images are transmitted to the decoding end via the network.

[0086] At the decoding end, the encoded K color images and the corresponding K depth images are decoded, and the K color images of the K reference viewpoints and the corresponding K depth images at time t after decoding are obta...

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Abstract

The invention discloses a method for drawing a virtual view color image. In the method, a depth image is divided into a core content area and a non-core content area according to influence of depth coding distortion of different areas on drawing of the virtual view image, and two groups of bidirectional filters with different filtering intensities are designed to perform filter processing on a scene depth value corresponding to each pixel point of the core content area and the non-core content area respectively, so subjective quality of drawing the image is greatly improved; and then reference color information irrelative to void is extracted from the virtual view color image for color distortion problem during image fusion for depth image-based drawing, and different color correction methods are used for correcting colors of two groups of virtual view color images, so the subjective quality of drawing the image is improved.

Description

technical field [0001] The invention relates to a three-dimensional video technology, in particular to a color image rendering method of a virtual viewpoint. Background technique [0002] Three-dimensional video (Three-Dimensional Video, 3DV) is an advanced visual mode, which enables people to have a sense of three-dimensionality and immersion when viewing images on a screen, and can meet people's needs for viewing three-dimensional (3D) scenes from different angles. Typically, 3D video systems such as figure 1 As shown, it mainly includes modules such as video capture, video encoding, transmission decoding, virtual viewpoint rendering and interactive display. [0003] Multi-view video plus depth (MVD) is currently recommended by ISO / MPEG to represent 3D scene information. MVD data adds the depth information of corresponding viewpoints on the basis of multi-viewpoint color images. There are currently two basic ways to obtain depth information: 1) through depth cameras; 2) ...

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Application Information

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IPC IPC(8): G06T17/00G06T15/00
Inventor 邵枫蒋刚毅郁梅
Owner 常熟市知识产权运营中心有限公司
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