Research

Multimedia Forensics and Intrinsic Fingerprints

• Non Intrusive Component Forensics

• Forensic Analysis via Intrinsic Fingerprints

• Semi Non-Intrusive Component Forensics

• Unified Theoretical Model for Component Forensics

Applications to Image Source identification, Camera forensics, Scanner forensics, and cell phone camera forensics.

Web Based Technologies

• Confidentiality Preserving Web Search
  

• Essential Pages

• Protocol for Pay-per-action ads

• Reputation Modeling for Online Markets
  

Robust and Secure Image Hashing

Proposed a new technique for image hashing with improved robustness and security properties for applications in image authentication, database search, and watermarking.

Traitor Tracing and Extrinsic Fingerprints

• Exploring QIM-based Anti-Collusion Fingerprinting for Multimedia

• Fingerprinting Compressed Multimedia Signals

• Capacity Analysis of Multimedia Fingerprinting under Linear Collusion Attacks

Data Hiding in Computer Binaries

Proposed a new information hiding for compiled program binaries to bring system-wide performance improvements with a goal of enhancing computer system performance by providing additional information to the processor, without changing the instruction set architecture.