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In this paper, we propose an efficient digital watermarking scheme tostrengthen the security level already present in the database management systemand to avoid illegal access to comprehensive content of database includingpatient's information. Doctors diagnose medical images by seeing Region ofInterest (ROI). A ROI of a medical image is an area including importantinformation and must be stored without any distortion. If a medical image isillegally obtained or if its content is changed, it may lead to wrongdiagnosis. We substitute the part out of ROI of LSB bitplane of the image withthe patient data and a binary feature map. This latter is obtained byextracting edges of the resized image to the quarter of its size usingLaplacian operator. This image is directly integrated into the database. Theedge map and invariant moments are used to check the integrity of the image.

Enhancing Data Security in Medical Information System Using the Watermarking Techniques and Oracle SecureFile LOBs