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Title: Watermark resynchronization: an efficient approach based on eulerian tours around a robust skeleton
Authors: Raftopoulos, Konstantinos
Ntalianis, Klimis S. 
Tzouveli, Paraskevi K. 
Tsapatsoulis, Nicolas 
Parker-Wood, Aleatha
Ferecatu, Marin
Keywords: Object-based watermarking;Resynchronization;Skeleton transform;Global-Local transformation;Eulerian tours
Category: Electrical Engineering - Electronic Engineering - Information Engineering
Field: Engineering and Technology
Issue Date: 2013
Publisher: Springer Berlin Heidelberg
Source: 14th Joint IFIP TC6 and TC11 Conference on Communications and Multimedia Security, 2013, Magdeburg, Germany, 25-26 September
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.
DOI: 10.1007/978-3-642-40779-6_21
Rights: IFIP International Federation for Information Processing
Type: Conference Papers
Appears in Collections:Δημοσιεύσεις σε συνέδρια/Conference papers

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