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Robust Digital Watermarking Scheme using Contourlet Transform
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TLDR
A novel oblivious and highly robust watermarking scheme using Multiple Descriptions (MD) and Quantization Index Modulation (QIM) of the host image and superior in terms of Peak Signal to Noise Ratio (PSNR) and Normalized Cross correlation (NC).Abstract:
Summary A novel oblivious and highly robust watermarking scheme using Multiple Descriptions (MD) and Quantization Index Modulation (QIM) of the host image is presented in this paper. The watermark is embedded in the Discrete Contourlet Transform domain (CT). Discrete Countourlet Transform (CT) is able to capture the directional edges and contours superior to Discrete Wavelet Transform (DWT). Watermark embedding is done at two stages for achieving robustness to various attacks. This algorithm is highly robust for different attacks on the watermarked image and superior in terms of Peak Signal to Noise Ratio (PSNR) and Normalized Cross correlation (NC). here the part of summary.read more
Citations
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Proceedings ArticleDOI
A watermarking algorithm based on direction of image specific edge
TL;DR: The introduction of Directionlet along specific direction for watermark embedding and extraction enables the watermark more robust against geometric transformations, which outperforms the wavelet- based and contourlet-based in terms of transparency as well as robustness.
Proceedings ArticleDOI
A robust watermarking scheme based on Non-Subsampled Contourlet Transform
TL;DR: A robust blind watermarking scheme is proposed based on Non-Subsampled Contourlet Transform (NSCT) and Singular Value Decomposition (SVD) that has good robustness and invisibility and is suitable for embedding watermarks.
Journal ArticleDOI
A Comparative Study of Digital Watermarking Techniques in Frequency Domain
Ensaf Hussein,Mohamed Belal +1 more
TL;DR: The experimental results show the superiority of CT-based watermarking over DWT and DCTWatermarking techniques, the quality of the watermarked image is excellent, it can include huge amount of hidden data, but it's not much better than other techniques in resisting attacks.
Proceedings ArticleDOI
A novel watermarking scheme against geometrical distortions based on Contourlet transform
TL;DR: A design for data hiding in digital image that robust with both geometric and common signal attacks is proposed, which combines scale-invariant feature transform with Neighborhood Pixel Ratio domain to embed resynchronized information so watermarked image can be reconstructed under geometrical attacks.
Journal ArticleDOI
Zero-Watermarking in Transform Domain and Quadtree Decomposition for Under Water Images Captured by Robot
Ayesha Shaik,V. Masilamani +1 more
TL;DR: A zero-watermarking scheme using non sub-sampled contourlet transform and quadtree decomposition is proposed for RCI and outperforms the existing scheme, and resists most of the geometrical attacks and the signal processing attacks effectively.
References
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Journal ArticleDOI
The contourlet transform: an efficient directional multiresolution image representation
Minh N. Do,Martin Vetterli +1 more
TL;DR: A "true" two-dimensional transform that can capture the intrinsic geometrical structure that is key in visual information is pursued and it is shown that with parabolic scaling and sufficient directional vanishing moments, contourlets achieve the optimal approximation rate for piecewise smooth functions with discontinuities along twice continuously differentiable curves.
Journal ArticleDOI
Improved wavelet-based watermarking through pixel-wise masking
TL;DR: A new approach to mask the watermark according to the characteristics of the human visual system (HVS) is presented, which is accomplished pixel by pixel by taking into account the texture and the luminance content of all the image subbands.
Journal ArticleDOI
A new class of two-channel biorthogonal filter banks and wavelet bases
TL;DR: The authors provide a novel mapping of the proposed 1-D framework into 2-D that preserves the following: i) perfect reconstruction; ii) stability in the IIR case; iii) linear phase in the FIR case; iv) zeros at aliasing frequency; v) frequency characteristic of the filters.
Journal ArticleDOI
SVD-based digital image watermarking scheme
TL;DR: In this paper, a singular value decomposition (SVD)-based watermarking scheme is proposed, which preserves both one-way and non-symmetric properties, usually not obtainable in DCT and DFT transformations.
Directional multiresolution image representations
TL;DR: This thesis focuses on the development of new "true" two-dimensional representations for images using a discrete framework that can lead to algorithmic implementations and a new family of block directional and orthonormal transforms based on the ridgelet idea.
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