Real-time perceptual watermarking architectures for video broadcasting

Existing secureembeddedsystemsareprimarily cryptographybased.However, for effectiveDigital Rights Management (DRM)ofmultimedia in the frameworkof embedded systems, bothwatermarking and cryptography are necessary. In this paper, a watermarking algorithm and corresponding VLSI architectures are presented thatwill insert a broadcaster’s logo into video streams in real-time to facilitate copyrighted video broadcasting and Internet protocol television (IP-TV). The VLSI architecture is prototyped using a hardware description language (HDL) and when realized in silicon can be deployed in any multimedia producing consumer electronics equipment to enable real-time DRM right at the source. The watermark ideo broadcasting P-TV atermarking ontent protection opyright protection is inserted into the video stream before MPEG-4 compression, resulting in simplified hardware requirements and superior video quality. The watermarking processing is performed in the frequency (DCT) domain. The system is initially simulated and validated in MATLAB/Simulink® and subsequently prototyped on an Altera® Cyclone-II FPGA using VHDL. Itsmaximum throughput is 43 frames/s at a clock speed of 100MHz which makes it suitable for emerging real-time digital video broadcasting applications such ed vid Root eal-time security igital rights management ultimedia security as IP-TV. The watermark of 21.8dB and an average