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Embedding method and detection method for video digital hidden information

A technology that hides information and numbers. It is used in the modification of digital video signals, components of color TVs, components of TV systems, etc., to achieve the effect of improving efficiency, high invisibility and robustness.

Active Publication Date: 2018-04-06
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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Problems solved by technology

[0002] Video content greatly facilitates people's lives, but the development of technology makes it easier to copy, tamper with, and infringe on video content, which brings great economic losses to video copyright manufacturers, so video copyright protection has attracted more and more attention

Method used

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  • Embedding method and detection method for video digital hidden information
  • Embedding method and detection method for video digital hidden information
  • Embedding method and detection method for video digital hidden information

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] A specific embodiment of the present invention provides a video digital hidden information embedding method for the copyright owner to embed some specific information into its multimedia content, especially video, to realize effective copyright management. refer to figure 1 , the embedding method roughly includes steps S1 to S6:

[0025] Step S1. Select an original video frame image to be embedded with digital hidden information from the original video; and convert the digital hidden information to be embedded into a hidden information binary image. In a preferred embodiment, according to the scene change in the original video, the last frame image before the scene change is selected as the key frame image, and then the previous frame image of the key frame image is copied to replace the key frame image. The frame image is used as the ...

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Abstract

The invention discloses an embedding method and a detection method for video digital hidden information. The embedding method comprises the steps of: selecting an original video frame image to be embedded with digital hidden information from an original video; converting the digital hidden information to be embedded into a hidden information binary image; performing block DCT (Discrete Cosine Transform) on the original video frame image; modifying an intermediate frequency coefficient of each image sub-block after DCT according to the pixels corresponding to each image sub-block in the hiddeninformation binary image to embed the digital hidden information; performing block inverse discrete cosine transform on the modified DCT coefficients to obtain a video frame image embedded with the digital hidden information; and replacing the original video frame image in the original video with the video frame image embedded with the digital hidden information. The detection method comprises thesteps of: selecting the video frame image embedded with the digital hidden information and a previous frame of image from the video and subtracting the both directly to obtain a difference image; andsuccessively performing down-sampling and binarization on the difference image to obtain a hidden information binary image.

Description

technical field [0001] The invention relates to the field of digital media content copyright management, in particular to a method for realizing robust video digital information hiding and a corresponding hidden information detection method. Background technique [0002] Video content greatly facilitates people's lives, but the development of technology makes it easier to copy, tamper with, and infringe on video content, which brings great economic losses to video copyright manufacturers, so video copyright protection has attracted more and more attention . [0003] Digital information hiding is to embed hidden information (digital sequences or images with copyright information) into multimedia content through some information hiding algorithms in digital multimedia content, such as pictures, audio, video, etc. Hidden information has good invisibility and cannot be perceived by human senses, but it can be detected by specific software. In this way, even if the digital poly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/467H04N5/913
CPCH04N5/913H04N19/467H04N2005/91335
Inventor 王兴军徐子尧李鑫
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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