Image watermarking using genetic algorithm in DCT domain

In the present scenario, because of the great success of the internet, the exchange of digital media over the internet became easy. We can easily transmit audio, video and images. But security and copyright protection of this digital media became a serious issue. So an emerging technique, known as digital watermarking, is used. It is widely used for protecting digital media from duplicacy and unauthorized use. In the presented paper, an approach is presented, in which we use the genetic algorithm concept in the discrete cosine transform domain. The Genetic algorithm is quite a popular method because it is used to find the best place in the cover image to insert watermark in order to achieve robustness and imperceptibility both. The proposed method has been implemented in MATLAB and the results are quite satisfactory under various categories of attacks.