Geometrically invariant watermarking for medical images based on digital holography and three-level DWT-SVD

被引：6
|
作者：
Chen, Weixia [1 ]
Gu, Jihua [1 ]
Li, Qin [2 ]
Tang, Xiaoyan [3 ]
Chen, Daqing [1 ]
机构：
[1] Soochow Univ, Sch Phys Sci & Technol, Suzhou 215000, Peoples R China
[2] Changshu Peoples Hosp 2, Med Image Ctr, Changshu 215500, Jiangsu, Peoples R China
[3] Changshu Inst Technol, Coll Phys & Elect Engn, Changshu 215500, Jiangsu, Peoples R China
来源：
APPLIED OPTICS | 2019年 / 58卷 / 15期
基金：
中国国家自然科学基金;
关键词：
QR CODE; SCHEME; ENCRYPTION; ALGORITHM;
D O I：
10.1364/AO.58.004185
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Digital imaging and communications in medicine are being applied widely to improve health care for people, and their security attracted our attention when they are transmitted through the Internet. The paper proposes a digital watermarking method for medical images based on digital holography and three-level discrete wavelength transform (DWT) singular value decomposition (SVD), where a live code including privacy information is transformed into digital holography by an improved computer-generated hologram method. The holography then is embedded into the singular values of the LL3 subband wavelet of the medical image. Experimental results show that the proposed method provides sufficient security results against various attacks, especially geometrical attacks. (C) 2019 Optical Society of America
引用
收藏
页码：4185 / 4191
页数：7
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