Publications
2022
Chrysanthi, Angeliki; Katifori, Akrivi; Vrettakis, Ektor; Michalakis, Konstantinos; Petousi, Dimitra; Caridakis, George
Bringing Together and Pushing Apart Journal Article
In: 2022.
@article{chrysanthi2022bringing,
title = {Bringing Together and Pushing Apart},
author = {Angeliki Chrysanthi and Akrivi Katifori and Ektor Vrettakis and Konstantinos Michalakis and Dimitra Petousi and George Caridakis},
year = {2022},
date = {2022-01-01},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Moraitou, Efthymia; Konstantakis, Markos; Chrysanthi, Angeliki; Christodoulou, Yannis; Pavlidis, George; Caridakis, George
Supporting conservation and restoration through digital media modeling and exploitation-the example of the Acropolis of Ancient Tiryns Proceedings Article
In: 2022 17th International Workshop on Semantic and Social Media Adaptation & Personalization (SMAP), pp. 1–4, IEEE 2022.
@inproceedings{moraitou2022supporting,
title = {Supporting conservation and restoration through digital media modeling and exploitation-the example of the Acropolis of Ancient Tiryns},
author = {Efthymia Moraitou and Markos Konstantakis and Angeliki Chrysanthi and Yannis Christodoulou and George Pavlidis and George Caridakis},
year = {2022},
date = {2022-01-01},
booktitle = {2022 17th International Workshop on Semantic and Social Media Adaptation & Personalization (SMAP)},
pages = {1--4},
organization = {IEEE},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
2019
Katifori, Akrivi; Kourtis, Vasileios; Μποϊλέ, Μαρία; Pavlidis, George; Aliprantis, John; Michalakis, Konstantinos; Caridakis, George
Κέντρο ολοκληρωμένης ψηφιακής διαχείρισης πολιτισμικής κληρονομιάς CultKiosk: Μια ολοκληρωμένη προσέγγιση στα νησιά του Βορείου Αιγαίου Proceedings Article
In: 2019.
@inproceedings{inproceedingsb,
title = {Κέντρο ολοκληρωμένης ψηφιακής διαχείρισης πολιτισμικής κληρονομιάς CultKiosk: Μια ολοκληρωμένη προσέγγιση στα νησιά του Βορείου Αιγαίου},
author = {Akrivi Katifori and Vasileios Kourtis and Μαρία Μποϊλέ and George Pavlidis and John Aliprantis and Konstantinos Michalakis and George Caridakis},
year = {2019},
date = {2019-01-01},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
2009
Fotinea, Stavroula-Evita; Efthimiou, Eleni; Caridakis, George; Diamanti, O; Mitsiou, N; Tzafestas, Costas; Maragos, P
DIANOEMA: Visual analysis and sign recognition for GSL modelling and robot teleoperation Proceedings Article
In: Proc. of the 8th International Gesture Workshop, Bielefeld, Germany, 2009.
@inproceedings{Foetal2009,
title = {DIANOEMA: Visual analysis and sign recognition for GSL modelling and robot teleoperation},
author = {Stavroula-Evita Fotinea and Eleni Efthimiou and George Caridakis and O Diamanti and N Mitsiou and Costas Tzafestas and P Maragos},
url = {https://www.techfak.uni-bielefeld.de/ags/wbski/GW2009/page6/abstracts/FotineaEA.pdf},
year = {2009},
date = {2009-02-01},
booktitle = {Proc. of the 8th International Gesture Workshop},
address = {Bielefeld, Germany},
abstract = {Here we present research work performed in the framework of the Greek national project DIANOEMA (GSRT, M3.3, id 35), focusing on the following activities: i) Development of innovative image analysis and computer vision algorithms for the effective visual analysis of video sequences, aiming at sign detection and tracking; ii) Creation of a video-corpus of the Greek Sign Language (GSL) and annotation and modelling of an indicative subset of it; iii) Automatic recognition of indicative categories of GSL gestures using automatic computer vision systems pre-trained on the GSL corpus, and combining AI techniques, machine learning and probabilistic analysis for the estimation of gesture instantiations. iv) Integration of the above into a pilot application system of robot tele-operation, on the basis of a pre-defined vocabulary of simple signs for the tele-operation control.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Here we present research work performed in the framework of the Greek national project DIANOEMA (GSRT, M3.3, id 35), focusing on the following activities: i) Development of innovative image analysis and computer vision algorithms for the effective visual analysis of video sequences, aiming at sign detection and tracking; ii) Creation of a video-corpus of the Greek Sign Language (GSL) and annotation and modelling of an indicative subset of it; iii) Automatic recognition of indicative categories of GSL gestures using automatic computer vision systems pre-trained on the GSL corpus, and combining AI techniques, machine learning and probabilistic analysis for the estimation of gesture instantiations. iv) Integration of the above into a pilot application system of robot tele-operation, on the basis of a pre-defined vocabulary of simple signs for the tele-operation control.
2008
Fotinea, Stavroula-Evita; Efthimiou, Eleni; Karpouzis, K; Caridakis, George
A knowledge-based sign synthesis architecture Journal Article
In: Universal Access in the Information Society, vol. 6, no. 4, pp. 405-418, 2008, ISSN: 1615-5289.
@article{Fotinea:2008:KSS:1341586.1341593,
title = {A knowledge-based sign synthesis architecture},
author = {Stavroula-Evita Fotinea and Eleni Efthimiou and K Karpouzis and George Caridakis},
url = {http://portal.acm.org/citation.cfm?id=1341586.1341593},
doi = {10.1007/s10209-007-0094-8},
issn = {1615-5289},
year = {2008},
date = {2008-01-01},
journal = {Universal Access in the Information Society},
volume = {6},
number = {4},
pages = {405-418},
publisher = {Springer-Verlag},
address = {Berlin, Heidelberg},
abstract = {This paper presents the modules that comprise a knowledge-based sign synthesis architecture for Greek sign language (GSL). Such systems combine natural language (NL) knowledge, machine translation (MT) techniques and avatar technology in order to allow for dynamic generation of sign utterances. The NL knowledge of the system consists of a sign lexicon and a set of GSL structure rules, and is exploited in the context of typical natural language processing (NLP) procedures, which involve syntactic parsing of linguistic input as well as structure and lexicon mapping according to standard MT practices. The coding on linguistic strings which are relevant to GSL provide instructions for the motion of a virtual signer that performs the corresponding signing sequences. Dynamic synthesis of GSL linguistic units is achieved by mapping written Greek structures to GSL, based on a computational grammar of GSL and a lexicon that contains lemmas coded as features of GSL phonology. This approach allows for robust conversion of written Greek to GSL, which is an essential prerequisite for access to e-content by the community of native GSL signers. The developed system is sublanguage oriented and performs satisfactorily as regards its linguistic coverage, allowing for easy extensibility to other language domains. However, its overall performance is subject to current well known MT limitations.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This paper presents the modules that comprise a knowledge-based sign synthesis architecture for Greek sign language (GSL). Such systems combine natural language (NL) knowledge, machine translation (MT) techniques and avatar technology in order to allow for dynamic generation of sign utterances. The NL knowledge of the system consists of a sign lexicon and a set of GSL structure rules, and is exploited in the context of typical natural language processing (NLP) procedures, which involve syntactic parsing of linguistic input as well as structure and lexicon mapping according to standard MT practices. The coding on linguistic strings which are relevant to GSL provide instructions for the motion of a virtual signer that performs the corresponding signing sequences. Dynamic synthesis of GSL linguistic units is achieved by mapping written Greek structures to GSL, based on a computational grammar of GSL and a lexicon that contains lemmas coded as features of GSL phonology. This approach allows for robust conversion of written Greek to GSL, which is an essential prerequisite for access to e-content by the community of native GSL signers. The developed system is sublanguage oriented and performs satisfactorily as regards its linguistic coverage, allowing for easy extensibility to other language domains. However, its overall performance is subject to current well known MT limitations.