摘要
为了提高水印的不可见性和鲁棒性,设计了基于三维轴距的水印算法.首先利用计算鬼成像加密技术对原水印图像进行加密;然后在三维直方图的基础上定义图像的三维轴距,求得轴距最大时所有像素点的集合;最后借助粒子群优化算法,在集合中找到最好的点作为水印嵌的位置.不可见性和鲁棒性仿真实验结果表明,基于三维轴距的水印算法是有效性的.
In order to obtain watermarking with superior robustness and invisibility,a watermarking algorithm based on 3D wheelbase is proposed.Firstly,the watermark image is encrypted by calculating the encryption technology of ghost imaging,then the 3D wheelbase of the image is defined on the basis of 3D histogram,and the set of all pixel points when the wheelbase is maximum is obtained.Finally,the best point in this set is found as the embedding position of the watermark through particle swarm optimization algorithm.Simulation experiments of robustness and invisibility show the effectiveness of the proposed algorithm.
作者
唐晗
陈留洋
鲁荣波
TANG Han;CHEN Liuyang;LU Rongbo(College of Information Science and Engineering,Jishou University,Jishou 416000,Hunan China;College of Land and Tourism,Luoyang Normal University,Luoyang 471934,Henan China)
出处
《吉首大学学报（自然科学版）》
CAS
2021年第3期29-33,共5页
Journal of Jishou University(Natural Sciences Edition)
关键词
计算鬼成像
三维轴距
粒子群
图像加密
鲁棒性
不可见性
computational ghost imaging
three-dimensional wheelbase
particle swarm
image encryption
robustness
invisibility
