文章基本信息

标题：Public-Key Inter-Block Dependence Fragile Watermarking for Image Authentication Using Continued Fraction
本地全文：下载
作者：Chin-Chen Chang ; Wen-Chuan Wu ; Yu-Chen Hu 等
期刊名称：Informatica
印刷版ISSN：1514-8327
电子版ISSN：1854-3871
出版年度：2004
卷号：28
期号：2
页码：147-152
出版社：The Slovene Society Informatika, Ljubljana
摘要：In this paper, a novel fragile watermarking scheme based on the continued fraction technique is pro-posed. The goal of this scheme is to verify the integrity of a watermarked image. The feature value of the image is generated from the calculation of the continued fraction. The feature value is regarded as the important information to be hidden in the image. If the watermarked image is suspected of being tem-pered with, the watermark extraction procedure could be used for verification. We do not to use another image as the watermark image in our scheme. The proposed scheme can solve the weaknesses in the public key blockwise-independent watermarking scheme proposed by Wong in 1998. This is because the proposed scheme uses the continued fraction technique to achieve inter-block dependence for image au-thentication. According to experimental results, the image quality of each watermarked image is good, and the visual quality of the watermarked image is not affected when the proposed watermark insertion procedure is carried out.
关键词：fragile watermark; public key encryption; and continued fraction