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| A New Watermarking Approach Based on Combination of Reversible
Watermarking and CDMA in Spatial and DWT Domain
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Full
text: |
 PDF(459.4KB) |
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Source |
International Journal of Security (IJS) |
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Table of Contents |
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Download
Complete Issue PDF(864.83KB) |
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Volume: 5 Issue: 1 |
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Pages: 1-61 |
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Publication
Date: May / June 2011 |
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ISSN
(Online): 1985-2320 |
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Pages |
1 - 12 |
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Author(s) |
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Published
Date |
04-04-2011 |
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Publisher |
CSC
Journals, Kuala Lumpur,
Malaysia |
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ADDITIONAL
INFORMATION |
| Keywords Abstract References Cited by Related Articles Collaborative
Colleague |
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KEYWORDS: Watermarking, Reversible Watermarking, CDMA, Integrity, Authentification, Confidentiality |
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| This Manuscript is indexed in the following databases/websites:- |
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| 1. Directory of Open Access Journals (DOAJ) |
| 2. Docstoc |
| 3. Google Scholar |
| 4. WorldCat |
| 5. Scribd |
| 6. iSEEK |
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| Image watermarking can be defined as a technique that allows insertion of imperceptible and indelible
digital data into an image. In addition to its initial application which is the copyright, watermarking can be used in
other fields, particularly in the medical field in order to contribute to secure images shared on the network for
telemedicine applications. In this report we study some watermarking methods and the comparison result of their
combination, the first one is based on the CDMA (Code Division Multiple Access) in DWT and spatial domain and
its aim is to verify the image authenticity whereas the second one is the reversible watermarking (the least
significant bits LSB and cryptography tools) and the reversible carte mapping RCM its objective is to check the
integrity of the image and to keep the Confidentiality of the patient data. A new scheme of watermarking is the
combination of the reversible watermarking method based on LSB and cryptography tools and the method of
CDMA in spatial and DWT domain to verify the three security properties Integrity, Authenticity and
confidentiality of medical data and patient information .In the end ,we made a comparison between these methods
within the parameters of quality of medical images. Initially, an in-depth study on the characteristics of medical
images would contribute to improve these methods to mitigate their limits and to optimize the results. Tests were
done on IRM kind of medical images and the quality measurements have been done on the watermarked image to
verify that this technique does not lead to a wrong diagnostic. The robustness of the watermarked images against
attacks has been verified on the parameters of PSNR, SNR, MSE and MAE which the experimental result
demonstrated that the proposed algorithm is good and robust in DWT than in spatial domain. |
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| S.Bekkouche : Colleagues
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| A.Chouarfia : Colleagues
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