Wavelet Based Robust Digital Watermarking Technique Using Reverse Additive Algorithm (RAA)

There are available several watermarking techniques used for data security. Digital media normally assures fairly high quality, nevertheless can be easily reproduced in a perfect form. This perfect reproducibility takes an advantage from certain point of view, while it produces an essential disadvantage, since digital media is frequently copied illegally. A solution of this problem is to embed digital watermark that is not perceived clearly by usual people, but represent the proper right of original product. In this paper a Novel DWT based watermarking technique has been proposed and implemented using MATLAB .This technique shows better performance with respect to robustness and reliability than other existing technique.