ISU Electrical and Computer Engineering Archives

The use of wavelet watermarking and statistical classification techniques for collusion detection and identification in multimedia forensics

Persaud, Anthony G. (2006) The use of wavelet watermarking and statistical classification techniques for collusion detection and identification in multimedia forensics. Masters thesis, Iowa State University.

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This research proposes a wavelet-based multimedia fingerprint scheme and statistical clustering algorithm for collusion detection and identification. The use of digital multimedia has steadily increased using mediums like the Internet. Encryption is generally used to safeguard content while in transmission, but offers no protection against duplication. Tracing unauthorized content distributors has become an increasing concern for the media industry. Unauthorized duplication, piracy, and illegal redistribution of multimedia content account for several billion dollars in losses every year. It is important to design reliable investigative techniques against unauthorized duplication and propagation, and provide protection in the form of theft deterrence. Some fingerprint embedding schemes are robust against single-user modification attacks. However, a new breed of attacks, known as collusion attacks, have been used to defeat those underlying schemes. These attacks use the combination of multiple fingerprinted copies to create a new version where the underlying fingerprint is highly attenuated, becoming untraceable to the colluders. This research adopts the use of wavelet transforms and statistical classification techniques to effectively identify the set of colluders involved in a collusion attack while maintaining low miss rates and false accusation rates. The experimental results show that the solution is effective in identifying large colluder sets without the knowledge of the number of colluders involved in an attack and the collusion attack used.

EPrint Type:Thesis (Masters)
Additional Information:Published in: Anthony Persaud and Yong Guan, "Collusion Detection and Identification for Multimedia Forensics" Second Annual IFIP WG 11.9 International Conference on Digital Forensics, National Center for Forensic Science, Orlando, Florida, January 2006
Uncontrolled Keywords:multimedia fingerprint collusion detection wavelet watermarking
Subjects:Computer Engineering > INFORMATION SYSTEMS SECURITY & NETWORKING > Information Assurance
Electrical Engineering > COMMUNICATION & SIGNAL PROCESSING > Signal/Image Processing
Computer Engineering > INFORMATION SYSTEMS SECURITY & NETWORKING > Computer Networking and Security
ID Code:236
Identification Number:Identification Number UNSPECIFIED
Deposited By:Anthony G. Persaud
Deposited On:18 April 2006

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