Identifying a steganographer in realistic and heterogeneous data sets
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F12%3A00200173" target="_blank" >RIV/68407700:21230/12:00200173 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1117/12.910565" target="_blank" >http://dx.doi.org/10.1117/12.910565</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1117/12.910565" target="_blank" >10.1117/12.910565</a>
Alternative languages
Result language
angličtina
Original language name
Identifying a steganographer in realistic and heterogeneous data sets
Original language description
We consider the problem of universal pooled steganalysis, in which we aim to identify a steganographer who sends many images (some of them innocent) in a network of many other innocent users. The detector must deal with multiple users and multiple imagesper user, and particularly the differences between cover sources used by different users. Despite being posed for five years, this problem has only previously been addressed by our 2011 paper. We extend our prior work in two ways. First, we present experiments in a new, highly realistic, domain: up to 4000 actors each transmitting up to 200 images, real-world data downloaded from a social networking site. Second, we replace hierarchical clustering by the method called local outlier factor (LOF), givinggreater accuracy of detection, and allowing a guilty actor sending moderate payloads to be detected, even amongst thousands of other actors sending hundreds of thousands of images.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
BB - Applied statistics, operational research
OECD FORD branch
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Result continuities
Project
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Continuities
V - Vyzkumna aktivita podporovana z jinych verejnych zdroju
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of SPIE, Volume 8303
ISBN
9780819489500
ISSN
0277-786X
e-ISSN
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Number of pages
13
Pages from-to
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Publisher name
Society of Photo-optical Instrumentation Engineers, SPIE - International Society for Optical Engineering
Place of publication
Pennsylvania State University. University Park,
Event location
San Francisco
Event date
Jan 22, 2012
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000301416400017