Title: Authentication of DICOM medical images using independent component analysis (ICA)

Authors: A. Kannammal; S. Subha Rani

Addresses: ECE Department, PSG College of Technology, Peelamedu, Coimbatore-641004, Tamilnadu, India. ' ECE Department, PSG College of Technology, Peelamedu, Coimbatore-641004, Tamilnadu, India

Abstract: This paper proposes a blind content-based watermarking scheme for image authentication using ICA and DCT. The watermark to be embedded is obtained from the host image itself in terms of the Frobenius norm of the mixing matrix obtained during ICA. These are embedded in the mid-frequency DCT coefficients. The proposed method correctly authenticates the image even under normal image processing operations and it correctly detects tampering and identifies the tampered regions of the image. The average PSNR value in this proposed ICA-based technique is around 97 which makes it superior than the existing watermarking techniques.

Keywords: digital imaging; communication in medicine; DICOM; independent component analysis; ICA; PSNR; medical images; image authentication; blind watermarking; content-based watermarking; image processing; security; discrete cosine transform; DCT.

DOI: 10.1504/IJMEI.2012.046974

International Journal of Medical Engineering and Informatics, 2012 Vol.4 No.2, pp.165 - 175

Published online: 11 Aug 2014 *

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