Crypto-Watermarking of Transmitted Medical Images

详细信息    查看全文

• 作者：Ali Al-Haj ; Ahmad Mohammad ; Alaa’ Amer
• 关键词：Digital watermarking ; Telemedicine security ; Confidentiality ; Authenticity ; Integrity ; Tamper localization ; DICOM standard ; DWT ; SVD
• 刊名：Journal of Digital Imaging
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：30
• 期：1
• 页码：26-38
• 全文大小：
• 刊物类别：Medicine
• 刊物主题：Imaging / Radiology;
• 出版者：Springer International Publishing
• ISSN：1618-727X
• 卷排序：30

文摘

Telemedicine is a booming healthcare practice that has facilitated the exchange of medical data and expertise between healthcare entities. However, the widespread use of telemedicine applications requires a secured scheme to guarantee confidentiality and verify authenticity and integrity of exchanged medical data. In this paper, we describe a region-based, crypto-watermarking algorithm capable of providing confidentiality, authenticity, and integrity for medical images of different modalities. The proposed algorithm provides authenticity by embedding robust watermarks in images’ region of non-interest using SVD in the DWT domain. Integrity is provided in two levels: strict integrity implemented by a cryptographic hash watermark, and content-based integrity implemented by a symmetric encryption-based tamper localization scheme. Confidentiality is achieved as a byproduct of hiding patient’s data in the image. Performance of the algorithm was evaluated with respect to imperceptibility, robustness, capacity, and tamper localization, using different medical images. The results showed the effectiveness of the algorithm in providing security for telemedicine applications.