An NPT Watermarking Algorithm Using Wavelet Image Combination

Author

Gu, Ji-Hua ; Shang, Yun ; Huang, Bei-jing

Author_Institution

Dept. of Phys. Sci. & Tech., Soochow Univ., Suzhou, China

fYear

2010

fDate

2-4 April 2010

Firstpage

378

Lastpage

381

Abstract

In order to eliminate the artifacts caused by transform in NPT watermarking algorithm effectively, we applied the wavelet image fusion to the algorithm based on discrete cosine transform. The quality of the watermarked image is improved remarkably. However, the noise introduced by image combination degrades the constructed watermark. To deal with it, we performed a pre-process of de-noise before extracting watermark. Experimental results show that the algorithm has a good robustness against JPEG compression, geometric attacks and noises.

Keywords

data compression; discrete cosine transforms; feature extraction; image coding; image denoising; wavelet transforms; JPEG compression; NPT watermarking algorithm; denoising process; discrete cosine transform; geometric attacks; watermark extraction; wavelet image combination; wavelet image fusion; Discrete cosine transforms; Discrete wavelet transforms; Image coding; Image fusion; Information technology; Iterative algorithms; Pixel; Robustness; Watermarking; Wavelet transforms; Image Combination; Image Watermarking; Naturalness Preserving Transform (NPT);

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Information Technology and Security Informatics (IITSI), 2010 Third International Symposium on

Conference_Location

Jinggangshan

Print_ISBN

978-1-4244-6730-3

Electronic_ISBN

978-1-4244-6743-3

Type

conf

DOI

10.1109/IITSI.2010.116

Filename

5453599