Abstract Robust zero-watermarking is a protection of copyright approach that both effective and distortion-free, it has grown into core research on the subject digital watermarking. This paper proposes revolutionary for color images using convolutional neural networks (CNN) 2D logistic-adjusted Chebyshev map (2D-LACM). In this algorithm, we first extracted deep feature maps from an original ima...

ABSTRACT: In recent years, many works on digital image watermarking have been proposed all aiming at protection of the copyright of an image document or authentication of data. With the help of my proposed Modified LSB watermarking embedding with Color Histogram Equalization -Contrast Adjustment (CHE-CA) algorithm, the high contrast watermarked image is obtained & watermark can easily be extrac...

Most of the existing color image watermarking schemes were designed to mark the image luminance component only, which have some disadvantages: (i) they are sensitive to color attacks because of ignoring the correlation between different color channels, (ii) they are always not robust to geometric distortions for neglecting the watermark desynchronization. It is a challenging work to design a ro...

In order to protect the digital image copyright, it is necessary design a robust watermarking algorithm. To achieve this purpose, novel color scheme based on an improved QR decomposition proposed in paper. The method gives new algorithm find elements of Q and R matrices instead using Gram–Schmidt for factorization. First, matrix performed by solving set linear equations where diagonal are check...

a watermarking scheme for Grayscale image isproposed based on a family of the chaotic maps and discretecosine transform. Jacobian Elliptic mapis employed to encrypt ofwatermarked logo. Piecewise nonlinear chaotic map is also usedto determine the location of DCT coefficients for the watermarkembedding. The purpose of this algorithm is to improve theshortcoming of watermarking such as small key s...

One of the most important parameters in evaluating a watermarking algorithm is its capacity. Generally, watermarking capacity is expressed by bits per pixel (bpp) unit measure. But this measure does not show what the side effects would be on image quality, watermark robustness and capacity. In this paper we propose a three dimensional measure named Capacity surface which shows the effects of ca...

In a digital watermarking scheme, it is not convenient to carry the original image all the time in order to detect the owner’s signature from the watermarked image. Moreover, for those applications that require different watermark for different copies, it is preferred to utilize some kind of watermark-independent algorithm in extraction. This paper presents a digital color image watermarking sc...

Image watermarking technique embeds copyright information (watermark) into host image so as to perform its protection and authentication. Schemes of embedding digital watermark into grayscale images have been researched and developed greatly. However color image is more common in our everyday life and it contains more information than grayscale image and provides information to against the atta...

In this paper, a novel color image hiding technique using spread grey-based competitive Hopfield neural network (SGHNN) and Hadamard Transform (HT) digital watermarking is proposed. The goal is to offer secure communications in the internet through compress the original color image and embedded into another disguise color image. Our method includes a spread-unsupervised competitive Hopfield neu...