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基于Arnold变换和图像梯度的水印算法
引用本文:康健鹏,吴晓波,朱卫华.基于Arnold变换和图像梯度的水印算法[J].后勤工程学院学报,2004,20(4):95-97.
作者姓名:康健鹏  吴晓波  朱卫华
作者单位:后勤工程学院,后勤信息工程系,重庆,400016
摘    要:针对空间域水印嵌入算法鲁棒性不强的问题,利用Arnold变换的周期性,将其应用于水印图像的前期处理,然后再嵌入原始图像的内容(边缘)。使提取的水印图像的错误像素被分散到整个水印图像空间中,提高了人眼视觉系统对水印图像的辨识能力。从试验结果来看,该算法在一定程度上满足了数字水印的鲁棒性要求。

关 键 词:数字水印  Arnold变换  图像梯度
文章编号:1672-7843(2004)04-0095-03
修稿时间:2004年5月19日

Digital Watermarking Embedding Algorithm Based on Arnold Transform and Image Gradient
KANG Jian-peng,WU Xiao-bo,ZHU Wei-hua.Digital Watermarking Embedding Algorithm Based on Arnold Transform and Image Gradient[J].Journal of Logistical Engineering University,2004,20(4):95-97.
Authors:KANG Jian-peng  WU Xiao-bo  ZHU Wei-hua
Abstract:In the paper,aiming at the problems of watermarking embedding algorithm of spatial domain which has not enough robustness,the algorithm is applied to watermark picture in the prophase by the periodicity of Arnold transform.And then the watermark picture after arnold transform is embedded at the edge of of the original image,which makes extracted wrong pixels of watermark picture spread around the whole space of watermark picture.Thus,distinguishing ability to watermark picture of the people's vision system is enhanced.From the result of the experiment,this algorithm meets with the requirement of the digital im-age robustness to a certain extent.
Keywords:digital watermarking  Arnold transform  image gradient
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