High Capacity and Secure Watermarking for Medical Images Using Tchebichef Moments
Loading...
Date
2020-12
Authors
Bastani, Azadeh
Ahouz, Fatemeh
ORCID
Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Společnost pro radioelektronické inženýrství
Altmetrics
Abstract
Using Tchebichef Moments, this study has introduced a new method for imperceptible watermarking of the medical images with a high embedding capacity and robustness against the various attacks. The suggested method applies conditional quantization based on dither modulation to minimize the number of the moment orders that need to be changed. Reduction of modified moments increases the watermark imperceptibility and hence decreases the attacks probability. The proposed method has been examined in the presence of such factors as quantization step and watermark size. Experimental results show that average PSNR is 53.91 dB for 16384 embedding watermark bits. Moreover, the introduced algorithm has been tested for known attacks like scaling, cropping, noise, etc. It has been shown that our proposed method has proper security and robustness against various attacks. In addition, zero false positive rate on non-watermarked images has been obtained.
Description
Citation
Radioengineering. 2020 vol. 29, č. 4, s. 636-643. ISSN 1210-2512
https://www.radioeng.cz/fulltexts/2020/20_04_0636_0643.pdf
https://www.radioeng.cz/fulltexts/2020/20_04_0636_0643.pdf
Document type
Peer-reviewed
Document version
Published version
Date of access to the full text
Language of document
en