Journal ArticleDOI
Multilevel Encrypted Text Watermarking on Medical Images Using Spread-Spectrum in DWT Domain
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TLDR
A secure multilevel watermarking scheme in which the encrypted text acts as a watermark based on secure spread-spectrum technique for digital images in discrete wavelet transform (DWT) domain is presented.Abstract:
This paper presents a secure multilevel watermarking scheme in which the encrypted text acts as a watermark. The algorithm is based on secure spread-spectrum technique for digital images in discrete wavelet transform (DWT) domain. Potential application of the proposed watermarking scheme is successfully demonstrated for embedding various medical watermarks in text format at different subband decomposition levels depending upon their performance requirements. In the embedding process, the cover CT Scan image is decomposed up to third level of DWT coefficients. Different text watermarks such as personal and medical record of the patient, diagnostic/image codes and doctor code/signature are embedded into the selective coefficients of the second and third level DWT for potential telemedicine applications. Selection of DWT coefficients for embedding is done by column wise thresholding of coefficients values. Also, encryption is applied to the ASCII representation of the text and the encoded text watermark is embedded. The algorithm correctly extracts the embedded watermarks without error and is robust against numerous known attacks without much degradation of the medical image quality of the watermarked image.read more
Citations
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Journal ArticleDOI
A proposed secure multiple watermarking technique based on DWT, DCT and SVD for application in medicine
TL;DR: The proposed algorithm for multiple watermarking based on discrete wavelet transforms, discrete cosine transform and singular value decomposition has been proposed for healthcare applications and has been found to be giving excellent performance for robustness, imperceptibility, capacity and security simultaneously.
Journal ArticleDOI
A blind medical image watermarking: DWT-SVD based robust and secure approach for telemedicine applications
TL;DR: Robustness of the scheme is better than existing scheme for similar set of medical images in terms of normalized correlation coefficient (NCC) and bit-error-rate (BER) and performance comparison of proposed scheme with existing schemes shows proposed scheme has better robustness against different types of attacks.
Journal ArticleDOI
Improved hybrid algorithm for robust and imperceptible multiple watermarking using digital images
TL;DR: The method has been extensively tested and analyzed against known attacks and is found to be giving superior performance for robustness, capacity and reduced storage and bandwidth requirements compared to reported techniques suggested by other authors.
Journal ArticleDOI
Survey of robust and imperceptible watermarking
TL;DR: The paper introduces elementary concepts of digital watermarking, characteristics and novel applications of watermark in detail, and various analysis and comparison of different notable water marking techniques are discussed in tabular format.
Journal ArticleDOI
Multiple-image encryption algorithm based on DNA encoding and chaotic system
Xiaoqiang Zhang,Xuesong Wang +1 more
TL;DR: A new multiple-image encryption (MIE) algorithm based on Deoxyribonucleic acid encoding and chaotic system is proposed in this paper and has excellent encryption effect and high security.
References
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Journal ArticleDOI
The first 50 years of electronic watermarking
Ingemar J. Cox,Matthew L. Miller +1 more
TL;DR: It is expected that copyright applications will be overshadowed by applications such as broadcast monitoring, authentication, and tracking content distributed within corporations, and a variety of applications emerging that add value to media, such as annotation and linking content to the Web.
Journal ArticleDOI
Reversible Image Watermarking Based on Integer-to-Integer Wavelet Transform
TL;DR: The experimental results show that the proposed scheme achieves higher embedding capacity while maintaining distortion at a lower level than the existing reversible watermarking schemes.
Proceedings ArticleDOI
Survey of wavelet-domain watermarking algorithms
Peter Meerwald,Andreas Uhl +1 more
TL;DR: An overview of wavelet-based watermarking techniques available today can be found in this paper, where the authors provide an overview of the wavelet wavelet transform domain and its application in image compression.
Journal ArticleDOI
Reversible Watermarking: Current Status and Key Issues
TL;DR: The aim of this paper is to define the purpose of reversible watermarking, reflecting recent progress, and provide some research issues for the future.
Journal ArticleDOI
Multiple Image Watermarking Applied to Health Information Management
TL;DR: Experimental results indicate the efficiency and transparency of the scheme, which conforms to the strict requirements that apply to regions of diagnostic significance.
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