A DWT-SVD based robust digital watermarking for medical image security. (March 2021)

• Record Type: Journal Article
• Authors: Zermi, Narima; Khaldi, Amine; Kafi, Redouane; Kahlessenane, Fares; Euschi, Salah
• Is Part Of: Forensic science international. Volume 320(2021)
• Publication Date: 2021-03
• Subjects: Digital watermarking -- Color image watermarking -- Medical image -- Electronic patient record -- Discrete wavelet transform -- Singular value decomposition; Medical jurisprudence -- Periodicals; Chemistry, Forensic -- Periodicals; Forensic Medicine -- Periodicals; Médecine légale -- Périodiques; Chimie légale -- Périodiques; Gerechtelijke geneeskunde; Gerechtelijke chemie; Gerechtelijke psychiatrie; Chemistry, Forensic; Medical jurisprudence; Electronic journals; Periodicals; Electronic journals; 614.1
• DOI: 10.1016/j.forsciint.2021.110691
• Languages: English
• ISSNs: 0379-0738

Abstract

Highlights: The proposed approach is a hybrid scheme based on a discrete wavelet transforms and singular value decomposition. The proposed approach being blind, the watermarked image is sufficient to identify the patient. The integrity of the extracted information can be verified by comparing the hash embedded in the image. Our approach allows insertion of a large amount of data while preserving a reasonable imperceptibility. In terms of robustness, the two variants are resistant to filtering and compression attacks while maintaining a good NCC. Abstract: In this work, we propose a blind watermarking approach for medical image protection. In this approach, the watermark will be constituted of the Electronic Patient Record and the image acquisition data. In order to enhance the security and guarantee the data integrity, the Electronic Patient Record hash will be added to the watermark. The integration process is based on a DWT-SVD combination, a DWT is applied to the retinal image, then, an SVD is applied to the LL sub-band. The watermark will be then integrated into the least significant bits of the S component obtained by combining the parity of the successive coefficients. Experimental results for imperceptibility and robustness show that the proposed scheme maintains a high quality watermarked image and remains highly robust against several conventional attacks.