Proceedings ArticleDOI
Robust Watermarking Scheme Based on Multiresolution Fractional Fourier Transform
B. Gaurav,R. Balasubramanian +1 more
- pp 1-8
TLDR
A new robust watermarking scheme is proposed in multiresolution fractional Fourier transform domain using singular value decomposition and is able to withstand a variety of attacks.Abstract:
In this paper, a new robust watermarking scheme is proposed in multiresolution fractional Fourier transform domain using singular value decomposition The watermark is embedded in the high frequency sub-band of the host image at coarsest level Although the schemes based on SVD are robust but fail under ambiguity attacks In this attack, both the owner and attacker can extract their watermark from the watermarked image To prevent ambiguity, the normalized mass matrix is formed and embedded in the host image In extraction, normalized mass matrix is extracted first and compared with original one If the similarity is found then the singular values are extracted to construct the watermark Experimental evaluation demonstrates that the proposed scheme is able to withstand a variety of attacksread more
Citations
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Journal ArticleDOI
Biometrics inspired watermarking based on a fractional dual tree complex wavelet transform
TL;DR: A novel biometrically generated keys in the embedding process of a gray-scale watermark using a newly proposed mathematical transform, namely the fractional dual tree complex wavelet transform (FrDT-CWT), and singular value decomposition (SVD) are used.
Journal ArticleDOI
A new aspect in robust digital watermarking
TL;DR: An attempt in which a new watermarking scheme is presented where the size of host image is very small when compare with watermark image and a reliable watermark extraction scheme is developed for extracting both the watermarks.
Journal ArticleDOI
Secure randomized image watermarking based on singular value decomposition
TL;DR: The proposed scheme essentially rectifies the ambiguity problem in the SVD-based watermarking and randomly upscale the size of host image using reversible random extension transform followed by the embedding of logo watermark in the wavelet frame domain.
Journal ArticleDOI
Hybrid Watermarking Algorithm using Finite Radon and Fractional Fourier Transform
TL;DR: A watermarking scheme based on finite radon transform (FRAT), fractional Fourier Transform (FRFT) and singular value decomposition is proposed, which provides additional degree of freedom in security, robustness, payload capacity and visual transparence.
Patent
Method for inserting, in the fourier domain, a digital watermark in an image and corresponding method for detecting a digital watermark in an image to be analyzed
TL;DR: In this article, a method for inserting a digital watermark in an image by an insertion device is described, where the watermark includes a set of watermarking coefficients each associated with a distinct determined position of a given quadrant among the quadrants of the Fourier domain.
References
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The discrete fractional Fourier transform
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On Namias's fractional Fourier transforms
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Proceedings ArticleDOI
The fractional fourier transform
Haldun M. Ozaktas,M. Alper Kutay +1 more
TL;DR: An overview of applications which have so far received interest are given and some potential application areas remaining to be explored are noted.
Proceedings ArticleDOI
A multiresolution watermark for digital images
TL;DR: A new multiresolution watermarking method based on the discrete wavelet transform (DWT), where Pseudo-random codes are added to the large coefficients at the high and middle frequency bands of the DWT of an image.
Journal ArticleDOI
Wavelet tree quantization for copyright protection watermarking
Shih-Hao Wang,Yuan-Pei Lin +1 more
TL;DR: This paper proposes a wavelet-tree-based blind watermarking scheme for copyright protection that embeds each watermark bit in perceptually important frequency bands, which renders the mark more resistant to frequency based attacks.
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