Search Word(s) in Title, Keywords, Authors, and Abstract: Mohamed El Marraki

Robust ROI Watermarking Scheme Based on Visual Cryptography: Application on Mammograms
Meryem Benyoussef, Samira Mabtoul, Mohamed El Marraki and Driss Aboutajdine
Page: 495~508, Vol. 11, No.4, 2015
10.3745/JIPS.02.0032

Keywords: Copyright Protection, Mammograms, Medical Image, Robust Watermarking, Visual Cryptography
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In this paper, a novel robust medical images watermarking scheme is proposed. In traditional methods, the added watermark may alter the host medical image in an irreversible manner and may mask subtle details. Consequently, we propose a method for medical image copyright protection that may remedy this problem by embedding the watermark without modifying the original host image. The proposed method is based on the visual cryptography concept and the dominant blocks of wavelet coefficients. The logic in using the blocks dominants map is that local features, such as contours or edges, are unique to each image. The experimental results show that the proposed method can withstand several image processing attacks such as cropping, filtering, compression, etc.