Copyright protection for color images based on transform domain and luminance component

Abstract

With the aid of Internet technology, multimedia information can be shared with ease over the public networks. This circumstance, however, creates problems of data security. Thus, watermarking or data hiding has become crucial to protect the Intellectual property rights. This paper proposed watermarking scheme for copyright protection based on DCT domain incorporated with HVS characteristics. The proposed scheme embeds watermark into an image by modifying its DC coefficient value. Experiments on grayscale and color images show that the proposed algorithm is imperceptible and robust against common image processing attacks.