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An invertible watermarking scheme for authentication of Electronic Clinical Brain Atlas

The difficulty in watermarking medical imagery for authentication lies in the fact that watermarking itself should not introduce even one bit of alteration to the images. To this point, the recent invertible watermarking technique can help. However, the existing invertible watermarking schemes are not adaptable to the Electronic Clinical Brain Atlas (Nowinski et al. (1998)), a kind of "unnatural" palette images with respect to their uncorrelated contents. We develop an invertible watermarking scheme exclusively for authentication of the Electronic Clinical Brain Atlas. What makes our scheme special consists of the candidate points chosen for embedding and the encoding scheme to encode a bitstream. Furthermore, we present a general framework for invertible authentication watermarking, which encompasses virtually all existing schemes and more importantly, provides higher security over them. As an example, the proposed invertible scheme follows faithfully the framework. Our scheme really solves what others cannot.