Study on reversible visible watermarking scheme for digital images

Digital watermarking is a technique that embeds important data into host multimedia, such as video, image, audio, and so on, and it can be used to protect the copyright of digital cover information. One of its important techniques is reversible visible watermarking algorithm. It´s not only can authenticate the reality of digital information, but also can recover the original image, and it can be used in some important special images, such as medical image, military images, and so on. In this paper, we will summarize the existing typical reversible visible watermarking algorithms, give the basic procedure of them, and analyze the performance of these algorithms.