The Design Of Identity Authentication Digital Watermarking System Based On FPGA

Along with the rapid development of digital image processing and information hiding technology, the security of digital product pay more and more attention. In the field of the security protection, digital watermarking technology has been widely used.The main research of this paper is digital watermarking system and it has identity authentication function. It study and analysis of the common digital watermarking algorithm.This paper studies the watermark embedding algorithm based on DWT domain emphatically. It makes the comparison and study of the traditional wavelet and lifting wavelet transform wavelet. The algorithm of lifting wavelet transform possesses simple format and easy to hardware and implementation. It could completely reversible conversion process. This algorithm is the core of watermark imbedding. Research and summarizes the independent component analysis algorithm (ICA), select the optimization algorithm of FastICA to realize blind watermarking extraction.For the key algorithms of digital watermarking system proceed the FPGA hardware design. We adopt hardware description language Verilog HDL to design system, and utilize development platform QuartusⅡto implement such as simulation and synthesis. Finally,for watermark attack algorithm and performance analysis of the digital watermarking system.