The robust medical volume data watermarking based on DCT compressed domain

This paper proposed a compressed domain algorithm of robust blind watermarking method for medical volume data, which addresses the problems of authentication and protection of personal information. The scheme obtains the visual feature vectors of medical volume data in DCT compressed domain. Through the concept of zero-watermarking, the algorithm for watermarking of volume data that is robust to geometric attacks. The experimental results demonstrate that the proposed algorithm has good invisibility and robustness.