Watermark resynchronization: an efficient approach based on Eulerian tours around a robust skeleton
Authors: Ntalianis, Klimis 
Raftopoulos, Konstantinos A. 
Parker-Wood, Aleatha 
Tzouveli, Paraskevi 
Tsapatsoulis, Nicolas 
Ferecatu, Marin 
Issue Date: 1-Dec-2013
Conference: 14th IFIP TC 6/TC 11 International Conference Communications and Multimedia Security (CMS 2013), 25-26 September 2013, Magdeburg, Germany 
Book: Communications and Multimedia Security (CMS 2013) 
Series: Lecture Notes in Computer Science
Keywords: Eulerian tours, Global-Local transformation, Object-based watermarking, Resynchronization, Skeleton transform
Abstract: 
The existing block-based approaches, albeit successful in resisting frequency domain attacks, are sensitive to geometric distortions due to the lack of reference in repositioning the block grid. In this paper an RST-invariant block-based approach is proposed, aiming at protecting image objects. The term "image object" refers to semantically contiguous parts of images that have a specific contour boundary. The proposed approach is based on shape information, since the watermark is embedded in image blocks, the location and orientation of which are defined by Eulerian tours that are appropriately arranged in layers, around an object's robust skeleton. Images from the Polymathic project are used to illustrate the technique.
ISBN: 978-3-642-40778-9
978-3-642-40779-6
ISSN: 1611-3349
DOI: 10.1007/978-3-642-40779-6_21
URI: https://uniwacris.uniwa.gr/handle/3000/2860
Type: Conference Paper
Department: Department of Business Administration 
School: School of Administrative, Economics and Social Sciences 
Affiliation: University of West Attica (UNIWA) 
Appears in Collections:Book Chapter / Κεφάλαιο Βιβλίου

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