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Security Enhancement of Medical Imaging via Imperceptible and Robust Watermarking
Manuel CEDILLO HERNANDEZ Antonio CEDILLO HERNANDEZ Francisco GARCIA UGALDE Mariko NAKANO MIYATAKE Hector PEREZ MEANA
IEICE TRANSACTIONS on Information and Systems
Publication Date: 2015/09/01
Online ISSN: 1745-1361
Type of Manuscript: LETTER
Category: Information Network
digital watermarking, medical imaging, authentication,
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In this letter we present an imperceptible and robust watermarking algorithm that uses a cryptographic hash function in the authentication application of digital medical imaging. In the proposed scheme we combine discrete Fourier transform (DFT) and local image masking to detect the watermark after a geometrical distortion and improve its imperceptibility. The image quality is measured by metrics currently used in digital image processing, such as VSNR, SSIM and PSNR.