Method and system for writing secret information into video, video authentication method and system
A technology for secret information and video, applied in the field of video authentication methods and systems, to achieve the effects of less destructiveness, low distortion, and hidden location concealment
Inactive Publication Date: 2018-08-24
SHENZHEN UNIV
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The active identification and authentication method requires certain calculations and operations on the video, marking or summarizing the video, and judging the authenticity and integrity of the video through these markings or summaries. This method requires as little as possible to mark and summaries the video Destroy the original video while maintaining the quality of the original video, while making tags or summaries fragile
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[0053] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0054] The present invention mainly regards each frame image of the video as a plane, constructs a curve function on the plane, and selects pixel points sequentially from each frame image of the video according to the curve function, thereby obtaining the orderly pixel points Arrangement of R value, G value, and B value. If necessary, adjust the R value, G value or B value of some pixels in each arrangement, so that the parity of the reverse number of each arrangement corresponds to the secret to be written. Bit information, so as to embed secret information, and then realize the content authentication of the video. The video in this paper refers to digital video, and the embedded secret information typically has digital watermark information, such...
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The invention relates to a method and a system for writing secret information into a video, a video authentication method and system. Video frame images are taken as a plane where a curvilinear function is constructed. Pixel points are selected in order from each frame image of the video according to the curvilinear function, and R value, G value, and B value arrangements of the ordered pixel points are obtained. The R value, G value, or B value of some pixel point in each arrangement are separately adjusted if necessary, so that inverse number parity of each arrangement is separately corresponding to the secret information to be written, and the secret information is embedded. In the invention, only small part of pixels in each frame image of the video are extracted, the arranged inverse number parity of the three color channel values of the part of the pixels can represent three bit values, and the damage to the video images is small. At the same time, each bit of the secret information is represented by the arranged inverse number of some color channel value of the pixel extracted from some frame image, so that the secret information is hidden better and has better frangibility.
Description
technical field [0001] The invention relates to the technical field of multimedia content security, in particular to a method and system for writing secret information into a video, and a video authentication method and system. Background technique [0002] With the rapid development of technologies such as multimedia and network, videos, especially digital video streams in compressed formats, have been widely used in more and more fields. The content carried by video has gone far beyond the scope of film and television entertainment content. In applications such as video surveillance and on-site recording, video has become an important clue to understand the actual situation and restore the real scene. It can even be used as a court with legal effect. evidence. Therefore, the authenticity and integrity identification of video content and the objective scenes it reflects has become increasingly important. Its impact is no longer limited to the technical field of multimedia ...
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IPC IPC(8): H04N21/2347H04N21/235H04N21/4405H04N19/182
CPCH04N19/182H04N21/23473H04N21/2351H04N21/44055
Inventor 张勇虞坤桥赵东宁李岩山陈剑勇
Owner SHENZHEN UNIV