Anti-collusion multimedia fingerprint method based on quantization index modulation

A quantized index modulation, multimedia technology, applied in image data processing, instruments, digital data authentication, etc., to achieve the effect of good anti-collusion attack performance

Inactive Publication Date: 2012-05-23
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] To sum up, the existing anti-collusion multimedia fingerprint schemes still cannot have good anti-collusion attack performance under both non-blind detection and blind detection strategies.

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  • Anti-collusion multimedia fingerprint method based on quantization index modulation

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Embodiment Construction

[0028] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0029] This embodiment is realized through the following environment: Suppose the original carrier information to be released is x=(x 1 ,s 2 ,...,x 8191 ) T , each element of which is independent of each other and obeys the normal distribution N(0, 10 2 ), the media information will be published to 200 users. Use the following method to generate 200 user ID codes (j=1, 2, . . . , 200):

[0030] With primitive polynomial f(x)=1+x+x 3 +x 4 +x 13 Generate m sequence a=(a with length equal to 8191 1 , a 2 ,...,a 8191 ) T . Then perform 200 different cyclic shifts on a to get 200 different sequences (j=...

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Abstract

An anti-collusion multimedia fingerprint method based on quantization index modulation in the field of digital information processing technology comprising the following steps: generating a fingerprint-containing copy by allocating a user IDs at a transmitting end, and performing collusion detection after obtaining a copy to be detected at a receiving end; and judging a conspirator through non-blind detection when the receiving end has original carrier information, otherwise judging the conspirator through blind detection. The anti-collusion multimedia fingerprint method uses two detection means of the non-blind detection and the blind detection, so that the conspirator can be correctly detected with very high probability, and capability of resisting collusion attack is very great.

Description

technical field [0001] The invention relates to a method in the technical field of digital information processing, in particular to an anti-collusion multimedia fingerprint method based on quantization index modulation. Background technique [0002] Digital fingerprint is a copyright protection technology for digital products. Its core idea is: before releasing each copy, the product provider embeds user-related information in the original carrier information. This information is unique, cannot be perceived by users, and can effectively distinguish different users; If illegally distributed pirated copies are found, users who distribute illegal copies can be traced by extracting fingerprint information in the copies. However, some buyers who have the same multimedia information and different fingerprints may jointly attack the fingerprints and generate a copy with attenuated or even removed fingerprint information, thereby evading the tracking of the copyright owner. Theref...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T1/00G06F21/00G06F21/32
Inventor 张爱新李建华郑旭平李生红
Owner SHANGHAI JIAOTONG UNIV
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