title: A QR code based zero-watermarking scheme for authentication of medical images in teleradiology cloud.
abstract: Healthcare institutions adapt cloud based archiving of medical images and patient records to share them efficiently. Controlled access to these records and authentication of images must be enforced to mitigate fraudulent activities and medical errors. This paper presents a zero-watermarking scheme implemented in the composite Contourlet Transform (CT)-Singular Value Decomposition (SVD) domain for unambiguous authentication of medical images. Further, a framework is proposed for accessing patient records based on the watermarking scheme. The patient identification details and a link to patient data encoded into a Quick Response (QR) code serves as the watermark. In the proposed scheme, the medical image is not subjected to degradations due to watermarking. Patient authentication and authorized access to patient data are realized on combining a Secret Share with the Master Share constructed from invariant features of the medical image. The Hu's invariant image moments are exploited in creating the Master Share. The proposed system is evaluated with Checkmark software and is found to be robust to both geometric and non geometric attacks.
authors: Department of Computer Science and Engineering, National Engineering College, Kovilpatti 628503, India.
authors: V
authors: V
authors: Seenivasagam
authors: R
authors: R
authors: Velumani
mesh_terms: D000465:Algorithms; D019295:Computational Biology; D016494:Computer Security / Q000592:standards / Q000706:statistics & numerical data; D003952:Diagnostic Imaging / Q000592:standards* / Q000706:statistics & numerical data; D057286:Electronic Health Records / Q000592:standards / Q000706:statistics & numerical data; D006801:Humans; D010355:Patient Identification Systems / Q000592:standards / Q000706:statistics & numerical data; D012984:Software; D019112:Teleradiology / Q000592:standards* / Q000706:statistics & numerical data
references: IEEE Trans Image Process. 2004 Feb;13(2):145-53
references: 15376936
references: J Digit Imaging. 2011 Feb;24(1):114-25
references: 19937363
references: Eur J Radiol. 2010 Jan;73(1):3-9
references: 19914789
references: IEEE Trans Image Process. 2005 Dec;14(12):2091-106
references: 16370462
references: Online J Public Health Inform. 2012;4(1):
references: 23569629
references: J Digit Imaging. 2013 Apr;26(2):326-43
references: 22975883