A fuzzy based ROI selection for encryption and watermarking in medical image using DWT and SVD

Nowadays secure medical image watermarking had become a stringent task in telemedicine. This paper presents a novel medical image watermarking method by fuzzy based Region of Interest (ROI) selection and wavelet transformation approach to embed encrypted watermark. First, the source image will under...

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Bibliographic Details
Published inMultimedia tools and applications Vol. 80; no. 5; pp. 7167 - 7186
Main Authors K, Balasamy, S, Suganyadevi
Format Journal Article
LanguageEnglish
Published New York Springer US 01.02.2021
Springer Nature B.V
Subjects
Algorithms
Computer Communication Networks
Computer Science
Critical point
Data Structures and Information Theory
Encryption
Medical imaging
Multimedia
Multimedia Information Systems
Robustness
Special Purpose and Application-Based Systems
Telemedicine
Tomography
Watermarking
Wavelet transforms
Key component
Wavelet transform
Encryption
Fuzzy ROI
Watermarking
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Summary:Nowadays secure medical image watermarking had become a stringent task in telemedicine. This paper presents a novel medical image watermarking method by fuzzy based Region of Interest (ROI) selection and wavelet transformation approach to embed encrypted watermark. First, the source image will undergo fuzzification to determine the critical points through central and final intensity along the radial line for selecting region of interest (ROI). Second, watermark image is altered to time-frequency domain through wavelet decomposition where the sub-bands are swapped based on the magnitude value obtained through logistic mapping. In the each sub-band all the pixels get swapped, results in fully encrypted image which guarantees the watermark to a secure, reliable and an unbreakable form. In order to provide more robustness to watermark image, singular values are obtained for encrypted watermark image and key component is calculated for avoiding false positive error. Singular values of the source and watermark image are modified through key component. Experimental results reveal that the proposed algorithm attains high robustness and improved security to the watermarked image against various kinds of attacks.
ISSN:1380-7501
1573-7721
DOI:10.1007/s11042-020-09981-5