Digital watermarking technique for digital medical images

With the development of information technique, the power of image processing software become stronger, and we can edit the digital images more easily. So the copyright protection, the integrity authentication of digital image becomes an urgent issue. At the same time, the rapid development of medical technique, there are more and more digital images, and they need be preserved, transmitted, an so on. However, the copyright of it should be researched. And the contents of digital medical images contain more important information, and any change of it may result in physiotherapy accident. How to authenticate the digital images´ reality and integrity become so important that we should use new technique to protect them. Digital watermarking is a technique that embeds important data into host multimedia, and it can be used in digital right management, authentication and data hiding. In this paper, we will analyze the character of medical images and watermarking technique. And give the basic procedure of them, and analyze the performance of these algorithms.