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Meeting and Seminar Archive:

Date:  Mar 10, 2008

Title: Digital Fingerprinting for Multimedia Forensics

Speaker: Prof. Min Wu, Department of Electrical and Computer Engineering, Institute of Advanced Computer Studies, University of Maryland, College Park


Abstract: Technology advancement has made multimedia content widely available and easy to process. These benefits also make it easy to make unauthorized duplication, manipulation, and redistribution of multimedia content, prompting the need of multimedia forensics research to facilitate evidence gathering in digital world. Embedded digital fingerprinting is one of the emerging forensics technologies. A unique ID that serves as a digital fingerprint to represent a receiving user is inserted into the content, and the fingerprinted content is then delivered to the user. When some copies are leaked or misused, the authority will be able to use these embedded fingerprints to trace back to the culprits. For multimedia data, digital fingerprints can be put into the content using conventional robust embedding techniques, which are typically concerned with surviving attacks mounted by an individual. Advances in communications and networking have made it easy for adversaries to work together to generate a new version based on their individual copies. These so-called collusion attacks provide adversaries with a cost-effective way to remove the fingerprints and circumvent the traitor-tracing mechanism.

In this talk, I will present our recent research on anti-collusion fingerprinting for multimedia data. Through jointly considering the encoding, embedding, and detection of fingerprints, our techniques can help collect digital-domain evidence and pinpoint to the sources of leak among millions of users. Applications of such multimedia forensic tools range from military and government operations to piracy deterrence in Hollywood and other entertainment industry.

If time permits, I will also give a brief introduction on non-intrusive forensic analysis that explores intrinsic traces to complement the embedded fingerprints in determining the origin and processing history of digital multimedia data.



Prof. Min Wu received the B.E. degree in electrical engineering and the B.A. degree in economics in 1996 from Tsinghua University in Beijing, China (both with the highest honors), and the Ph.D. degree in electrical engineering from Princeton University in 2001. Since 2001, she has been on the faculty of the Department of Electrical and Computer Engineering and the Institute of Advanced Computing Studies at University of Maryland, College Park, where she is currently an Associate Professor. Dr. Wu leads the Media and Security Team (MAST) at University of Maryland, with main research interests on information security and forensics and multimedia signal processing. She has authored or co-authored two books and about 100 publications in international journals and conferences, and holds five U.S. patents on multimedia security and communications. She is a co-recipient of two Best Paper Awards from the IEEE Signal Processing Society and EURASIP, respectively. She also received a U.S. National Science Foundation CAREER award in 2002, a TR100 Young Innovator Award from the MIT Technology Review Magazine in 2004, a U.S. ONR Young Investigator Award in 2005, and a Computer World "40 Under 40" IT Innovator Award in 2007. She is current serving as Area Editor of the IEEE Signal Processing Magazine for its "Inside Signal Processing E-Newsletter" and on three IEEE Technical Committees on image and multimedia processing and systems.

Further information on Prof. Min Wu can be found on her website: http://www.ece.umd.edu/~minwu/.

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