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MPEG-video-compression-domain-based integrity watermark embedding and detection method

A video compression and detection method technology, applied in the field of information security, can solve the problems of small information capacity, low accuracy and reliability, and achieve the effect of improving reliability and information capacity

Active Publication Date: 2017-05-10
广东宜教通教育有限公司
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Problems solved by technology

However, the information capacity of the traditional integrity watermark information is small, which makes the accuracy and reliability of the tamper detection method low

Method used

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  • MPEG-video-compression-domain-based integrity watermark embedding and detection method

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Embodiment

[0078] like Figure 1 to Figure 3 As shown, the present invention is based on the integrity watermark embedding and detection method of MPEG video compression domain, comprises three steps:

[0079] The first step, first, generate group sequence watermark information, and convert the group sequence watermark information into a binary representation; then, generate intra-group frame sequence watermark information, and convert the intra-group frame sequence watermark information into a binary representation, and convert the binary The group sequence watermark information in representation form and the intragroup frame sequence watermark information in binary representation form are used as integrity watermark information;

[0080] The second step, at first, setting the quantity of picture frame embedding point and the position of each picture frame embedding point when integrity watermark information is embedded into MPEG video; Then, the group sequence watermark information in ...

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Abstract

The invention provides an MPEG-video-compression-domain-based integrity watermark embedding and detection method. The method comprises: step one, generating integrity watermark information; step two, embedding group sequence watermark information and intra-group frame sequence watermark information in the integrity watermark information into Cr chrominance blocks and Cb chrominance blocks of embedded points of I frames of all pictures of an MPEG video and embedding group sequence watermark information and intra-group frame sequence watermark information in the integrity watermark information into a first luminance block and a fourth luminance block of a macro block of embedded points of all pictures of the MPEG video respectively; and step three, carrying out integrity watermark information extraction on the MPEG video with the integrity watermark information and detecting the extracted integrity watermark information. With the method, the watermark detection method has high fault tolerance, so that the watermark robustness can be enhanced; and the information capacity of integrity watermark can be improved and reliability and accuracy of tampering detection can be enhanced.

Description

technical field [0001] The invention relates to the technical field of information security, and more specifically relates to an integrity watermark embedding and detection method based on MPEG video compression domain. Background technique [0002] With the emergence of powerful multimedia editing software, the modification of multimedia information such as audio and video has become simple and easy. Once falsified and falsified multimedia information is widely used in official media, scientific discoveries, insurance and court evidence, it will bring serious consequences. Tamper detection is mainly to solve the problem of integrity and originality identification of digital multimedia data. The tampering detection methods for digital images are relatively mature, but the tampering detection methods for digital videos are relatively few. [0003] For the existing MPEG video anti-counterfeiting and tampering detection methods, there are video Hash watermarking and tampering...

Claims

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Application Information

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IPC IPC(8): H04N19/467H04N19/895H04N21/8358
CPCH04N19/467H04N19/895H04N21/8358
Inventor 周燕曾凡智于昕梅谢雷
Owner 广东宜教通教育有限公司
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