Fragile watermarking based on encoding of the zeroes of the z-transform
Ho, Anthony, Zhu, Xunzhan, Shen, Jun and Marziliano, Pina (2008) Fragile watermarking based on encoding of the zeroes of the z-transform IEEE T INF FOREN SEC, 3 (3). pp. 567-569.
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Abstract
In this paper, a new fragile watermarking method for digital image authentication is proposed based on the zero locations of the z-transform. The z-transform domain is a new transform space for fragile watermark embedding. Our watermarking method is designed by exploiting the sensitivity of the positions of the zeroes of the z-transform around the unit circle to any change made on the host image. The watermarking system can localize the portions of a watermarked image that have been tampered with with high accuracy. In addition, the newly proposed scheme is more secure than normal least-significant bits-based fragile watermarking techniques. Experimental results as well as the theoretical analysis demonstrated the fragility and accuracy of the new method.
Item Type: | Article | |||||||||||||||
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Divisions : | Faculty of Engineering and Physical Sciences > Electronic Engineering > Centre for Communication Systems Research | |||||||||||||||
Authors : |
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Date : | September 2008 | |||||||||||||||
DOI : | 10.1109/TIFS.2008.926994 | |||||||||||||||
Uncontrolled Keywords : | Authentication, Fragile watermarking, Z-transform, Image authentication | |||||||||||||||
Depositing User : | Melanie Hughes | |||||||||||||||
Date Deposited : | 12 Aug 2010 09:35 | |||||||||||||||
Last Modified : | 16 Jan 2019 16:23 | |||||||||||||||
URI: | http://epubs.surrey.ac.uk/id/eprint/2032 |
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