Hardware Implementation of a Digital Watermarking System Using 3d Dct

Abstract

Real-time video authentication is a major concern for surveillance video cameras. In this thesis, I present a secure, low power and low hardware video watermarking system that inserts an invisible semi-fragile watermark into the video stream for real-time surveillance video authentication during the commonly used MPEG-4 encoding process with insignificant video quality degradation. The watermark embedding is processed in the discrete cosine transform domain. To achieve high performance, the proposed system architecture employs pipeline structure and uses parallelism. I am planning to do an Hardware implementation using field programmable gate array. Hardware-based video authentication system using this watermarking technique features minimum video quality degradation and can withstand certain potential attacks, i.e., cover-up attacks, cropping, and segment removal on video sequences. Furthermore, the proposed hardware-based watermarking system features low power consumption, low cost implementation, high processing speed, and reliability.