Paper Info
Title
Secure fragile watermarking method for image authentication with improved tampering localisation and self-recovery capabilities
Abstract
In this paper, we present a new fragile watermarking method aimed at providing improved tampering localisation and self-recovery capabilities. First, a secure block-wise mechanism, resilient to cropping, is used to localise distorted blocks of pixels. Subsequently, the tampering localisation accuracy is refined by means of an iterative pixel-wise mechanism, which estimates the original watermarked pixels in altered regions. Extensive tests, using a large data-set, are presented to show to what extent the size of the tampered area influences the performance of our method. Moreover, results show that the proposed scheme compares favourably with a method presented in recent literature, in terms of tampering localisation and self-recovery performance. In fact, we show that our method is capable of partially reconstructing a cover image when 5% of its total number of pixels has been cropped.
Year
DOI
Venue
2011
10.1016/j.sigpro.2010.07.019
Signal Processing
Keywords
Field
DocType
self-recovery,self-recovery capability,extensive test,secure block-wise mechanism,secure fragile watermarking method,iterative pixel-wise mechanism,new fragile watermarking method,image authentication,tampering localisation,fragile watermarking,security,localisation accuracy,cover image,self-recovery performance,altered region,distorted block
Iterative reconstruction,Computer vision,Self recovery,Digital watermarking,Authentication,Iterative method,Information protection policy,Image processing,Artificial intelligence,Pixel,Mathematics
Journal
Volume
Issue
ISSN
91
4
Signal Processing
Citations 
PageRank 
References 
33
1.08
14
Authors
2
Name
Order
Citations
PageRank
Sergio Bravo-Solorio11036.62
Asoke K. Nandi294795.46