医学图像水印鲁棒性能优化算法研究
Research on Robust Performance Optimization Algorithm of Medical Image Watermarking
王玲玲 1刘元琳1
作者信息
- 1. 海口经济学院网络学院,海南海口 570100
- 折叠
摘要
本文提出一种基于DCT变换和Chebyshev混沌映射的水印算法,适用于提高医学图像的安全性.首先,进行原始医学图像的特征提取,将初始二值水印与混沌映射相结合,通过运算输出水印密钥系数.在此基础上完成水印的嵌入与提取.最后在Matlab中通过编程进行实验仿真,并对其进行抗攻击性能测试.实验结果证实该算法能够有效实现数字水印的嵌入和提取,并能够获得较好的鲁棒性.研究结果可以更好地为医学图像的传输安全问题提供解决方案.
Abstract
In this paper,a watermarking algorithm based on DCT transform and Chebyshev chaotic mapping is proposed,which is suitable for improving the security of medical images.Firstly,the feature extraction of the original medical image is carried out.The initial binary watermark is combined with the chaotic map,and the watermark key coefficient is output by operation.Finally,the experimental simulation is carried out by programming in Matlab,and the anti-attack performance is tested.The experimental results show that the algorithm can effectively realize the embedding and extraction of digital watermark and can obtain better robustness.The research results can better provide solutions for the transmission security of medical images.
关键词
医学图像处理/Chebyshev混沌映射/DCT变换Key words
medical image processing/Chebyshev chaotic map/DCT transform引用本文复制引用
基金项目
2022年度海口经济学院校级重点科研项目(HJKYZD22-04)
出版年
2024
NETL
NSTL
万方数据