Glass-less 3D video encryption method based on digital watermark encryption and system

A technology of digital watermarking and encryption method, applied in image communication, selective content distribution, electrical components, etc., can solve the problems of immaturity and lag in video digital watermarking research, and achieve fast and convenient encryption, good robustness and invisibility nature and achieve the effect of copyright protection

Inactive Publication Date: 2015-12-23
WUHAN UNIV
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  • Claims
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Problems solved by technology

[0004] The research on image watermarking by scholars and research institutions at home and abroad has tended to be perfect, but the research on video digital watermarking is still relatively lagging behind, and a unified evaluation standard has not been established, and it still needs to be mature.

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  • Glass-less 3D video encryption method based on digital watermark encryption and system
  • Glass-less 3D video encryption method based on digital watermark encryption and system
  • Glass-less 3D video encryption method based on digital watermark encryption and system

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Embodiment Construction

[0046] The technical solutions of the present invention will be further described below in conjunction with specific embodiments.

[0047] The processing object of the method of the present invention is a 2D frame image, that is, the method of the present invention is used to process the 2D frame image frame by frame, and the specific steps are as follows:

[0048] Step 1, select a random number sequence.

[0049] The random number sequence is the original digital watermark, which is used to embed the 2D frame image for encryption. The random number sequence is composed of a m random numbers, where m represents the number of viewpoint images in a frame of image, and the number of viewpoint images contained in a frame image in a naked-eye 3D video is generally 4, 8, or 9, etc.; a is a positive integer, A positive integer in the range of 6-8 is preferable.

[0050] In this specific implementation, the frame image to be processed consists of 9 viewpoint images, and 63 random nu...

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Abstract

The invention discloses a glass-less 3D video encryption method based on digital watermark encryption and a system. The method comprises steps that, step 1, randomized numbers are combined to form an original digital watermark in a random arrangement mode, and the original digital watermark is divided into m sub digital watermarks randomly; step 2, the m sub digital watermarks are respectively embedded in each viewpoint image of an two-dimensional frame image to acquire the watermark encryption two-dimensional frame image; step 3, step 1 and the step 2 are cycled till watermark encryption for all two-dimensional frame images is carried out, and the watermark encryption two-dimensional frame images are converted into glass-less 3D videos; and step 4, sub digital watermarks of viewpoint images included by glass-less 3D video frame images are extracted to acquire original digital watermarks. The method has properties of excellent robustness and invisibility, glass-less 3D videos can be rapidly and conveniently encrypted, copyright protection for the glass-less 3D videos can be further realized, and the video playing and displaying effects are not damaged.

Description

technical field [0001] The invention belongs to the technical field of naked-eye 3D video encryption, and in particular relates to a naked-eye 3D video encryption method and system based on digital watermark encryption. Background technique [0002] Glasses-free 3D video is a 3D video that can be viewed directly without wearing auxiliary equipment (such as red and blue, polarization, etc.), and it has a wide range of application backgrounds in various fields. [0003] Usually, in order to obtain a better stereoscopic effect, multiple parallax images are often used for synthesis, and the viewer only needs to see two of the images at different angles to generate parallax and see the stereoscopic effect. For this kind of synthesis, an extremely convenient and fast algorithm is needed to synthesize a large number of parallax images to form a naked-eye 3D video source. [0004] The research on image watermarking by domestic and foreign scholars and research institutions has tend...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N15/00H04N21/2347
Inventor 钱俊马桃林廖宇唐少飞刘雪瑞柯柳依何家兴孙皓雪乐浩叶景延铁关平杨烜文于洋
Owner WUHAN UNIV
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