Science Alert
Journal of Applied Sciences
  Year: 2010 | Volume: 10 | Issue: 19 | Page No.: 2168-2186
DOI: 10.3923/jas.2010.2168.2186
Digital Watermarking System based on Cascading Haar Wavelet Transform and Discrete Wavelet Transform
Nidal F. Shilbayeh and Adham Alshamary

The aim of this study was to solve problems of modification, forgery, illegal manipulation and distribution of digital image, especially with the rapid growth of transmission techniques. Although, there are many ways to protect the images, the proposed system suggested a new technique to protect the image for the purposes of ownership, copyright and intellectual property. In this study, we present a new robust and secure hybrid watermarking technique based on Haar Wavelet Transformation (HWT) and Discrete Wavelet Transformation (DWT). The proposed method is constructed by cascading two different but complementary techniques: HWT and DWT wavelet transformations to provide a robust resistance to the protected image against different signal processing attacks. Adding a private key to the watermarking will increase the privacy and security, but by embedding watermark in that private key more protection in wavelet transform will result, leading to more resistant against attacks. The new technique has been proposed to solve the problem of illegal manipulation and distribution of digital image, i.e., HWT and DWT system. Performance evaluation of the proposed method showed improved results in terms of imperceptibility, robustness and security in comparison with others systems.
 [Abstract]   [Fulltext PDF]   [Fulltext HTML]   [References]   [View Citation]  [Report Citation]

08 January, 2011
siti hajar binti ab aziz:
hi...i am hajar, and i am a Msc student from malaysia. i am interested regarding your thesis.. now i am doing my thesis regarding image watermarking, and its actually same like yours.except my scope is just dwt only. hope you can share with me more about your coding.. regards..