Glasses-free 3D video encryption method and system based on digital watermark encryption
A technology of digital watermarking and watermark encryption, which is applied in three-dimensional systems, image communication, electrical components, etc., can solve the problems of waiting for maturity and lagging research of video digital watermarking, and achieve fast and convenient encryption, good robustness and invisibility, Achieve the effect of copyright protection
Inactive Publication Date: 2018-05-29
WUHAN UNIV
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[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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[0046] The technical solution of the present invention will be further described below in combination with specific embodiments.
[0047] The processing object of the inventive method is a 2D frame image, promptly adopts the inventive method to carry out frame-by-frame processing to the 2D frame image, and concrete 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 randomly arranged, m represents the number of viewpoint images in a frame image, and the number of viewpoint images contained in a frame image in a naked-eye 3D video is generally 4, 8 or 9; a is a positive integer, It is preferably a positive integer within the range of 6-8.
[0050] In this specific implementation, the frame image to be processed is composed of 9-viewpoint images, and 63 random numbers ar...
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The invention discloses a naked-eye 3D video encryption method and system based on digital watermark encryption, comprising steps: step 1, random numbers are randomly arranged and combined into an original digital watermark, and the original digital watermark is randomly divided into m sub-digital watermarks; step 2. The sub-digital watermarks are respectively embedded in each viewpoint image of the 2D frame image, thereby obtaining the watermark-encrypted 2D frame image; Step 3, the watermark encryption is performed on the cyclic steps 1~2 until the 2D frame image, and the watermark-encrypted 2D frame image is converted into Glasses-free 3D video; step 4, extracting the sub-digital watermark of the viewpoint image contained in the frame image of the glasses-free 3D video to obtain the original digital watermark. The invention has good robustness and invisibility, and can quickly and conveniently encrypt the naked-eye 3D video, so as to further realize the copyright protection of the naked-eye 3D video; and the display effect of the video will not be 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 directly watched 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 viewers only need 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 scholars and research institutions at home and abroad has been perf...
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IPC IPC(8): H04N13/351H04N13/359H04N21/2347
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