NDLI: Robust multiple watermarks for medical image based on DWT and DFT

Content Provider	IEEE Xplore Digital Library
Author	Jingbing Li Chunhua Dong Xianhua Han Yen-wei Chen
Copyright Year	2011
Description	Author affiliation: Coll. of Inf. Sci. & Technol., Hainan Univ., Haikou, China (Jingbing Li; Chunhua Dong) \|\| Coll. of Inf. Sci. & Eng., Ritsumeikan Univ., Kasatsu, Japan (Xianhua Han; Yen-wei Chen)
Abstract	Medical images must be stored in a secure way to preserve unauthorized disclosure of patient data. This paper proposes an algorithm of robust multiple watermarks to serve these purposes using DWT and DFT. A part of sign sequence of DWT and DFT coefficients are used as feature vector for enhancing the robustness against rotation attacks, scaling attacks, translation attacks and cropping attacks. Moreover, the content of medical image remains unchanged with our proposed algorithm which is one kind of the zero-watermarking technology. We describe how to extract the feature vector of medical image, and then, embed and extract the multiple watermarks. The results of experiment indicate that the watermark scheme has strong robustness, and can embed much more data compared with the existing watermarking techniques.
Sponsorship	IEEE
Starting Page	895
Ending Page	899
File Size	192308
Page Count	5
File Format	PDF
ISBN	9781457704727
e-ISBN	9788988678558
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-11-29
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	AICIT
Subject Keyword	DWT Multiple watermarks DFT Discrete Fourier transforms Watermarking Medical image Feature extraction Robustness Vectors Discrete wavelet transforms Biomedical imaging
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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