Blind Digital Watermarking System Using 2D-Dct

Abstract

In digital network systems the digital documents can be replicated and pass on effortlessly to
extensive individuals with ease and free of cost. Multimedia data like image, video and audio
files can be easily downloaded by public and they can easily manipulates. The approved
proof as a steady and robust watermark should have been embedded in the digital pictures.
The proposed work aims at developing a robust digital watermarking system, it incorporates
an effective watermarking algorithm which solves the above problem. New blind frequency
watermarking algorithm using 2-Dimensional Discrete Cosine Transform and 1-Dimensional
Walsh vectors has been proposed.