Compression resistant multichannel color image watermarking

Watermarking is the embedding of data into images such that it may or may not visible in the images. It´s essential in today´s world for copyright protection and identifying the rightful owner of the image in today´s world of internet. Generally, watermarking involves two stages namely embedding of watermark and extraction of watermark. There are various attacks which considerably degrade the quality of extracted watermark often resulting in imperceptibility of the watermark. These attacks include Image Compression, Geometric Attacks such as rotation, cropping, Addition of Noise, Filtering in frequency domain etc. It is desirous that any watermarking scheme survives compression attack because in today´s world images are compressed before they are uploaded on internet for sharing. In this paper we present a watermarking scheme that involves watermarking a colored image with a colored watermark that can tolerate compression attacks. Furthermore, our scheme involves multiple stages which results in an increased level of copyright protection to colored images.