A robust blind color image watermarking based on Fourier transform domain
TL;DR: The obtained results show that the approach offers good imperceptibility and generates watermarking images robust against various attacks with a high-quality watermark.
About: This article is published in Optik.The article was published on 2020-04-01. It has received 102 citations till now. The article focuses on the topics: Fractional Fourier transform & Discrete Fourier transform (general).
Citations
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TL;DR: Experimental results shows that the proposed methods maintain a high quality watermarked images and are very robust against several conventional attacks.
55 citations
TL;DR: A blind and robust watermarking technique that allows the integration of the electronic patient’s record into a computerized tomography scan and offers excellent imperceptibility and very good robustness against several geometric and destructive attacks is presented.
Abstract: In order to contribute to the security of medical image, we present in this paper a blind and robust watermarking technique that allows the integration of the electronic patient’s record into a computerized tomography scan. In this approach, a discrete wavelet transform is applied to the image before the integration process, then, a topological reorganization of the coefficients of the LL sub-bands is done by the ZigZag scanning method. The obtained coefficients are then combined to integrate the watermark bits. A hash of the electronic patient record being integrated in the image, the integrity of the watermark can easily be verified. After the evaluation of our approach in terms of invisibility and robustness, the experimental results obtained show that our approach offers excellent imperceptibility (with a PSNR above 70 dB) and very good robustness against several geometric and destructive attacks.
47 citations
TL;DR: In this article, a blind watermarking approach for medical image protection is proposed, which consists of the Electronic Patient Record and the image acquisition data, and the watermark is then integrated into the least significant bits of the S component obtained by combining the parity of the successive coefficients.
45 citations
TL;DR: Two new substitution schemes for digital audio watermarking based on the Fourier transform are proposed and show that this approach offers good imperceptibility and generates watermarked audio sample robust against various attacks with a high-quality watermark.
44 citations
TL;DR: The proposed blind and robust approach for medical image protection consists in embedding patient information and image acquisition data in the image and the integration was performed in the medium frequencies of the image.
Abstract: In order to enhance the security of exchanged medical images in telemedicine, we propose in this paper a blind and robust approach for medical image protection. This approach consists in embedding patient information and image acquisition data in the image. This imperceptible integration must generate the least possible distortion. The watermarked image must present the same clinical reading as the original image. The proposed approach is applied in the frequency domain. For this purpose, four transforms were used: discrete wavelets transform, non-subsampled contourlet transform, non-subsampled shearlet transform and discreet cosine transform. All these transforms was combined with Schur decomposition and the watermark bits were integrated in the upper triangular matrix. To obtain a satisfactory compromise between robustness and imperceptibility, the integration was performed in the medium frequencies of the image. Imperceptibility and robustness experimental results shows that the proposed methods maintain a high quality of watermarked images and are remarkably robust against several conventional attacks.
38 citations
References
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TL;DR: A new watermarking algorithm is presented: the method, which operates in the frequency domain, embeds a pseudo-random sequence of real numbers in a selected set of DCT coefficients, which is adapted to the image by exploiting the masking characteristics of the human visual system, thus ensuring the watermark invisibility.
743 citations
TL;DR: The experimental results indicated that the proposed watermarking mechanism can withstand various processing attacks and accurately locate the tampered area of an image.
Abstract: This paper presents a blind dual watermarking mechanism for digital color images in which invisible robust watermarks are embedded for copyright protection and fragile watermarks are embedded for image authentication. For the purpose of copyright protection, the first watermark is embedded using the discrete wavelet transform in YCbCr color space, and it can be extracted blindly without access to the host image. However, fragile watermarking is based on an improved least significant bits’ replacement approach in RGB components for image authentication. The authenticity and integrity of a suspicious image can be verified blindly without the host image and the original watermark. The combination of robust and fragile watermarking makes the proposed mechanism suitable for protecting valuable original images. The experimental results indicated that the proposed watermarking mechanism can withstand various processing attacks and accurately locate the tampered area of an image.
150 citations
TL;DR: A robust copyright protection scheme based on fractional Fourier transform (FrFT) and visual cryptography (VC) and the experimental results show that the proposed scheme is strong enough to resist various signal processing operations.
131 citations
TL;DR: Experimental results show that the proposed color image watermarking is not only robust against common image processing operations such as filtering, JPEG compression, histogram equalization, and image blurring, but also robust against the geometrical distortions.
123 citations
TL;DR: The method presented gradually spreads the watermark information over a region of pixels as implemented by the transform domain techniques to deliver the two essential features of watermarking systems namely, high image quality and high robustness to attacks.
116 citations