SECURITY OF THE MEDICAL MEDIA USING A HYBRID AND MULTIPLE WATERMARK TECHNIQUE

摘要

This paper proposes a new approach of multiple and hybrid watermarks using two linked fields of insertion. This approach associates two different series of marks: one is sturdy guaranteeing the supervision of diffused media through the network and testifying to the identity of the owner of the medical image; the other series of marks, which is frail, insuring the integrity, the trace, and the archives of the medical diagnoses. In fact, this approach allows us to be benefited from the advantages of different insertion spaces (spatial and frequency field) and kind of two different fields of watermark. In the spatial field, the diagnosis of the doctor (frail marks) is inserted guaranteeing its records and its trace. In the frequency, the sturdy mark is inserted allowing to ensure the automatic control of the media through the network and testifying to the proprietor of the medical image.