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Robust image-adaptive watermarking using an adjustable ...
This paper presents a novel spread spectrum based image-adaptive watermarking technique where selective embedding of watermark has been done in small building blocks of the image, depending upon the respective entropies of the blocks. Novelty of this method lies in the flexibility of its strength factor which can be adjusted easily in order to obtain a required level of visual quality of the ......
An image adaptive, wavelet-based watermarking of digital ...
In detail, the watermark is an interference signal inserted into a media data signal. Watermark of digital images must be: invisible, robust to attacks and tamper-resistant to legitimate signal processing operations ; it must have a low rate of false alarm and a high level of secrecy to generate the watermark information.A typical formulation of watermarking process counts two schemes ......
CiteSeerX — ROBUST IMAGE ADAPTIVE WATERMARKING USING FUZZY ...
CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): In this paper we have proposed novel hardware for an adaptive encrypted watermarking method based on fuzzy logic. Fuzzy logic is used for data fusion, and it builds a human visual system (HVS) model for spatial masking in a wavelet domain. Encryption and digital watermarking both techniques must be incorporated to ......
 Ph. D. (Electronics), 2004 Life Member, BMESI India.
30. “Robust Digital Image-Adaptive Watermarking Using BSS Based Extraction Technique” International Journal of Image Processing(IJIP),ISSN1985-2304,Vol.4,Issue 1, March-2010,pp.77-88. 31. “Digital Color Image–Adaptive Watermarking using Blind Source Separation”,International Journal
A New Digital Watermarking Algorithm Based On WBCT ...
The paper presents an imperceptible and robust digital watermarking algorithm using wavelet-based contourlet transform (WBCT), The WBCT can give the anisotropy optimal representation of the edges and contours in the image by virtue of the characteristics of multi-scale framework and multi-directionality.
Image-adaptive Watermarking Using Visual ... - CiteSeerX
In this paper, we describe digital image watermarking techniques, known as perceptually based watermarks, that are designed to exploit aspects of the human visual system. In the most general sense, any watermarking technique that attempts to incorporate an invisible mark into an image is perceptually based.
Contourlet-based image adaptive watermarking - ScienceDirect
3. Contourlet-based image adaptive watermarking (CIAW) scheme. The watermark W to be embedded can be arranged as a set of matrices W s, d (i, j) with the size M W ×N W and the pseudo-random binary values {−1, 1}.
OSA | An optimized watermarking scheme using an encrypted ...
In this paper, a novel secure optimal image watermarking scheme using an encrypted gyrator transform computer generated hologram (CGH) in the contourlet domain is presented. A new encrypted CGH technique, which is based on the gyrator transform, the random phase mask, the three-step phase-shifting interferometry and the Fibonacci transform, has been proposed to produce a hologram of a ...
Digital Image Watermarking Techniques: A Review
Advancements in science and technology have introduced the need to protect data, authenticate data, integrate data, assert ownership, content labelling and security. Digital Watermarking schemes protect all forms of digital data. Digital Image Watermarking can be applied to gray scale, halftone, color, medical and 3D images. The process of watermarking can be broadly classified into three ......
[PDF] A Novel Digital Watermarking Scheme Using Neural ...
In this paper, a novel watermarking method based on wavelet coefficient quantization using artificial neural networks is proposed. Imperceptibility and robustness are known as the main contradictory requirements of every watermarking scheme. In the proposed method, better compromises are achieved applying neural networks to adjust the watermark strength....
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