Title :
Robust Algorithm of Digital Image Watermarking Based on Discrete Wavelet Transform
Author :
Li, Na ; Zheng, Xiaoshi ; Zhao, Yanling ; Wu, Huimin ; Li, Shifeng
Author_Institution :
Shandong Comput. Sci. Center, Ji´´nan
Abstract :
In this paper, a robust algorithm of digital image watermarking based on discrete wavelet transform is introduced. It adds binary image watermark into gray image and the host image is required for detecting. The algorithm have two characteristics: (1) It is adapted to various gray images owing to using the mean value of selected coefficients. (2) Arnold transform pretreatment eliminates spatial correlation and disperses the error bits among all pixels to make watermarking more strongly robust against cropping operation. Experiment results show that the proposed algorithm is invisible and robust against common image processing and cropping operation.
Keywords :
discrete wavelet transforms; image coding; watermarking; binary image watermark; cropping operation; digital image watermarking; discrete wavelet transform; gray image; image processing; robust algorithm; spatial correlation; Computer security; Digital images; Discrete wavelet transforms; Electronic commerce; Frequency; Pixel; Robustness; Watermarking; Wavelet analysis; Wavelet domain; Arnold transform; cropping operation; digital image watermarking; discrete wavelet transform; robustness;
Conference_Titel :
Electronic Commerce and Security, 2008 International Symposium on
Conference_Location :
Guangzhou City
Print_ISBN :
978-0-7695-3258-5
DOI :
10.1109/ISECS.2008.140
