摘要
提出了一种时域上的水印隐藏与检测算法———基于可分逆模糊化的脆弱水印算法。其原理是将水印隐藏到图像的一行/列中,再通过高斯模糊化将水印信息进一步隐藏到其相邻的行/列中。在水印检测过程中,通过可分逆模糊化算法检测并估计出嵌入水印。实验结果表明,这种算法隐藏水印具有隐蔽性和脆弱性,同时能够对攻击方位进行准确定位,是一种很有前途的脆弱水印算法。
A novel spatial region fragile watermarking algorithm based on the separable debluring is proposed. The watermarking message is hidden, firstly, in specific columns/rows of an image in a way similar to LSB. After a blur operation on the whole image, those columns/rows are discarded and replaced by random data to make the marked columns/rows unpredictable. At the receiver′s side, with the knowledge of blur and locations of the hidden messages, the separable debluring method is used to exactly unveil the hidden messages.Unlike previously proposed techniques, this novel approach provides information on specific locations of the image that have been modified. This allows the user to make application\|dependent decisions concerning whether an image still has credibility. \;
出处
《红外与激光工程》
EI
CSCD
北大核心
2003年第1期101-104,108,共5页
Infrared and Laser Engineering
