In this paper we propose a new watermarking schema i.e. the combination of color space and wavelet transform. Watermarking is a technique that authenticates a digital picture by hiding the secret information into the image. Now, a lot of algorithms and methods have been developed for greyscale images but the particularities of color spaces have to be studied. On the other hand, the wavelet tran...

This paper proposes an approach for the combined image authentication and compression of color images by making use of a digital watermarking and data hiding framework. The digital watermark is comprised of two components: a soft-authenticator watermark for authentication and tamper assessment of the given image, and a chrominance watermark employed to improve the efficiency of compression. The...

Digital watermarking is a technique for copyright protection. In literature, many watermarking methods for gray images have been presented. Some of them are directly applied to the luminance component of a color image. A previous method applies to the difference between RGB components instead, and shows that the image quality can be improved. In this paper, we present a robust color image water...

In this paper, a digital watermarking technique using new signal processing theory called compressive sensing have been implement and analysis for different embedding monochromic watermark images into color cover images. In order to implement of technique, first convert watermark image into its sparse domain and then convert into linear measurement vector using basis matrix and measurement matr...

Modern digital communication requires watermarking technique for copyright and user’s authentication purpose. In this paper, a blind digital watermarking technique has been proposed using Discrete Wavelet Transform (DWT) to embed information in midfrequency. Three chaotic variations of standard AES algorithm are used to shuffle the original pixel positions of watermark color image. The original...

Abstract Image authentication approaches have gotten a lot of interest recently as way to safeguard transmitted images. Watermarking is one the many ways used protect systems are pc-based that limited portability difficult use in harsh environments military use. We employ embedded devices like Raspberry Pi get around PC’s mobility limitations. Digital image watermarking technology secure and en...

Nowadays, texture images have been presented and used in a great deal of industry and life application and copyright protection of texture images has become urgent problem. With this reason, we propose a color-texture image watermarking algorithm utilizing texture properties. The proposed algorithm selects suitable blocks to embed a watermark by using energy and homogeneity properties of grey l...

A new spatial domain probability based watermarking scheme for color Images is proposed. The blue channel of the color image has been used for watermark embedding. Host image is divided into 8x8 blocks and each bit of the binary encoded watermark is embedded in each such block. For each inserted bit, intensity of all the pixels in the block is modified according to the embedding algorithm. Non-...

Watermarking is highly demanding in recent times for the protection of multimedia data in network environment from illegal copying, violation of copyright, authentication etc, while compression of multimedia signals is essential to save storage space and transmission time. It is also well known the importance and effectiveness of compression techniques to store transmit and retrieve visual info...

In the security of digital contents, almost all previous works tried to attend either the copyright protection issue or the content authentication issue, however recently some proposals try to solve simultaneously both problems. In this paper, a multipurpose method that tries to solve both problems for color images, using two watermarking algorithms, is proposed. The first algorithm is based on...