Digital Watermarking Using DCT & DWT Technique

Abstract

The digital data are transmitted using the internet so the digital data may be secure, copyright protected and authenticated .Digital watermarking is one of such technology that has been developed to protect digital data or content like text ,audio ,video from any editing or any manipulations .In this paper we analyze performance analysis of different techniques such as DCT,DWT .To check effectiveness ,robustness, imperceptibility  of both the techniques we use parameters such as PSNR,NCC,MSE etc. .The experimental result shows that proposed method is more robust against different kinds of attacks and the watermarked image has good transparency ,further future scope  is also mentioned in paper .