A semi-fragile watermarking algorithm for authenticating 2D engineering graphics based on log-polar transformation

Fei Peng, Re Si Guo, Chang Tsun Li, Min Long

Research output: Book chapter/Published conference paperChapter

Abstract

A semi-fragile watermarking algorithm for authenticating 2D engineering graphics based on log-polar coordinates mapping is proposed. Firstly, the coordinates of vertices of entities are mapped to the log-polar coordinate system to obtain the invariance of translation, scaling and rotation. Then the watermark is embedded in the mantissa of the real-valued log-polar coordinates via bit substitution. Theoretical analysis and experimental results show that the proposed algorithm is not only robust against incidental operations such as rotation, translation and scaling, but can also detect and locate malicious attacks such as entity modification, entity addition/deletion.

Original languageEnglish
Title of host publicationInformation Security and Digital Forensics - First International Conference, ISDF 2009, Revised Selected Papers
Pages11-18
Number of pages8
Volume41 LNICST
DOIs
Publication statusPublished - 2010
Event1st International Conference on Information Security and Digital Forensics, ISDF 2009 - London, United Kingdom
Duration: 07 Sep 200909 Sep 2009

Publication series

NameLecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering
Volume41 LNICST
ISSN (Print)1867-8211

Conference

Conference1st International Conference on Information Security and Digital Forensics, ISDF 2009
CountryUnited Kingdom
CityLondon
Period07/09/0909/09/09

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