A digital watermarking algorithm based on Chinese remainder theorem

Digital watermarking is a technique of embedding special information into media data. It is often used in the copyright protection and integrity verification of digital images, audio, video, and other media data. Based on the Chinese remainder theorem, we propose an image watermarking algorithm that embedding secret information into an image. We have implemented the algorithm in Matlab. Our experiment results show that the algorithm has high robustness against common modifications or attacks, such as JPEG compression, adding noise, median filtering, and cutting.