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Robust and Imperceptible Spread-Spectrum Watermarking for Telemedicine Applications

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Proceedings of the National Academy of Sciences, India Section A: Physical Sciences Aims and scope Submit manuscript

Abstract

This paper presents a new robust and secure digital watermarking scheme for its potential application in Telemedicine. The algorithm embeds medical text watermarks such as patient’s identity, image identity code and doctor’s identity into selected sub-band discrete wavelet transform (DWT) coefficients of the cover medical image using spread-spectrum technique. In the embedding process, the cover image is decomposed up to third level DWT coefficients. Three different text watermarks are embedded into the selected horizontal and vertical sub band DWT coefficients of the first, second and third level respectively. Selection of these coefficients for embedding purpose is based on threshold criteria defined in this paper. Robustness of the proposed watermarking scheme is further enhanced by applying error correcting code to the ASCII representation of the text watermark and the encoded text watermark is finally embedded into the cover medical image. It is found that the proposed scheme correctly extracts the embedded watermarks without error and provides high degree robustness against numerous known attacks while maintaining the imperceptibility of watermarked image.

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Authors and Affiliations

  1. Department of CSE and IT, Jaypee University of Information Technology, Solan, Himachal Pradesh, India

    Amit Kumar Singh

  2. Department of Electronics & Communication Engineering, Motilal Nehru National Institute of Technology, Allahabad, India

    Basant Kumar

  3. Department of Computer Engineering, NIT, Kurukshetra, Kurukshetra, Haryana, India

    Mayank Dave

  4. Department of Electronics Engineering, IIT (BHU), Varanasi, Uttar Pradesh, India

    Anand Mohan

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  1. Amit Kumar Singh
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  2. Basant Kumar
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  3. Mayank Dave
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  4. Anand Mohan
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Correspondence to Amit Kumar Singh.

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Singh, A.K., Kumar, B., Dave, M. et al. Robust and Imperceptible Spread-Spectrum Watermarking for Telemedicine Applications. Proc. Natl. Acad. Sci., India, Sect. A Phys. Sci. 85, 295–301 (2015). https://doi.org/10.1007/s40010-014-0197-6

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  • DOI: https://doi.org/10.1007/s40010-014-0197-6

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