| 医学图像数字水印的非线性方法 |
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| 引用本文： | 张超,周慧忠. 医学图像数字水印的非线性方法[J]. 计算机工程与设计, 2006, 27(6): 1052-1055 |
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| 作者姓名： | 张超 周慧忠 |
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| 作者单位： | 浙江大学,生物医学工程系,浙江,杭州,310027;浙江省安全技术质量检验中心,浙江,杭州,310013 |
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| 摘 要： | 医学图像在存储和传输过程中，不允许做有损压缩等变换。医院给出图像必须是要负责任的，所以医学图像不允许别人改动，特别是在病灶区不能改动。为了确保达到这一目的，一种新的采用符号动力学方法的数字水印被提出。根据这一方法，在嵌入水印的时候，可以使得图像中的关键部分不需要修改。一旦有人改动图像，马上可以从水印检查中发现，可以确保图像不被别人改动。
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| 关 键 词： | 数字水印 符号动力学 参数估计新方法 医学图像 病灶区 |
| 文章编号： | 1000-7024（2006）06-1052-04 |
| 收稿时间： | 2005-03-16 |
| 修稿时间： | 2005-03-16 |
Non-linear method of medical image digital watermarking |
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| ZHANG Chao,ZHOU Hui-zhong. Non-linear method of medical image digital watermarking[J]. Computer Engineering and Design, 2006, 27(6): 1052-1055 |
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| Authors: | ZHANG Chao ZHOU Hui-zhong |
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| Affiliation: | 1. Department of Biomedical Engineering, Zhejiang University, Hangzhou 310027, China; 2. Zhejiang Security Technology Quality Test Center, Hangzhou 310013, China |
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| Abstract: | Medical image doesn't be allowed to do transform of destroyed compression when it is stored and transmitted.Hospitals are responsible for its medical images.Medical image should be prohibited from being modified,especially in focus.In order to achieve this purpose,a medical image digital watermarking method based on symbolic dynamics is proposed.When the watermarking is embed-ded,the key area of medical image needs not to be modified by using this method.Once medical image is modified,this situation may be found in order to make medical image intact by checking watermarking. |
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| Keywords: | digital watermarking symbolic dynamics new parameter estimation medical image focus |
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