A medical image authentication method based on restorable watermarking / 南方医科大学学报
Journal of Southern Medical University
;
(12): 959-962, 2008.
Article
in Chinese
| WPRIM
| ID: wpr-270236
ABSTRACT
In this paper, a restorable watermarking algorithm is proposed for medical image content authentication. Important DWT coefficients are chosen to be coded with the SPIHT algorithm for generating watermarking. The improved security watermark scrambled by Arnold transformation was then embedded into the lower bits of the image data. Finally, the chain structure was used to detect the watermarking and identify the altered positions. The altered data in an image was restored by SPIHT decoding. The experimental results demonstrated that the watermarked image not only possessed good perceptual transparence but also allowed location and restoration of the tampered content.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Reference Standards
/
Biomedical Engineering
/
Algorithms
/
Diagnostic Imaging
/
Image Interpretation, Computer-Assisted
/
Medical Records Systems, Computerized
/
Computer Security
/
Methods
Type of study:
Diagnostic study
/
Prognostic study
Language:
Chinese
Journal:
Journal of Southern Medical University
Year:
2008
Type:
Article
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