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Method for protecting copyright of virtual viewpoint image

A technology of virtual viewpoint and copyright protection, applied in image communication, components of color TV, components of TV system, etc., can solve the problem of infringing the legitimate rights and interests of the original author

Inactive Publication Date: 2011-03-23
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In recent years, with the rapid development of network and information technology, digital multimedia information and works such as digital images, audio and video can be directly obtained and widely disseminated in digital form, and it is also very easy for pirates to copy or disseminate Digital multimedia information and works, resulting in the widespread copying and dissemination of copyright works without authorization, seriously infringing on the legitimate rights and interests of the original author

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  • Method for protecting copyright of virtual viewpoint image
  • Method for protecting copyright of virtual viewpoint image
  • Method for protecting copyright of virtual viewpoint image

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Embodiment Construction

[0149] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0150] A copyright protection method for a virtual viewpoint image, which mainly includes the following steps:

[0151] ① Obtain K color images whose color space is YUV and corresponding K depth images of K reference viewpoints at time t, and mark the watermark image to be embedded as {P(x 2 ,y 2 )}, where (x 2 ,y 2 ) represents the watermark image to be embedded {P(x 2 ,y 2 )} The coordinate position of the pixel point, 1≤x 2 ≤N, 1≤y 2 ≤N, N represents the watermark image to be embedded {P(x 2 ,y 2 )} horizontal and vertical size, P(x 2 ,y 2 ) represents the watermark image to be embedded {P(x 2 ,y 2 )} where the coordinate position is (x 2 ,y 2 ) pixel watermark information.

[0152] In this implementation, the 3D video test sequences "Ballet" and "Breakdancers" provided by Microsoft Corporation of the United States are used a...

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Abstract

The invention discloses a method for protecting copyright of a virtual viewpoint image, which comprises the steps of: extracting a minimum perceptible change step length threshold according to a human vision masking effect to embed different strengths of watermark information into a color image, embedding different strengths of watermark information in a range image according to the influence of the distortion of the range image in different regions to the drawing of a virtual viewpoint so as to greatly improve the embedding strength and the robustness of a watermark; and then obtaining a virtual viewpoint color image and a virtual viewpoint range image by adopting the drawing based on the range image, and designing different watermark extracting methods to extract a basic layer watermark image and a reinforced layer watermark image from the virtual viewpoint color image and the virtual viewpoint range image, and obtaining a final watermark image through fusion so that the watermark blind detection of the virtual viewpoint image is realized and the purpose of protecting the copyright is achieved.

Description

technical field [0001] The invention relates to a processing technology of three-dimensional video, in particular to a copyright protection method of a virtual viewpoint image. 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 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, viewpoint rendering and interactive display. Multi-view video plus depth (MVD) is currently recommended by ISO / MPEG to represent 3D (Three-Dimensional, three-dimensional) scene information. MVD data adds the depth information of the corresponding viewpoint to the color image. , Depth Image Based Rendering (DIBR) is a method for generating a virtual viewpo...

Claims

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Application Information

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IPC IPC(8): H04N5/913H04N13/00H04N15/00
Inventor 邵枫郁梅蒋刚毅陈恳
Owner NINGBO UNIV