Wu, Xiaoqi, Li, Jingbing ORCID: https://orcid.org/0000-0002-2386-3728, Tu, Rong, Cheng, Jieren, Bhatti, Uzair Aslam and Ma, Jixin (2018) Contourlet-DCT based multiple robust watermarkings for medical images. Multimedia Tools and Applications, 78 (7). pp. 8463-8480. ISSN 1380-7501 (Print), 1573-7721 (Online) (doi:10.1007/s11042-018-6877-5)

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Abstract

In the current medical system, the privacy and security of the medical information with respect to its transmission and storage is a key challenge. In pursuit of this, we proposed a contourlet transform and Discrete Cosine Transform (DCT) based multiple robust watermarking algorithms for medical imaging. The proposed scheme uses contourlet transform to extract multidirectional and multiscale texture information, and then the DCT was used to acquire the feature vector in the low frequency directional subbands. Then we used Logistic Map to encrypt the watermark to ensure the security of the original watermarking information under a chaotic system. In watermark embedding and extraction phases, we adopted zero-watermarking technique to ensure the integrity of the medical images. Our experimental results show that the proposed algorithm can embed much more data with less complexity and dose not change the pixel value of the original image. Moreover, the proposed algorithm can extract the watermark effectively with good invisibility and robustness to common and geometric attacks.

Item Type:	Article
Uncontrolled Keywords:	Medical image, Contourlet-DCT, Zero watermarking, Robust
Subjects:	Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Faculty / School / Research Centre / Research Group:	Faculty of Liberal Arts & Sciences > Computational Science & Engineering Group (CSEH) Faculty of Engineering & Science > School of Computing & Mathematical Sciences (CMS) Faculty of Engineering & Science
Last Modified:	04 Mar 2022 13:06
URI:	http://gala.gre.ac.uk/id/eprint/24323

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