Multimedia Security and Forensics

Abstract

Media Security: Great improvement in network technologies has made the Internet a convenient mode of multimedia content distribution. However, it has also increased the fear of illegal copying and redistribution. The digital rights management (DRM) technologies try to address the illegal copying and distribution concerns through cryptographic algorithms and protocols, watermarking techniques and digital licenses. This talk would briefly present a secure media distribution architecture and then discuss the research challenges in designing the necessary DRM technologies needed to address various concerns of owner, distributors and consumers. Followed by some algorithms we designed to address the concerns would be presented.

Media Forensics: Digital media is often used as evidence in the court of law. Being digital, they can easily be edited using today’s digital media editing tools and thus forge evidence. Therefore, these digital media cannot always be considered authentic. Thus, one of the important research problems in multimedia research is to detect such media forgeries. This presentation on media forensics would focus on a novel video forgery detection technique to detect the spatial and temporal copy paste forgery. It is a challenge to detect the spatial and temporal copy-paste tampering in videos as the forged patch may drastically vary in terms of size, compression rate and compression type (I, B or P) or other changes such as scaling and filtering.

Dr. Sabu Emmanuel received his BE from the National Institute of Technology (NIT), Durgapur, ME from the Indian Institute of Science (IISc.), Bangalore, and PhD from the National University of Singapore (NUS), Singapore. He began his career as a research and development engineer and then moved on to the academic profession. He has taught engineering students of National University of Singapore and Nanyang Technological University, Singapore. His main research interests are in multimedia processing and security. Dr. Emmanuel is on the editorial board of the Elsevier, Journal of Information Security and Applications. He had served as a Guest Editor for the IEEE Multimedia – Special issue on Multimedia in Forensics, Security and Intelligence, ACM/Springer Multimedia Systems Journal – Special issue on Privacy-aware Multimedia Surveillance Systems.