Image Watermarking Based on DWT-SVD

Image watermark is one of the interesting fields of image processing which hide information within a digital image. The main purpose of this paper is to propose a combination technique of discrete wavelet transform and singular value decomposition to achieve a good image watermarking. Colour images are here utilized for image watermarking. In the proposed method, the main image is first transformed into the wavelet domain and then the watermark is embedded into the reference image after modifying by the singular values of reference image using the singular values of the watermark. Experimental results are then applied by the proposed method for illustrating the system efficiency.

Digital watermarking; color image; DWT; SVD.