A Robust Color Image Watermarking Improvement Scheme Based on Image Normalization

Abstract

Many researchers concerned with watermarking for copyright protection purposes and several watermarking methods have been developed in order to overcome that problems caused by attacks especially geometric attacks which have more challenging issue.. There is a main issue related to the image copyrights protections watermarking and its robustness against geometric attacks. One of the solutions is watermarking based normalization technique which provides invariant properties against geometric attacks. There is a need for a deep investigation of the robust watermarking based normalization technique to guarantee achieving the robustness against geometric attacks while conserving the image quality. This paper is mainly focuses on the topic of digital image watermarking. It presents investigation and improvement of one existing algorithm which was introduced to be a robust color image watermarking scheme based on image normalization technique in order to make the system resistant to signal processing and geometric attacks. The improvement makes this algorithm robust to geometric attacks such as rotation, scaling and translation. Related theories used in watermark embedding and extraction procedures are illustrated in this work. Results and evaluation of watermarking system are described will be included in this paper.