@inproceedings{Sonnet:2003:IWF,
optnote = {},
author = {Henry Sonnet and Tobias Isenberg and Jana Dittmann and Thomas
Strothotte},
optkey = {},
optannote = {},
optseries = {},
editor = {Jon Rokne and Reinhard Klein and Wenping Wang},
url = {http://doi.ieeecomputersociety.org/10.1109/PCCGA.2003.1238249},
address = {Los Alamitos, CA},
localfile = {papers/Sonnet.2003.IWF.pdf},
publisher = {IEEE},
doi = {http://dx.doi.org/10.1109/PCCGA.2003.1238249},
optmonth = {},
organization = {IEEE Computer Society},
optcrossref = {},
booktitle = {Proceedings of the 11\textsuperscript{th} Pacific Conference on
Computer Graphics and Applications 2003 (PG 2003, October 8--10,
Canmore, Alberta, Canada)},
optvolume = {},
optnumber = {},
title = {{I}llustration {W}atermarks for {V}ector {G}raphics},
abstract = {Digital watermarking is a technique for embedding information into
data, such as images, 3D models, or audio files, such that some
properties (i. e., security, imperceptibility, robustness) are
maintained. While most of the existing watermarking techniques
focus on encoding copyright information where security is one of
the most important properties, we have developed algorithms for
embedding Illustration Watermarks, i. e., content-related
annotations for the image. Robustness against common media
transformations, high capacity, and blind detection are our
aspired properties while security and the usage of secure keys are
less important. The medium that we are using for embedding data
are 2D vector graphics. We introduce algorithms that change line
attributes, introduce new vertices in certain patterns, and
replace existing stroke segments by new lines in a stylistic way.
Based on the modification they introduce, we categorize our
techniques into whether they change the appearance of the image or
not and whether the changes are perceivable by the naked eye or
not. We demonstrate our techniques with silhouette lines obtained
from 3D models. Such line drawings are a very common style
utilized in many illustrations, in particular in the medical and
technical domain.},
year = {2003},
pages = {73--82},
}
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