ISSN : 1796-2048
Volume : 4    Issue : 3    Date : June 2009

A Robust Watermarking and Image Authentication Scheme used for Digital Contant Application
Chih-Ming Kung, Shu-Tsung Chao, Yen-Chen Tu, Yu-Hua Yan, and Chih-Hsien Kung
Page(s): 112-119
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The development of computers and Internet has exploded in the last few years. The digital images
are distributed and duplicated easily through WWW, thus the protection of the intellectual property
rights of digital images becomes an important issue. In this paper, we proposed two techniques
that are robust watermarking and image authentication scheme. The proposed scheme includes
two parts. The first is a robust watermarking scheme performed in the frequency domain. It can be
used to prove the ownership. The second is a signature process, which can be used to prove the
integrity of the image. The input of the signature process is the edge properties extracted from the
image. The signature can be correctly verified when the image is incidentally damaged such as
lossy compression. Such a scheme can provide a high degree of robustness against JPEG
compression attacks. Experimental results are also presented to demonstrate the validity and
robustness of the new approach.

Index Terms
Watermark, Robust, Authentication