Research and Implementation on Digital Image Copyright Protection System

Two typical digital watermark algorithms were introduced in this paper, and did the simulation using MATLAB. In view of their advantages and disadvantages through analysis of the results, propose the digital watermarking algorithm based on discrete cosine transform and discrete wavelet transform. Analyze the application of the multiple digital watermarking in digital copyright protection and the pirate tracing problem. Use the Visual C++ to achieve the digital image copyright protection system both including the watermark embedding and extracting.