中央研究院 資訊科學研究所

Billions of dollars are lost each year to piracy of movies, software, and other valuable content. One approach to protect content from unauthorized distribution is to embed a digital signature (fingerprint) into each authorized copy of the original content. The idea is that, if a different fingerprint is used for each copy, any unauthorized distribution of that copy can be traced to the its owner. However this approach is potentially vulnerable to collusions, where several users process their copies in an attempt to make their fingerprints undetectable.

This talk will address several aspects of this problem. First, an information-theoretic approach is outlined which quantifies the fundamental tradeoff between number of colluders and perceptual degradations due to fingerprint embedding and collusion attacks. Second, practical codes are developed based on that theory. Finally, these codes are applied to protect images, in a way that is resilient to conventional collusion attacks as well as to geometric attacks.
Bio:
Pierre Moulin received his doctoral degree from Washington University in St. Louis in 1990, after which he joined at Bell Communications Research in Morristown, New Jersey, as a Research Scientist. In 1996, he joined the University of Illinois at Urbana-Champaign, where he is currently Professor in the Department of Electrical and Computer Engineering, Research Professor at the Beckman Institute and the Coordinated Science Laboratory, affiliate professor in the Department of Statistics, and Sony Faculty Scholar.
His fields of professional interest include image and video processing, compression, statistical signal processing and modeling, media security, decision theory, and information theory.
Dr. Moulin has served on the editorial boards of the IEEE Transactions on Information Theory, the IEEE Transactions on Image Processing. He currently serves on the editorial boards of the Proceedings of IEEE and of Foundations and Trends in Signal Processing. He was co-founding Editor-in-Chief of the IEEE Transactions on Information Forensics and Security (2005-2008), member of the IEEE Signal Processing Society Board of Governors (2005-2007), and has served IEEE in various other capacities.
He received a 1997 Career award from the National Science Foundation and an IEEE Signal Processing Society 1997 Senior Best Paper award. He is also co-author (with Juan Liu) of a paper that received an IEEE Signal Processing Society 2002 Young Author Best Paper award. He was 2003 Beckman Associate of UIUC's Center for Advanced Study and plenary speaker for ICASSP 2006 and several other conferences. He is an IEEE Fellow.