A new image watermarking using texture component: application color image
Saloua Senhaji, Abdellah Aarab · 2012
This paper presents a new robust watermarking scheme for color image based on Partial Differential Equations (PDE). Specifically, the mark is inserted in to texture component obtained after decomposition of the image by PDE. The watermark used is a binary matrix for the texture component. Experimentation has ensured the mark invisibility, the facility of detection of the mark and the robustness against different kinds of attacks. directly modify the intensities or color values of some selected pixels while the frequency-domain techniques modify the values of some transformed coefficients. In the work presented here, we use the spatial domain. So, the watermark embedding is achieved by modifying the pixel values of texture component obtained by decomposing the host image using the PDE. We propose a realistic improvement which is performed under a convenient decomposition of the textured image. This decomposition is based on the mathematical model in the PDE introduced by Meyer (9) which split an image into a geometrical and texture component. The basis idea of our method is to insert a different mark into the each component after decomposing the image by the PDE. This scheme of insertion has the merit to provide a good performance of detection of the mark against attacks because of the redundancy of the watermark in the watermarked image. The rest of the paper is organized as follows. Section 2 describes the proposed watermarking method and in section3, the experimental results are discussed. Finally, some conclusions are drawn in section 4.