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Curriculum Vitae

Anastasios Tefas

Associate Professor, School of Informatics

Personal Information

- 2310991932
tefas@csd.auth.gr
http://poseidon.csd.auth.gr/LAB_PEOPLE/TTefas.php
Scopus ID6701672908
Google Scholar ID4stOS3YAAAAJ
Reasearcher IDF-1899-2010
OrcID IDorcid.org/0000-0003-1288-3667
Γνωστικό Αντικείμενο:
Υπολογιστική Νοημοσύνη
Επιστημονική Ειδίκευση:
- Θετικές επιστήμες, Μαθηματικά και Πληροφορική
- Πληροφορική
- Επιστήμη της πληροφορικής

Education

Προπτυχιακές Σπουδές

1997	Πτυχίο Πληροφορικής / ΣΘΕ ΑΠΘ Greece

Διδακτορικό Δίπλωμα

2002	PhD Πληροφορικής / ΣΘΕ ΑΠΘ Greece Υπολογιστική Νοημοσύνη

Course Work

Courses of Winter semester of 2016–17 academic year

	ΤΜΗΜΑ ΠΛΗΡΟΦΟΡΙΚΗΣ
NCO-03-02	NUMERICAL ANALYSIS
NDM-07-03	NEURAL NETWORKS

	ΜΕΤΑΠΤΥΧΙΑΚΟ ΤΜΗΜΑΤΟΣ ΠΛΗΡΟΦΟΡΙΚΗΣ
DM16	COMPUTATIONAL INTELLIGENCE - STATISTICAL LEARNING

	ΜΕΤΑΠΤΥΧΙΑΚΟ ΠΡΟΓΡΑΜΜΑ ΣΠΟΥΔΩΝ "ΔΙΑΔΙΚΤΥΟ ΚΑΙ ΠΑΓΚΟΣΜΙΟΣ ΙΣΤΟΣ"
IWW-01-21	COMPUTATIONAL INTELLIGENCE - STATISTICAL LEARNING

Courses of Spring semester of 2016–17 academic year

	ΤΜΗΜΑ ΠΛΗΡΟΦΟΡΙΚΗΣ
NDM-08-02	COMPUTATIONAL INTELLIGENCE

	ΜΕΤΑΠΤΥΧΙΑΚΟ ΠΡΟΓΡΑΜΜΑ ΣΠΟΥΔΩΝ "ΔΙΑΔΙΚΤΥΟ ΚΑΙ ΠΑΓΚΟΣΜΙΟΣ ΙΣΤΟΣ"
IWW-02-02	MULTIMEDIA CONTENT ANALYSIS, DESCRIPTION AND PROTECTION ON THE WEB

	ΜΕΤΑΠΤΥΧΙΑΚΟ ΤΜΗΜΑΤΟΣ ΠΛΗΡΟΦΟΡΙΚΗΣ
NDM18	MULTIMEDIA CONTENT ANALYSIS, DESCRIPTION AND PROTECTION ON THE WEB

Theses Supervised

Student Theses within AUTh

2016–2017

. Βαθειά συνελικτικά νευρωνικά δίκτυα για ανάκτηση εικόνων με βάση το περιεχόμενο
. Προστασία προσωπικών δεδομένων σε εικονοσειρές
. Μαθαίνοντας την διάδραση με δεδομένα υψηλών διαστάσεων
. Ανάλυση και περιγραφή οπτικής πληροφορίας με χρήση συνελικτικών νευρωνικών δικτύων και νεύρωνες μνήμης

2015–2016

. Πολύτροπη μείωση διάστασης δεδομένων με χρήση πυρήνα
. Ανίχνευση Προσώπου Με Βαθιά Συνελικτικά Νευρωνικά Δίκτυα
. Ανάκτηση Εικόνας Βασισμένη σε Βαθιά Συνελικτικά Νευρωνικά Δίκτυα
. Αρχιτεκτονικές και Εκπαίδευση Βαθιών Νευρωνικών Δικτύων
. Ανίχνευση και ταξινόμηση λογότυπων σε μεγάλες οπτικές ροές βασισμένη σε συνελιτκικά νευρωνικά δίκτυα

2014–2015

. ΝΕΥΡΩΝΙΚΑ ΔΙΚΤΥΑ ΒΑΘΕΙΑΣ ΜΑΘΗΣΗΣ ΓΙΑ ΑΝΑΛΥΣΗ ΨΗΦΙΑΚΩΝ ΜΕΣΩΝ
. ΑΝΑΚΥΨΗ ΘΕΜΕΛΙΩΔΟΥΣ ΔΟΜΗΣ ΠΛΗΡΟΦΟΡΙΑΣ ΑΠΟ ΠΟΡΝΟΓΡΑΦΙΚΕΣ ΕΙΚΟΝΕΣ ΜΕ ΧΡΗΣΗ ΒΑΘΙΩΝ ΝΕΥΡΩΝΙΚΩΝ ΑΡΧΙΤΕΚΤΟΝΙΚΩΝ
. ΠΑΡΑΓΩΓΗ ΓΕΛΟΙΟΓΡΑΦΙΑΣ ΜΕ ΧΡΗΣΗ ΑΜΕΡΟΛΗΠΤΩΝ ΣΥΝΑΡΤΗΣΕΩΝ ΠΑΡΑΜΟΡΦΩΣΗΣ
. ΑΛΓΟΡΙΘΜΟΙ ΒΑΘΕΙΑΣ ΜΑΘΗΣΗΣ ΓΙΑ ΔΙΑΚΡΙΤΙΚΗ ΑΥΤΟΚΩΔΙΚΟΠΟΙΗΣΗ
. ΤΕΧΝΙΚΕΣ ΟΜΑΔΟΠΟΙΗΣΗΣ ΜΕ ΧΡΗΣΗ ΝΕΥΡΩΝΙΚΩΝ ΔΙΚΤΥΩΝ ΑΥΤΟΚΩΔΙΚΟΠΟΙΗΣΗΣ

In progress

. Υπολογιστική νοημοσύνη
. Τεχνικές Υπολογιστικής Νοημοσύνης στα Ψηφιακά Μέσα
. Τεχνικές Βαθιάς Μάθησης στα Ψηφιακά Μέσα
. Βαθιά φασματικά δίκτυα

2013–2014

. ΓΕΝΕΤΙΚΟΙ ΑΛΓΟΡΙΘΜΟΙ ΣΤΗ ΒΕΛΤΙΣΤΟΠΟΙΗΣΗ ΓΡΑΦΗΜΑΤΩΝ ΟΜΟΙΟΤΗΤΑΣ ΓΙΑ ΠΡΟΒΛΗΜΑΤΑ ΟΜΑΔΟΠΟΙΗΣΗΣ ΔΕΔΟΜΕΝΩΝ
. ΕΦΑΡΜΟΓΕΣ ΤΥΧΑΙΩΝ ΠΕΡΙΠΑΤΩΝ ΣΤΗΝ ΚΑΤΗΓΟΡΙΟΠΟΙΗΣΗ ΚΑΙ ΣΤΗΝ ΜΕΙΩΣΗ ΔΙΑΣΤΑΣΗΣ ΔΕΔΟΜΕΝΩΝ

2012–2013

. ΤΕΧΝΙΚΕΣ ΥΠΟΛΟΓΙΣΤΙΚΗΣ ΝΟΗΜΟΣΥΝΗΣ ΣΕ ΠΑΙΧΝΙΔΙΑ ΣΤΡΑΤΗΓΙΚΗΣ ΠΡΑΓΜΑΤΙΚΟΥ ΧΡΟΝΟΥ
. ΧΡΗΣΗ ΤΗΣ ΦΑΣΜΑΤΙΚΗΣ ΟΜΑΔΟΠΟΙΗΣΗΣ ΣΤΗΝ ΤΕΧΝΙΚΗ ΕΚΤΙΜΗΣΗΣ ΚΟΣΤΟΥΣ ΜΕ ΑΝΑΛΟΓΙΕΣ
. ΜΕΙΩΣΗ ΔΙΑΣΤΑΣΗΣ ΔΕΔΟΜΕΝΩΝ ΠΟΛΛΑΠΛΩΝ ΕΤΙΚΕΤΩΝ ΜΕ ΧΡΗΣΗ ΥΠΟΚΛΑΣΕΩΝ
. ΤΕΧΝΙΚΕΣ ΥΠΟΛΟΓΙΣΤΙΚΗΣ ΝΟΗΜΟΣΥΝΗΣ ΣΤΗΝ ΤΑΞΙΝΟΜΗΣΗ ΕΙΚΟΝΩΝ
. ΤΕΧΝΙΚΕΣ ΥΠΟΧΟΡΩΝ ΜΕ ΧΡΗΣΗ ΛΑΠΛΑΣΙΑΝΗΣ ΔΙΑΚΡΙΤΙΚΗΣ ΑΝΑΛΥΣΗΣ ΕΔΡΑΙΩΝ ΔΙΑΝΥΣΜΑΤΩΝ

2011–2012

. ΜΑΘΗΣΗ ΥΠΟΧΩΡΩΝ ΜΕ ΠΕΡΙΟΡΙΣΜΟΥΣ ΣΥΜΜΕΤΡΙΑΣ
. ΜΗΧΑΝΕΣ ΕΔΡΑΙΩΝ ΔΙΑΝΥΣΜΑΤΩΝ ΜΕ ΕΝΘΕΣΗ ΓΡΑΦΟΥ
. ΑΝΑΛΥΣΗ ΔΙΑΚΡΙΤΙΚΗΣ ΙΚΑΝΟΤΗΤΑΣ ΜΕΣΩ ΒΕΛΤΙΣΤΟΠΟΙΗΣΗΣ ΚΡΙΤΗΡΙΩΝ ΤΕΤΡΑΓΩΝΙΚΗΣ ΑΜΟΙΒΑΙΑΣ ΠΛΗΡΟΦΟΡΙΑΣ

2010–2011

. ΤΕΧΝΙΚΕΣ ΝΟΗΜΟΣΥΝΗΣ ΠΛΗΘΥΣΜΩΝ ΚΑΙ ΠΟΛΥΚΡΙΤΗΡΙΑΚΗ ΒΕΛΤΙΣΤΟΠΟΙΗΣΗ ΣΕ ΠΟΛΥΜΕΣΙΚΕΣ ΕΦΑΡΜΟΓΕΣ
. Εμβύθιση Γράφων με Χρήση Υποκλάσεων στην Κατηγοριοποίηση Δεδομένων.
. ΔΙΑΚΡΙΤΙΚΗ ΑΝΑΛΥΣΗ ΕΔΡΑΙΩΝ ΔΙΑΝΥΣΜΑΤΩΝ ΕΛΑΧΙΣΤΗΣ ΔΙΑΚΥΜΑΝΣΗΣ ΚΛΑΣΗΣ
. Μηχανή εδραίων διανυσμάτων με χρήση υποκλάσεων.

2009–2010

. ΤΕΧΝΙΚΕΣ ΣΤΑΤΙΣΤΙΚΗΣ ΜΑΘΗΣΗΣ ΥΠΟΚΛΑΣΕΩΝ ΜΕ ΧΡΗΣΗ ΝΟΗΜΟΣΥΝΗΣ ΠΛΗΘΥΣΜΩΝ
. ΤΕΧΝΙΚΕΣ ΣΤΑΤΙΣΤΙΚΗΣ ΜΑΘΗΣΗΣ ΥΠΟΚΛΑΣΕΩΝ ΜΕ ΧΡΗΣΗ ΝΟΗΜΟΣΥΝΗΣ ΠΛΗΘΥΣΜΩΝ
. Τεχνικές Υπολογιστικής Νοημοσύνης σε παιχνίδια μάχης πρώτου προσώπου.
. ΤΕΧΝΙΚΕΣ ΝΟΗΜΟΣΥΝΗΣ ΠΛΗΘΥΣΜΩΝ ΚΑΙ ΠΟΛΥΚΤΙΤΗΡΙΑΚΗ ΒΕΛΤΙΣΤΟΠΟΙΗΣΗ ΣΤΑ ΨΗΦΙΑΚΑ ΜΕΣΑ
. Τεχνικές στατιστηκής μάθησης με χρήση υποκλάσεων στην κατηγοριοποίηση δεδομένων.

Connection to Society

Ερευνητικές Υποδομές

Αριθμός επιστημονικών / καλλιτεχνικών εργαστηρίων που χρησιμoποιείτε εντός ιδρύματος: 2

Πως αξιολογείτε την επάρκεια, καταλληλότητα και ποιότητα των χώρων των εργαστηρίων;: Negative

Πως αξιολογείτε την επάρκεια, καταλληλότητα και ποιότητα του εργαστηριακού εξοπλισμού;: Durchschnitt

Καλύπτουν οι διαθέσιμες υποδομές τις ανάγκες της ερευνητικής διαδικασίας;: Partially

Πόσα ερευνητικά σας αντικείμενα δεν καλύπτονται από τις διαθέσιμες υποδομές;: Keine

Πόσο εντατική χρήση γίνεται των ερευνητικών υποδομών;: Maximum

Πόσο συχνά ανανεώνονται οι ερευνητικές υποδομές;: 5

Ποια είναι η ηλικία του υπάρχοντος εξοπλισμού: 4

Ποια είναι η λειτουργική κατάσταση του υπάρχοντος εξοπλισμού;: Durchschnitt

Υπάρχει ανάγκη ανανέωσης/επικαιροποίησης του υπάρχοντος εξοπλισμού;: Great

Πώς χρηματοδοτείται η προμήθεια και ανανέωση των ερευνητικών υποδομών;:

Τακτικό προϋπολογισμό
Ερευνητικά προγράμματα
Προσωπικές δαπάνες μελών ΔΕΠ

Πώς χρηματοδοτείται η συντήρηση των ερευνητικών υποδομών;:

Τακτικό προϋπολογισμό
Ερευνητικά προγράμματα
Προσωπικές δαπάνες μελών ΔΕΠ

Publications

2015

Iosifidis A, Tefas Anastasios, Pitas Ioannis (2015). Graph Embedded Extreme Learning Machine. IEEE Transactions on Cybernetics. vol. PP no. 99 pp. 1.
Iosifidis A, Tefas Anastasios, Pitas Ioannis (2015). Class-specific Reference Discriminant Analysis with application in Human Behaviour Analysis. IEEE Transactions on Human Machine Systems.
Iosifidis A, Tefas Anastasios, Pitas Ioannis (2015). On the Kernel Extreme Learning Machine Classifier. Pattern Recognition Letters. vol.54 p.11-17.
Iosifidis A, Marami E, Tefas Anastasios, Pitas Ioannis, Lyroudia Kleoniki (2015). The MOBISERV-AIIA Eating and Drinking multi-view database for vision-based assisted living. Journal of Information Hiding and Multimedia Signal Processing. vol.6 no.2 p. 254-273.
Iosifidis A, Tefas Anastasios, Pitas Ioannis (2015). Distance-based Human Action Recognition using optimized class representations. Neurocomputing. vol. 161 pp.47–55.
Iosifidis Alexandros, Tefas Anastasios, Pitas Ioannis (2015). DropELM: Fast neural network regularization with Dropout and DropConnect. Neurocomputing. vol.162 p.57-66.
Iosifidis Alexandros, Tefas Anastasios, Pitas Ioannis (2015). Class-Specific Reference Discriminant Analysis With Application in Human Behavior Analysis. IEEE Transactions on Human-Machine Systems. Vol. 45 no. 3 p.315-326.
Orphanidis G, Tefas Anastasios, Nikolaidis Nikolaos, Pitas Ioannis (2015). Facial image clustering in stereoscopic videos using double spectral analysis. Signal Processing: Image Communication. vol. 33 pp. 86–105.
Tsapanos Nikolaos, Tefas Anastasios, Nikolaidis Nikolaos, Pitas Ioannis (2015). A distributed framework for trimmed Kernel k-Means clustering. Pattern Recognition. Vol. 48 no. 8 p.2685-2698.
Iosifidis Alexandros , Tefas Anastasios, Pitas Ioannis (2015). Enhancing ELM-based facial image classification by exploiting multiple facial views. International Conference on Computational Science (ICCS 2015). Reykjavík - Iceland.
Tsapanos Nikolaos, Tefas Anastasios, Nikolaidis Nikolaos, Iosifidis A, Pitas Ioannis (2015). Fast Kernel Matrix Computation for Big Data Clustering. International Conference On Computational Science, ICCS 2015 — Procedia Computer Science. International Conference on Computational Science (ICCS 2015). Reykjavík - Iceland. vol.51 p. 2445–2452.

2014

Iosifidis A, Tefas Anastasios, Pitas Ioannis (2014). Regularized Extreme Learning Machine for Multi-view Semi-supervised Action Recognition. Neurocomputing. vol.145 pp. 250-262.
Iosifidis A, Tefas Anastasios, Pitas Ioannis (2014). Kernel Reference Discriminant Analysis. Pattern Recognition Letters. vol.49 no. 1 p. 85-91.
Iosifidis Alexandros, Tefas Anastasios, Pitas Ioannis (2014). Discriminant Bag of Words based Representation for Human Action Recognition. Pattern Recognition Letters. vol.49 p.185-192.
Nikitidis S, Tefas Anastasios, Pitas Ioannis (2014). Maximum Margin Projection Subspace Learning for Visual Data Analysis. IEEE Transactions on Image Processing. vol.23 no.10 p. 4413 - 4425.
Nikitidis S, Tefas Anastasios, Pitas Ioannis (2014). Projected Gradients for Subclass Discriminant Nonnegative Subspace Learning. IEEE Transactions on Cybernetics. vol.44 no.12 p.2806 - 2819.
Papachristou K, Tefas Anastasios, Pitas Ioannis (2014). Symmetric Subspace Learning for Image Analysis. IEEE Transactions on Image Processing. vol.23 no.12 p.5683-5697.
Zoidi O, Tefas Anastasios, Nikolaidis Nikolaos, Pitas Ioannis (2014). Person identity label propagation in stereo videos. IEEE Transactions on Multimedia. vol.16, issue 5 p.1358-1368.
Zoidi O, Nikolaidis Nikolaos, Tefas Anastasios, Pitas Ioannis (2014). Stereo Object Tracking with Fusion of Texture, Color and Disparity Information. Signal Processing: Image Communication. vol.29 Issue 5 p.573-589.
Alexandros Iosifidis, Tefas Anastasios, Pitas Ioannis (2014). Multi-view Regularized Extreme Learning Machine for Human Action Recognition. Artificial Intelligence: Methods and Applications 8th Hellenic Conference on AI, SETN 2014, Ioannina, Greece, May, 15-17, 2014, Proceedings. 8th Hellenic Conference on AI, SETN 2014. Ioannina - Greece.
Chriskos P, Zoidi O, Tefas Anastasios, Pitas Ioannis (2014). De-identifying facial images using singular value decomposition. 2014 37th International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO). 2014 37th International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO). Opatija, Croatia. IEEE. p.1240-1245.
Iosifidis Alexandros, Tefas Anastasios, Pitas Ioannis (2014). Exploiting Local Class Information in Extreme Learning Machine. International Conference on Neural Computation Theory and Applications (NCTA 2014). Rome - Italy.
Iosifidis A, Tefas Anastasios, Nikolaidis Nikolaos, Pitas Ioannis (2014). Human action recognition in stereoscopic videos based on bag of features and disparity pyramids. Proceedings of the 22nd European Signal Processing Conference (EUSIPCO), 2014. 22nd European Signal Processing Conference (EUSIPCO). Lisbon - Portugal. p.1317 - 1321.
Iosifidis Alexandros, Tefas Anastasios, Pitas Ioannis (2014). Minimum Variance Extreme Learning Machine for human action recognition. 2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). ICASSP 2014 - 2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). Florence, Italy. IEEE. p.5427-5431.
Iosifidis Alexandros, Tefas Anastasios, Pitas Ioannis (2014). Human action recognition based on bag of features and multi-view neural networks. 2014 IEEE International Conference on Image Processing (ICIP). 2014 IEEE International Conference on Image Processing (ICIP). Paris, France. IEEE. p.1510-1514.
Iosifidis Alexandros, Tefas Anastasios, Pitas Ioannis (2014). Semi-supervised Classification of Human Actions Based on Neural Networks. 2014 22nd International Conference on Pattern Recognition. 2014 22nd International Conference on Pattern Recognition (ICPR). Stockholm, Sweden. IEEE. p.1336-1341.
Ivasic-Kos M, Iosifidis A, Tefas Anastasios, Pitas Ioannis (2014). Person de-identification in activity videos. 2014 37th International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO). 2014 37th International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO). Opatija, Croatia. IEEE. p.1294-1299.
Kourous Nikolaos, Iosifidis Alexandros, Tefas Anastasios, Nikolaidis Nikolaos, Pitas Ioannis (2014). Video characterization based on activity clustering. 8th International Conference on Electrical and Computer Engineering. 2014 8th International Conference on Electrical and Computer Engineering (ICECE). Dhaka, Bangladesh. IEEE. p.266-269.
Mademlis Ioannis, Iosifidis Alexandros, Tefas Anastasios, Nikolaidis Nikolaos, Pitas Ioannis (2014). Stereoscopic video description for human action recognition. 2014 IEEE Symposium on Computational Intelligence for Multimedia, Signal and Vision Processing (CIMSIVP). 2014 IEEE Symposium on Computational Intelligence for Multimedia, Signal and Vision Processing (CIMSIVP). Orlando, FL, USA. IEEE. p.1-6.
Mygdalis Vasileios, Iosifidis Alexandros, Tefas Anastasios, Pitas Ioannis (2014). Video summarization based on Subclass Support Vector Data Description. 2014 IEEE Symposium on Computational Intelligence for Engineering Solutions (CIES). 2014 IEEE Symposium on Computational Intelligence for Engineering Solutions (CIES). Orlando, FL, USA. IEEE. p.183-187.
Orfanidis G, Tefas Anastasios, Nikolaidis Nikolaos, Pitas Ioannis (2014). Facial image clustering in stereo videos using local binary patterns and double spectral analysis . Proceedings of the IEEE Symposium on Computational Intelligence and Data Mining (CIDM), 2014. IEEE Symposium on Computational Intelligence and Data Mining (CIDM), 2014 . Orlando, - Florida. p.217 - 221.
Orfanidis Georgios, Nikolaidis Nikolaos, Tefas Anastasios, Pitas Ioannis (2014). Stereo facial image clustering using double spectral analysis. 8th International Conference on Electrical and Computer Engineering. 2014 8th International Conference on Electrical and Computer Engineering (ICECE). Dhaka, Bangladesh. IEEE. p.262-265.
Papachristou Konstantinos, Τέφας Αναστάσιος, Νικολαϊδης Νικόλαος, Πήτας Ιωάννης (2014). Stereoscopic video shot clustering into semantic concepts based on visual and disparity information. 2014 IEEE International Conference on Image Processing (ICIP). 2014 IEEE International Conference on Image Processing (ICIP). Paris, France. IEEE. p.5472-5476.
Papachristou Konstantinos, Τέφας Αναστάσιος, Nikolaidis Nikos, Πήτας Ιωάννης (2014). Stereoscopic video shot classification based on Weighted Linear Discriminant Analysis. 2014 IEEE International Workshop on Machine Learning for Signal Processing (MLSP). 2014 IEEE 24th International Workshop on Machine Learning for Signal Processing (MLSP). Reims, France. IEEE. p.1-6.
Tsapanos Theodoros, Tefas Anastasios, Nikolaidis Nikolaos, Pitas Ioannis (2014). Large graph clustering using DCT-based graph clustering. 2014 IEEE Symposium on Computational Intelligence in Big Data (CIBD). 2014 IEEE Symposium on Computational Intelligence in Big Data (CIBD). Orlando, FL, USA. IEEE. p.1-4.
Tsingalis Ioannis, Τέφας Αναστάσιος, Νικολαϊδης Νικόλαος, Πήτας Ιωάννης (2014). Shot type characterization in 2D and 3D video content. IEEE 16th International Workshop on Multimedia Signal Processing (MMSP). 2014 IEEE 16th International Workshop on Multimedia Signal Processing (MMSP). Jakarta, Indonesia. IEEE. p.1-5.
Zoidi O, Tefas Anastasios, Nikolaidis Nikolaos, Pitas Ioannis (2014). Iterative Label Propagation on facial images. Proceedings of the 22nd European Signal Processing Conference (EUSIPCO), 2014. 22nd European Signal Processing Conference (EUSIPCO), 2014 . Lisbon - Portugal. p.1222 - 1226.

2013

Iosifidis Alexandros, Tefas Anastasios, Pitas Ioannis (2013). Learning sparse representations for view-independent human action recognition based on fuzzy distances. Neurocomputing. vol.121 p.344–353.
Iosifidis Alexandros, Tefas Anastasios, Pitas Ioannis (2013). Dynamic action recognition based on dynemes and Extreme Learning Machine. Pattern Recognition Letters. vol.34 no.15 p.1890–1898.
Iosifidis Alexandros, Tefas Anastasios, Pitas Ioannis (2013). Multi-view action recognition based on action volumes, fuzzy distances and cluster discriminant analysis. Signal Processing. vol.93 no.6 p.1445–1457.
Iosifidis Alexandros, Tefas Anastasios, Pitas Ioannis (2013). Minimum Class Variance Extreme Learning Machine for Human Action Recognition. IEEE Transactions on Circuits & Systems for Video Technology. vol.23 no.11 p.1968 - 1979.
Iosifidis Alexandros, Tefas Anastasios, Pitas Ioannis (2013). Multidimensional Sequence Classification Based on Fuzzy Distances and Discriminant Analysis. IEEE Transactions on Knowledge & Data Engineering. vol.25 no.11 p.2564-2575.
Iosifidis Alexandros, Tefas Anastasios, Pitas Ioannis (2013). On the Optimal Class Representation in Linear Discriminant Analysis. IEEE Transactions on Neural Networks & Learning Systems. vol.24 no.9 p.1491 - 1497.
Vretos Nicholas, Tefas Anastasios, Pitas Ioannis (2013). Using robust dispersion estimation in support vector machines. Pattern Recognition. vol.46 no.12 p.3441–3451.
Zoidi Olga, Tefas Anastasios, Pitas Ioannis (2013). Visual Object Tracking Based on Local Steering Kernels and Color Histograms. IEEE Transactions on Circuits & Systems for Video Technology. vol.23 no.5 p.870 - 882.
Zoidi Olga, Tefas Anastasios, Pitas Ioannis (2013). Multiplicative Update Rules for Concurrent Nonnegative Matrix Factorization and Maximum Margin Classification. IEEE Transactions on Neural Networks & Learning Systems. vol.24 no.3 p.422 - 434.
Iosifidis A, Tefas Anastasios, Pitas Ioannis (2013). Person Identification from Actions based on Dynemes and Discriminant Learning. 2013 International Workshop on Biometrics and Forensics (IWBF). IEEE International Workshop on Biometrics and Forensics (IWBF). Lisbon - Portugal.
Iosifidis A, Tefas Anastasios, Pitas Ioannis (2013). View-independent Human Action Recognition based on Multi-view Action Images and Discriminant Learning. 2013 IEEE 11th IVMSP Workshop. 11th IEEE IVMSP Workshop Image, Video and Multidimensional Signal Processing: 3D Image/Video Technologies and Applications. Seoul - Korea.
Iosifidis A, Tefas Anastasios, Pitas Ioannis (2013). Representative Class Vector Clustering based Discriminant Analysis. 2013 Ninth International Conference on Intelligent Information Hiding and Multimedia Signal Processing. 9th IEEE International Conference on Intelligent Information Hiding and Multimedia Signal Processing. Beijing - China. p. 526 - 529.
Iosifidis A, Tefas Anastasios, Pitas Ioannis (2013). Multi-view human action recognition: a survey. 2013 Ninth International Conference on Intelligent Information Hiding and Multimedia Signal Processing. The 9th International Conference on Intelligent Information Hiding and Multimedia Signal Processing (IEEE). Beijing - China. p. 522 - 525.
Iosifidis A, Tefas Anastasios, Pitas Ioannis (2013). Dynamic Action Classification based on Iterative Data Selection and Feedforward Neural Networks. 2013 Proceedings of the 21st European Signal Processing Conference (EUSIPCO). 21st European Signal Processing Conference. Marrakech - Morocco. p. 1 - 5.
Iosifidis Alexandros, Tefas Anastasios, Pitas Ioannis (2013). Person identification from actions based on Artificial Neural Networks. 2013 IEEE Workshop on Computational Intelligence in Biometrics and Identity Management (IEEE SSCI 2013). Singapore.
Iosifidis Alexandros, Tefas Anastasios, Pitas Ioannis (2013). Active classification for human action recognition. IEEE International Conference on Image Processing. Melbourne - Australia. p.3249 - 3253.
Kapsouras Ioannis, Karanikolos Stylianos, Nikolaidis Nikolaos, Tefas Anastasios (2013). Folk dance recognition using a bag of words approach and ISA/STIP features. 6th Balkan Conference in Informatics (BCI 2013). Thessaloniki - Greece.
Kapsouras Ioannis, Karanikolos Stylianos, Nikolaidis Nikolaos, Tefas Anastasios (2013). Feature Comparison and Feature Fusion for Traditional Dances Recognition. Engineering Applications of Neural Networks 14th International Conference, EANN 2013, Halkidiki, Greece. 14th Engineering Applications of Neural Networks (EANN 2013). Halkidiki - Greece. Series "Communications in Computer and Information Science", Vol. 383.
Nikitidis S, Tefas Anastasios, Pitas Ioannis (2013). Maximum Margin Discriminant Projections for Facial Expression Recognition. 2013 Proceedings of the 21st European Signal Processing Conference (EUSIPCO),. 21st European Signal Processing Conference, Marrakech, Morocco (EUSIPCO 2013). Marrakech - Morocco. p. 1 - 5.
Oikonomou M, Tefas Anastasios (2013). Direct Multi-label Linear Discriminant Analysis. 14th EANN Conference. Chalkidiki - Greece.
Tefas Anastasios, Iosifidis Alexandros, Pitas Ioannis (2013). Neural Networks for Digital Media Analysis and Description. Engineering Applications of Neural Networks: 14th International Conference, EANN 2013, Halkidiki, Greece, September 2013, Proceedings, Part I. 14th International Conference, Engineering Applications of Neural Networks. Iliadis, Lazaros S., Papadopoulos, Harris, Jayne, Chrisina (Eds.). Chalkidiki - Greece. p.1-11.
Zoidi Olga, Tefas Anastasios, Pitas Ioannis (2013). Exploiting Discriminant and SVM Constraints in NMF. 2013 Proceedings of the 21st European Signal Processing Conference (EUSIPCO). 21st European Signal Processing Conference. Marrakech - Morocco.
Zoidi Olga, Tefas Anastasios, Pitas Ioannis (2013). Exploiting the SVM constraints in NMF with application in eating and drinking activity recognition. IEEE International Conference on Image Processing. Melbourne - Australia. p.3765 - 3769.

2012

Iosifidis A, Tefas Anastasios, Pitas Ioannis (2012). View-invariant action recognition based on Artificial Neural Networks. IEEE Transactions on Neural Networks and Learning Systems. vol.23 no.3 p.412-424.
Iosifidis A, Tefas Anastasios, Pitas Ioannis (2012). Activity based Person Identification using Fuzzy Representation and Discriminant Learning. IEEE Transactions in Information Forensics and Security. vol.7 no.2 p.530-542.
Iosifidis A, Tefas Anastasios, Nikolaidis Nikolaos, Pitas Ioannis (2012). Multi-view human movement recognition based on Fuzzy distances and Linear Discriminant Analysis. Computer Vision and Image Understanding. vol.116 no.3 p.347-360.
Nikitidis S, Tefas Anastasios, Nikolaidis Nikolaos, Pitas Ioannis (2012). Subclass Discriminant Non negative Matrix Factorization for Facial Image Analysis. Pattern Recognition. vol.45 no.12 p.4080-4091.
Tsapanos N, Tefas Anastasios, Nikolaidis Nikolaos, Pitas Ioannis (2012). Shape Matching Using a Binary Search Tree Structure of Weak Classifiers. Pattern Recognition. vol.45 no.6 p.2363-2376.
Arvanitidis G, Tefas A (2012). Exploiting Graph Embedding In Support Vector Machines. IEEE International Workshop on Machine Learning for Signal Processing. Santander, Spain.
Athanasiadis C, Galanopoulos D, Tefas Anastasios (2012). Progressive Neural Network Training For The Open Racing Car Simulato. IEEE Conference on Computational Intelligence and Games (IEEE IG 2012). Granada - Spain. p.116-123.
Athanasiadis C, Galanopoulos D, Tefas A (2012). Progressive Neural Network Training For The Open Racing Car Simulator. IEEE Conference on Computational Intelligence and Games. Granada, Spain.
Galanopoulos D, Athanasiadis C, Tefas A (2012). Evolutionary Optimization of a Neural Network Controller for Car Racing Simulation. 7th Hellenic Conference on Artificial Intelligence. Lamia, Greece.
Gavriilidis V, Tefas A (2012). Exploiting Quadratic Mutual Information for Discriminant analysis. 7th Hellenic Conference on Artificial Intelligence. Lamia, Greece.
Iosifidis A, Tefas Anastasios, Pitas Ioannis (2012). Neural representation and learning for multi-view human action recognition. The 2012 International Joint Conference on Neural Networks (IJCNN). 2012 International Joint Conference on Neural Networks (IJCNN). Brisbane, Australia. p. 1 - 6.
Iosifidis A, Tefas Anastasios, Pitas Ioannis (2012). Multi-view Human Action Recognition Under Occlusion Based on Fuzzy Distances and Neural Networks. Proceedings of the 20th European Signal Processing Conference (2012). 20th European Signal Processing Conference (2012). Bucharest, Romania. p. 1129 - 1133.
Iosifidis A, Tefas Anastasios, Pitas Ioannis (2012). Discriminant Action Representation for View-Invariant Person Identification. IEEE 2012 19th International Conference on Image Processing. 19th International Conference on Image Processing. Orlando, Florida. p. 1177 - 1180.
Iosifidis A, Tefas Anastasios, Pitas Ioannis (2012). Action based Person Identification based on Self Organizing Map and Extreme Learning Machine. 9th Workshop on Self-Organizing Maps. 9th Workshop on Self-Organizing Maps. Santiago, Chile.
Iosifidis A, Marami E, Tefas Anastasios, Pitas Ioannis (2012). Eating and drinking activity recognition based on discriminant analysis of fuzzy distances and activity volumes. IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2012). (ICASSP2012) International Conference on Acoustics, Speech, and Signal Processing. Kyoto, Japan.
Orfanidis G, Tefas A (2012). Exploiting Subclass Information in Support Vector Machines. 21st International Conference on Pattern Recognition. Tsukuba Science City, Japan.
Pitelis N, Tefas A (2012). Discriminant Subspace Learning Based on Support Vectors Machines. 8th International Conference on Machine Learning and Data Mining, MLDM 2012. Berlin, Germany.
Vretos N, Tefas Anastasios, Pitas Ioannis (2012). Facial Expression Recognition With Robust Covariance Estimation And Support Vector Machines. 2012 IEEE International Workshop on Machine Learning for Signal Processing. 2012 IEEE International Workshop on Machine Learning for Signal Processing. Santander, Spain. p. 1 - 5.
Zoidi O, Tefas Anastasios, Pitas Ioannis (2012). Visual Object Tracking via Gabor-based Salient Features Extraction. 2012 Proceeding of the 20th European Signal Processing Conference. 20th European Signal Processing Conference. Bucharest, Romania. p. 1925 - 1929.
Zoidi O, Tefas Anastasios, Pitas Ioannis (2012). Visual Object Tracking Based on the Object's Salient Features with Application in Automatic Nutrition Assistance. 2012 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP). 2012 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP). Kyoto, Japan. p. 1469 - 1472.

2011

Maronidis A, Bolis D, Tefas Anastasios, Pitas Ioannis (2011). Improving Subspace Learning for Facial Expression Recognition Using Person Dependent and Geometrically Enriched Training Sets. Neural Networks. vol.24 no.8 p.814-823.
Bouzas D, Arvanitopoulos N, Tefas A (2011). Optimizing Linear Discriminant Error Correcting Output Codes Using Particle Swarm Optimization. Proceedings 21st International Conference on Artificial Neural Networks (ICANN’2011). Espoo, Finland.
Iosifidis A, Tefas Anastasios, Pitas Ioannis (2011). Person Specific Activity Recognition using Fuzzy Distances and Discriminant Analysis. Proceedings of the 19th European Signal Processing Conference (EUSIPCO’2011). EUSIPCO 2011: 19th European Signal Processing Conference. Barcelona, Spain.
Iosifidis A, Tefas Anastasios, Nikolaidis Nikolaos, Pitas Ioannis (2011). Learning Human Identity Using View-Invariant Multi-view Movement Representation. Biometrics and ID Management COST 2101 European Workshop, BioID 2011, Brandenburg (Havel), March 8-10, 2011, Proceedings. Biometrics and ID Management - COST 2101 European Workshop. Brandenburg, Germany. p. 217-226.
Kyperountas M, Tefas Anastasios, Pitas Ioannis (2011). Entropy-Based Iterative Face Classification. Biometrics and ID Management : COST 2101 European Workshop, BioID 2011. Proceedings. Biometrics and ID Management : COST 2101 European Workshop, BioID 2011. Brandenburg, Germany. Vol. 6583.
Marami E, Tefas Anastasios, Pitas Ioannis (2011). Nutrition Assistance based on Skin Color Segmentation and Support Vector Machines. Proceedings of the International Conference on Man-Machine Interactions (ICMMI’2011). ICMMI 2011 : International Conference on Man-Machine Interactions 2011. Beskids, Poland.
Nikitidis S, Tefas Anastasios, Pitas Ioannis (2011). Using Subclasses in Discriminant Non-negative Subspace Learning for Facial Expression Recognition. Proceedings 19th European Signal Processing Conference (EUSIPCO’2011). 19th European Signal Processing Conference (EUSIPCO’2011). Barcelona, Spain.
Nikitidis S, Tefas Anastasios, Pitas Ioannis (2011). Recent Advances in Discriminant Non-negative Matrix Factorization. 2011 First Asian Conference on Pattern Recognition (ACPR). 2011 First Asian Conference on Pattern Recognition (ACPR 2011). Beijing, China. p. 1 - 6.
Nikitidis S, Tefas Anastasios, Pitas Ioannis (2011). Facial Expression Recognition Using Clustering Discriminant Non-negative Matrix Factorization. 18th IEEE International Conference in Image Processing (ICIP’2011). IEEE International Conference in Image Processing (ICIP’2011). Brussels, Belgium. p. 3001 - 3004.
Tefas Anastasios, Pitas Ioannis (2011). Human Centered Interfaces for Assisted Living. Man-Machine Interactions 2. International Conference on Man-Machine Interactions (ICMMI’2011). The Beskids, Poland. Vol. 103 pp 3-10.
Zoidi O, Tefas Anastasios, Pitas Ioannis (2011). Object Tracking Based on Local Steering Kernels for Drinking Activity Recognition. Proceedings of the ITI 2011 33rd International Conference on Information Technology Interfaces (ITI). 33rd International Conference on Information Technology Interfaces (ITI). Dubrovnik, Croatia. p. 237 - 242.

2010

Kyperountas Marios, Tefas Anastasios, Pitas Ioannis (2010). Salient feature and reliable classifier selection for facial expression classification. Pattern Recognition. Published Version. vol.43 no.3 p.972-986.
Tsapanos N, Tefas Anastasios, Pitas Ioannis (2010). Online Shape Learning using Binary Search Trees. Image and Vision Computing. vol.28 no.7 p.1146-1154.
Goudelis G, Tefas Anastasios, Pitas Ioannis (2010). Intelligent Multimedia Analysis for Emerging Biometrics. επιμ. Sencar H. T, Velastin S, Nikolaidis Nikolaos, Lian S. Intelligent Multimedia Analysis for Security Applications. Springer.
Kyperountas M, Tefas Anastasios, Pitas Ioannis (2010). Discriminant Learning in Large Databases Using Training Space Partitioning. Advances in Face Image Analysis – Techniques and Technologies. editor Zhang, Y. Z. Pennsylvania.
Tefas Anastasios, Pitas Ioannis (2010). Principal Component Analysis. The Industrial Electronics Handbook. editors Wilamowski B., Irwin, D. CRC press.
Arvanitopoulos N, Bouzas D, Tefas A (2010). Subclass Error Correcting Output Codes Using Fisher's Linear Discriminant Ratio. Proceedings 20th International Conference on Pattern Recognition (ICPR’2010). Istanbul, Turkey.
Arvanitopoulos N, Bouzas D, Tefas A (2010). Mutual Information Measures for Subclass Error-Correcting Output Codes Classification. Proceedings 6th Hellenic Conference on Artificial Intelligence (SETN’2010). Athens, Greece.
Bolis D, Maronidis A, Tefas Anastasios, Pitas Ioannis (2010). Improving the Robustness of Subspace Learning Techniques for Facial Expression Recognition. Proceedings 20th International Conference on Artificial Neural Networks (ICANN’2010). 20th International Conference on Artificial Neural Networks (ICANN’2010). Thessaloniki, Greece.
Bouzas D, Arvanitopoulos N, Tefas A (2010). Optimizing Subclass Discriminant Error Correcting Output Codes Using Particle Swarm Optimization. Proceedings IEEE International Joint Conference on Neural Networks (IJCNN’2010). Barcelona, Spain.
Marami E, Tefas A (2010). Using Particle Swarm Optimization for Scaling and Rotation invariant Face Detection. Proceedings IEEE Congress on Evolutionary Computation. Barcelona, Spain.
Marami E, Tefas A (2010). Face Detection using Particle Swarm Optimization and Support Vector Machines. Proceedings 6th Hellenic Conference on Artificial Intelligence (SETN’2010). Athens, Greece.
Maronidis A, Tefas Anastasios, Pitas Ioannis (2010). Frontal View Recognition Using Spectral Clustering and Subspace Learning Methods. Proceedings 20th International Conference on Artificial Neural Networks (ICANN’2010). 20th International Conference on Artificial Neural Networks (ICANN 2010). Thessaloniki, Greece.
Petrakis S, Tefas A (2010). Neural Networks Training for Weapon Selection in First-Person Shooter Games. Proceedings 20th International Conference on Artificial Neural Networks (ICANN’2010). Thessaloniki, Greece.
Tsapanos N, Tefas Anastasios, Pitas Ioannis (2010). Dynamic Shape Learning and Forgetting. Artificial Neural Networks – ICANN 2010 : 20th International Conference, Thessaloniki, Greece, September 15-18, 2010, Proceedings, Part III. 20th International Conference on Artificial Neural Networks (ICANN’2010). Thessaloniki, Greece. p.333-338.

2008

Gkalelis N, Tefas Anastasios, Pitas Ioannis (2008). Combining fuzzy vector quantization with linear discriminant analysis for continuous human movement recognition. IEEE Transactions on Circuits and Systems for Video Technology. Published Version. vol.18 no.11 p.1511-1521.
Goudelis G, Tefas Anastasios, Pitas Ioannis (2008). Emerging Biometric Modalities: a Survey. Journal on Multimodal User Interfaces. vol.2 p.217-235.
Goudelis G, Tefas Anastasios, Pitas Ioannis (2008). Automated Facial Pose Extraction From Video Sequences Based on Mutual Information. IEEE Transactions on Circuits and Systems for Video Technology. Published Version. vol.18 no.3 p.418 - 424.
Kyperountas Marios, Tefas Anastasios, Pitas Ioannis (2008). Dynamic training using multistage clustering for face recognition. Pattern Recognition. Published Version. vol.41 no.3 p.894-905.
Gkalelis N, Tefas Anastasios, Pitas Ioannis (2008). Sparse human movement representation and recognition. Proc. IEEE 2008 International Workshop on Multimedia Signal Processing (MMSP 2008). International Workshop on Multimedia Signal Processing (MMSP 2008). Cairns, Australia. Published Version.
Gkalelis N, Tefas Anastasios, Pitas Ioannis (2008). Human movement recognition using fuzzy clustering and discriminant analysis. Proc. 16th European Signal Processing Conference (EUSIPCO 2008). 16th European Signal Processing Conference (EUSIPCO 2008). Lausanne, Switzerland. Published Version.
Goudelis G, Zafeiriou S, Tefas Anastasios, Pitas Ioannis (2008). Motivating Class-specific Nonlinear Projections for Face Verification. Proceedings IEEE International Conference on Image Processing (ICIP’2008). IEEE International Conference on Image Processing (ICIP’2008). San Diego, CA.
Kyperountas M, Tefas Anastasios, Pitas Ioannis (2008). Face Recognition via Adaptive Discriminant Clustering. 15th IEEE International Conference on Image Processing (ICIP’2008). 15th IEEE International Conference on Image Processing (ICIP’2008). San Diego,CA. p.2744-2747.
Tsapanos N, Tefas Anastasios, Pitas Ioannis (2008). An Online Self-Balancing Binary Search Tree for Hierarchical Shape Matching. Proceedings 3rd International Conference on Computer Vision Theory & Applications (VISAPP’2008). 3rd International Conference on Computer Vision Theory and Applications. Funchal, Madeira - Portugal. p. 591-597.
Zafeiriou S, Tefas Anastasios, Pitas Ioannis (2008). Gender Determination Using a Support Vector Machine Variant. Proceedings 16th European Signal Processing Conference (EUSIPCO’2008). 16th European Signal Processing Conference (EUSIPCO’2008). Lausanne, Switzerland.

2007

Goudelis G, Zafeiriou S, Tefas Anastasios, Pitas Ioannis (2007). Class-Specific Kernel-Discriminant Analysis for Face Verification. IEEE Transactions on Information Forensics and Security. Published Version. vol.2 no.3 p.570 - 587.
Kyperountas Marios, Tefas Anastasios, Pitas Ioannis (2007). Weighted Piecewise LDA for Solving the Small Sample Size Problem in Face Verification. IEEE Transactions on Neural Networks. Published Version. vol.18 no.2 p.506 - 519.
Zafeiriou Stefanos, Tefas Anastasios, Pitas Ioannis (2007). Minimum Class Variance Support Vector Machines. IEEE Transactions on Image Processing. Published Version. vol.16 no.10 p.2551 - 2564.
Zafeiriou Stefanos, Tefas Anastasios, Pitas Ioannis (2007). Learning Discriminant Person-Specific Facial Models Using Expandable Graphs. IEEE Transactions on Information Forensics and Security. Published Version. vol.2 no.1 p.55 - 68.
Zafeiriou Stefanos, Tefas Anastasios, Pitas Ioannis (2007). The discriminant elastic graph matching algorithm applied to frontal face verification. Pattern Recognition. Published Version. vol.40 no.10 p.2798-2810.
Goudelis G, Zafeiriou S, Tefas Anastasios, Pitas Ioannis (2007). A novel kernel discriminant analysis for face verification. IEEE International Conference on Image Processing. Proc.of 2007 IEEE International Conference on Image Processing.
Kyperountas M, Tefas Anastasios, Pitas Ioannis (2007). Face verification using locally linear discriminant models. Proc. of Int. Conf. on Image Processing (ICIP 2007). Int. Conf. on Image Processing (ICIP 2007). San Antonio.
Zafeiriou S, Tefas Anastasios, Pitas Ioannis (2007). A new class of decision surfaces based on the minimization of within class variance. 2007 IEEE International Workshop on Machine Learning for Signal Processing (MLSP 2007). 2007 IEEE International Workshop on Machine Learning for Signal Processing (MLSP 2007). Thessaloniki, Greece. p.441-446.
Zafeiriou S, Tefas Anastasios, Pitas Ioannis (2007). Discriminant Graph Structures for Face Verification. IEEE International Conference on Acoustics Speech and Signal Processing 2007 (ICASSP' 07). ICASSP 2007 IEEE International Conference on Acoustics Speech and Signal Processing 2007. Honolulu, HI. vol.1 p.I-497-I-500.
Zafeiriou S, Tefas Anastasios, Pitas Ioannis (2007). Advances in Elastic Graph Matching for Frontal Face Verification. Proceedings of the 2007 IEEE Symposium on Computational Intelligence in Image and Signal Processing (CIISP 2007). 2007 IEEE Symposium on Computational Intelligence in Image and Signal Processing (CIISP 2007). Honolulu, HI. p.319-324.

2006

Zafeiriou Stefanos, Tefas Anastasios, Buciu I, Pitas Ioannis (2006). Exploiting discriminant information in nonnegative matrix factorization with application to frontal face verification. IEEE Transactions on Neural Networks. Published Version. vol.17 no.3 p.683 - 695.
Nikolaidis Nikolaos, Tefas Anastasios, Pitas Ioannis (2006). Chaotic Sequences for Digital Watermarking. Advances on Nonlinear Signal and Image Processing. editors Marshall S., Sicuranza G. Hindawi Publishing Corporation. p.205-238.

2005

Zafeiriou Stefanos, Tefas Anastasios, Pitas Ioannis (2005). Blind robust watermarking schemes for copyright protection of 3D mesh objects. IEEE Transactions on Visualization and Computer Graphics. Published Version. vol.11 no.5 p.569-607.
Tefas Anastasios, Nikolaidis Nikolaos, Pitas Ioannis (2005). Watermarking Techniques for Image Authentication and Copyright Protection. The Handbook of Image and Video Processing. editor Bovik, A. Elsevier Academic Press. p.1083-1109.
Goudelis G, Tefas Anastasios, Pitas Ioannis (2005). On Emerging BiometricTechnologies. Proceedings 3rd COST 275 Workshop : Biometrics on the Internet. 3rd COST 275 Workshop : Biometrics on the Internet. Hatfield, England.
Kyperountas M, Tefas Anastasios, Pitas Ioannis (2005). Methods for Improving Discriminant Analysis for Face Authentication. IEEE International Conference on Acoustics, Speech and Signal Processing. Proceedings(ICASSP’2005). IEEE International Conference on Acoustics, Speech and Signal (ICASSP’2005). Philadelphia, PA. vol.2 p.549-552.
Tefas Anastasios, Giannoula A, Nikolaidis Nikolaos, Pitas Ioannis (2005). Enhanced transform-domain correlation-based audio watermarking. Proc. of IEEE Int. Conf. on Acoustics, Speech and Signal Processing, ICASSP 2005. IEEE Int. Conf. on Acoustics, Speech and Signal Processing, ICASSP 2005. Philadelphia, PA, USA. Published Version. vol.2 p.1049-1052.
Zafeiriou S, Tefas Anastasios, Pitas Ioannis (2005). Discriminant NMFfaces for Frontal Face Verification. Proc. of IEEE Int. Workshop on Machine Learning for Signal Processing (MLSP 2005). IEEE Int. Workshop on Machine Learning for Signal Processing (MLSP 2005). Mystic, Connecticut. Published Version. p.355-359.
Zafeiriou S, Tefas Anastasios, Pitas Ioannis (2005). Class-Specific Discriminant Non-negative Matrix Factorization for Frontal Face Verification. Proc. of Int. Conf. Advances in Pattern Recognition (ICAPR 2005). Int. Conf. Advances in Pattern Recognition (ICAPR 2005). Bath, United Kingdom. Published Version. p.206-215.
Zafeiriou S, Tefas Anastasios, Pitas Ioannis (2005). Linear Discriminant Feature Selection Techniques in Elastic Graph Matching. Proc. of EURASIP European Signal Processing Conf. (EUSIPCO 2005). EURASIP European Signal Processing Conf. (EUSIPCO 2005). Antalya, Turkey. Published Version.
Zafeiriou S, Tefas Anastasios, Pitas Ioannis (2005). Exploiting Discriminant Information in Elastic Graph Matching. Proc. of IEEE Int. Conf. on Image Processing (ICIP 2005). IEEE Int. Conf. on Image Processing (ICIP 2005). Genova, Italy. Published Version. vol.3 p.768-771.
Zafeiriou S, Tefas Anastasios, Pitas Ioannis (2005). Elastic Graph Matching versus Linear Subspace Methods for Frontal Face Verification. Proc. of IEEE Int. Workshop on Nonlinear Signal and Image Processing (NSIP 2005). IEEE Int. Workshop on Nonlinear Signal and Image Processing (NSIP 2005). Sapporo, Japan. Published Version.

2003

Tefas Anastasios, Nikolaidis Athanasios, Nikolaidis Nikolaos, Solachidis V, Tsekeridou S, Pitas Ioannis (2003). Markov chaotic sequences for correlation based watermarking schemes. Chaos Solitons and Fractals. Published Version. vol.17 no.2-3 p.567-573.
Tefas Anastasios, Nikolaidis A, Nikolaidis Nikolaos, Solachidis V, Tsekeridou S, Pitas Ioannis (2003). Performance Analysis of Correlation-Based Watermarking Schemes Employing Markov Chaotic Sequences. IEEE Transactions on Signal Processing. Published Version. vol.51 no.7 p. 1979 - 1994.
Giannoula A, Tefas Anastasios, Nikolaidis Nikolaos, Pitas Ioannis (2003). Improving the Detection Reliability of Correlation-based Watermarking Techniques. Proceedings of the 2003 IEEE International Conference on Multimedia and Expo(ICME’2003). 2003 IEEE International Conference on Multimedia and Expo. Baltimore, MD. vol.1 p.209-212.
Kalivas A, Tefas Anastasios, Pitas Ioannis (2003). Watermarking of 3D models Using Principal Component Analysis. Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP’2003). IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP’2003). Baltimore, MD. vol.5 no.2 p.637-640.
Laftsidis C, Tefas Anastasios, Nikolaidis Nikolaos, Pitas Ioannis (2003). Robust Multibit Audio Watermarking in the Temporal Domain. Proceedings of the 2003 IEEE International Symposium on Circuits and Systems (ISCAS’2003). 2003 IEEE International Symposium on Circuits and Systems (ISCAS’2003). Bangkok, Thailand. vol.2 p.944-947.
Zafeiriou S, Kalyvas A, Tefas Anastasios, Nikolaidis Nikolaos, Pitas Ioannis (2003). Watermarking of 3D mesh models robust to basic geometric transformations. Proc. of 9th Panhellenic Conf. on Informatics (PCI `03). 9th Panhellenic Conf. on Informatics (PCI `03). Thessaloniki, Greece. Published Version. p.575-585.

2002

Tefas Anastasios, Kotropoulos Konstantinos, Pitas Ioannis (2002). Face verification using elastic graph matching based on morphological signal decomposition. Signal Processing. Published Version. vol.82 no.6 p.833-851.
Luizis G, Tefas Anastasios, Pitas Ioannis (2002). Copyright Protection of 3D Images using Watermarks of Specific Spatial Structure. Proc. of IEEE Int. Conf. on Multimedia and Expo 2002 (ICME2002). IEEE Int. Conf. on Multimedia and Expo 2002 (ICME2002). Lausanne, Switzerland. Published Version. vol.2 p.557-560.
Nikolaidis Nikolaos, Solachidis V, Tefas Anastasios, Pitas Ioannis (2002). Watermark Detection: Benchmarking Perspectives. Proc. of IEEE Int. Conf. on Multimedia and Expo 2002(ICME2002), Special Session on Benchmarking of Data Hiding Technologies. IEEE Int. Conf. on Multimedia and Expo 2002(ICME2002), Special Session on Benchmarking of Data Hiding Technologies. Lausanne, Switzerland. Published Version. vol.2 p.493-496.
Nikolaidis Nikolaos, Solachidis V, Tefas Anastasios, Arguriou V, Pitas Ioannis (2002). Benchmarking of Still Image Watermarking Methods: Principles and State of the Art. Proceedings International Conference on Electronic Imaging and the Visual Arts (EVA’2002). Electronic Imaging & the Visual Arts 2002 (EVA2002). Florence, Italy. Published Version. p.158-162.
Tefas Anastasios, Louizis G, Pitas Ioannis (2002). 3D Image Watermarking robust to Geometric Distortions. Proc. of IEEE Int. Conf. on Acoustics Speech and Signal Processing 2002 (ICASSP2002). IEEE Int. Conf. on Acoustics Speech and Signal Processing 2002 (ICASSP2002). Florida, USA. Published Version. 2002. vol.4 p.3465-3468.

2001

Bartollini F, Tefas Anastasios, Barni M, Pitas Ioannis (2001). Image authentication techniques for surveillance applications. Proceedings of the IEEE Institute of Electrical and Electronics Engineers. Published Version. vol.89 no.10 p.1403 - 1418.
Tefas Anastasios, Kotropoulos Konstantinos, Pitas Ioannis (2001). Using support vector machines to enhance the performance of elastic graph matching for frontal face authentication. IEEE Transactions on Pattern Analysis and Machine Intelligence. Published Version. vol.23 no.7 p.735 - 746.
Tsekeridou S, Solachidis Vasileios, Nikolaidis Nikolaos, Nikolaidis Athanasios, Tefas Anastasios, Pitas Ioannis (2001). Statistical analysis of a watermarking system based on Bernoulli chaotic sequences. Signal Processing. Published Version. vol.81 no.6 p.1273-1293.
Nikolaidis A, Tsekeridou S, Tefas A, Solachidis V (2001). A Survey on Watermarking Application Scenarios and Related Attacks. Proceedings IEEE International Con-ference on Image Processing (ICIP’2001). Thessaloniki, Greece. vol.3 p.991-994.
Solachidis V, Tefas Anastasios, Nikolaidis Nikolaos, Tsekeridou S, Nikolaidis Athanasios, Pitas Ioannis (2001). A benchmarking protocol for watermarking methods. Proc. of 2001 IEEE Int. Conf. on Image Processing(ICIP'01). 2001 IEEE Int. Conf. on Image Processing(ICIP'01). Thessaloniki, Greece. Published Version. vol.3 p.1023-1026.
Solachidis V, Tsekeridou S, Tefas Anastasios, Pitas Ioannis (2001). A simple benchmarking system for performance evaluation of still image watermarking methods. Proceedings In-ternational Symposium on Telecommunications (IST 2001). Int. Symposium on Telecommunications (IST'01). Tehran, IRAN. Published Version. p.193-196.
Tefas Anastasios, Nikolaidis Athanasios, Nikolaidis Nikolaos, Solachidis V, Tsekeridou S, Pitas Ioannis (2001). Markov Chaotic Sequences for Correlation based Watermarking schemes. Proceedings of International Conference on Nonlinear Dynamics(NLD 01). International Conference on Nonlinear Dynamics(NLD 01). Thessaloniki, Greece.
Tefas Anastasios, Louizis G, Pitas Ioannis, Nikolaidis Nikolaos, Lyroudia Kleoniki (2001). Robust Spatial 3D Image Watermarking. Proceedings of 1st IEEE International Symposium on Signal Processing and Information Technology (ISSPIT’2001). 1st IEEE International Symposium on Signal Processing and Information Technology. Cairo, Egypt. p.229-232.
Tefas Anastasios, Nikolaidis Athanasios, Nikolaidis Nikolaos, Solachidis V, Pitas Ioannis (2001). Performance Analysis of Watermarking Schemes based on Skew Tent Chaotic Sequences. Proceedings Workshop on Nonlinear Signal and Image Processing (NSIP’2001). NSIP'01. Baltimore, Maryland, USA. Published Version.
Tefas Anastasios, Pitas Ioannis (2001). Robust Spatial Image Watermarking using Progressive Detection. Proc. of 2001 IEEE Int. Conf. on Acoustics,Speech and Signal Processing (ICASSP 2001). 2001 IEEE Int. Conf. on Acoustics,Speech and Signal Processing (ICASSP 2001). Utah, USA. Published Version. vol.3 p.1973-1976.
Tefas Anastasios, Nikolaidis Athanasios, Nikolaidis Nikolaos, Solachidis V, Tsekeridou S, Pitas Ioannis (2001). Statistical Analysis of Markov Chaotic Sequences for Watermarking applications. Proc. of 2001 IEEE Int. Symposium on Circuits and Systems(ISCAS 2001). 2001 IEEE Int. Symposium on Circuits and Systems(ISCAS 2001). Sydney, Australia. Published Version. vol.2 p.57-60.
Tsekeridou S, Solachidis V, Nikolaidis Nikolaos, Nikolaidis Athanasios, Tefas Anastasios, Pitas Ioannis (2001). Theoretic Investigation of the Use of Watermark Signals derived from Bernoulli Chaotic Sequences. Proc. of the 12th Scandinavian Conf. on Image Analysis 2001 (SCIA2001). 12th Scandinavian Conf. on Image Analysis 2001 (SCIA2001). Bergen, Norway. Published Version. p.600-607.
Tsekeridou S, Solachidis V, Nikolaidis Nikolaos, Nikolaidis Athanasios, Tefas Anastasios, Pitas Ioannis (2001). Theoretic Performance Analysis of a Watermarking System based on Bernoulli Chaotic Sequences. Proc. of Communications and Multimedia Security Conf. (CMS 2001). Communications and Multimedia Security Conf. (CMS 2001). Darmstadt, Germany. Published Version. p.81-91.
Tsekeridou S, Solachidis V, Nikolaidis Nikolaos, Nikolaidis Athanasios, Tefas Anastasios, Pitas Ioannis (2001). Bernoulli Shift Generated Chaotic Watermarks: Theoretic Investigation. Proc. of IEEE Int. Conf. on Acoustics, Speech and Signal Processing (ICASSP2001). IEEE Int. Conf. on Acoustics, Speech and Signal Processing (ICASSP2001). Salt Lake City, Utah, USA. Published Version. vol.3 p.1989-1992.

2000

Kotropoulos Konstantinos, Tefas Anastasios, Pitas Ioannis (2000). Morphological elastic graph matching applied to frontal face authentication under well-controlled and real conditions. Pattern Recognition. Published Version. vol.33 no.12 p.1935-1947.
Kotropoulos Konstantinos, Tefas Anastasios, Pitas Ioannis (2000). Frontal face authentication using morphological elastic graph matching. IEEE Transactions on Image Processing. Published Version. vol.9 no.4 p. 555 - 560.
Kotropoulos Konstantinos, Tefas Anastasios, Pitas Ioannis (2000). Frontal face authentication using discriminating grids with morphological feature vectors. IEEE Transactions on Multimedia. Published Version. vol.2 no.1 p.14 - 26.
Matas J, Hamouz M, Johsson K, Kittler J, Li Y, Kotropoulos Konstantinos, Tefas Anastasios, Pitas Ioannis, Tan T, Yan H, Smeraldi F, et al (2000). Comparison of face verification results on the XM2VTS database. Proc. of 2000 Int. Conf. on Pattern Recognition. 2000 Int. Conf. on Pattern Recognition. Spain. Published Version. vol.4 p.858-863.
Nikolaidis Nikolaos, Tsekeridou S, Nikolaidis Athanasios, Tefas Anastasios, Solachidis V, Pitas Ioannis (2000). Applications of chaotic signal processing techniques to multimedia watermarking. Proceedings IEEE Workshop on Nonlinear Dynamics in Electronic Systems (NDES’2000). IEEE Workshop on Nonlinear Dynamics in Electronic Systems. Catania Italy. Published Version. p.1-7.
Tefas Anastasios, Pitas Ioannis (2000). Multi-bit Image Watermarking Robust to Geometric Distortions. Proc. of IEEE Int. Conf. on Image Processing (ICIP'2000). IEEE Int. Conf. on Image Processing (ICIP'2000). Vancouver, Canada. Published Version. vol.3 p.710-713.
Tefas Anastasios, Kotropoulos Konstantinos, Pitas Ioannis (2000). Using Support Vector Machines for Face authentication based on elastic graph matching. Proceedings IEEE International Con-ference Image Processing (ICIP 2000). IEEE Int. Conf. on Image Processing (ICIP'2000). Vancouver, Canada. Published Version. vol.1 p.29-32.
Tefas Anastasios, Pitas Ioannis (2000). Image Authentication and Tamper Proofing using Mathematical Morphology. Proc. of European Signal Processing Conf. (EUSIPCO'2000). European Signal Processing Conf. (EUSIPCO'2000). Tampere, Finland. Published Version.
Tefas Anastasios, Kotropoulos Konstantinos, Pitas Ioannis (2000). Face authentication by using elastic graph matching and Support Vector Machines. Proc. of IEEE Int. Conf. on Acoustics Speech and Signal Processing (ICASSP'2000). IEEE Int. Conf. on Acoustics Speech and Signal Processing (ICASSP'2000). Instanbul, Turkey. Published Version. vol.4 p.2409-2412.
Tefas Anastasios, Pitas Ioannis (2000). Image Authentication based on Chaotic Mixing. Proc. of IEEE Int. Symposium on Circuits and Systems (ISCAS'2000). IEEE Int. Symposium on Circuits and Systems (ISCAS'2000). Geneva, Switzerland. Published Version. vol.1 p.216-219.
Tefas Anastasios, Kotropoulos Konstantinos, Pitas Ioannis (2000). Face authentication based on mathematical morphology. Proc. of European Workshop "Frontieres of Mathematical Morphology". European Workshop "Frontieres of Mathematical Morphology. Strasbourg, France. Published Version.

2009

Tefas Anastasios, Pitas Ioannis (2009). Face Verification based on Elastic Graph Matching. Biometrics: Theory Methods and Applications. editors Boulgouris N., Plataniotis K., Micheli-Tzanakou E. Wiley-IEEE Press.
Tefas Anastasios, Nikolaidis Nikolaos, Pitas Ioannis (2009). Image Watermarking: Techniques and Applications. The Essential Guide to Video Processing. editor Bovik, A. Elsevier. p.597-648.
Gkalelis N, Tefas Anastasios, Pitas Ioannis (2009). Human identification from human movements. IEEE International Conference on Image Processing (ICIP), 2009. 16th IEEE International Conference on Image Processing (ICIP), 2009. Cairo, Egypt. Published Version. p.2585 - 2588.
Gkalelis N, Tefas Anastasios, Pitas Ioannis (2009). Fusion of Movement Specific Human Identification Experts. Biometric ID Management and Multimodal Communication Joint COST 2101 and 2102 International Conference, Proceedings Series: Lecture Notes in Computer Science, Vol. 5707. Joint COST 2101 and 2102 International Conference on Biometric ID Management and Multimodal Communication. Madrid, Spain. Published Version. p.138-145.
Goudelis G, Tefas Anastasios, Pitas Ioannis (2009). Using Mutual Information to Indicate Facial Poses in Video Sequences. Proceedings 8th ACM International Conference on Image and Video Retrieval (CIVR 2009 ). 8th ACM International Conference on Image and Video Retrieval (CIVR 2009 ). Santorini Island, Greece.
Kyperountas M, Tefas Anastasios, Pitas Ioannis (2009). Pairwise facial expression classification. Proceedings 11th IEEE International Workshop on Multimedia Signal Processing (MMSP’2009). MMSP '09. IEEE International Workshop on Multimedia Signal Processing, 2009. Rio De Janeiro, Brazil. Published Version. p.1-4.

2004

Markoulidis A, Tefas Anastasios, Kotropoulos Konstantinos, Pitas Ioannis (2004). Turning a frontal face verification technique to a system prototype. Proc. of 2nd COST275 Workshop Biometrics on the Internet. 2nd COST275 Workshop Biometrics on the Internet. Spain. Published Version.
Tefas Anastasios, Nikolaidis Nikolaos (2004). Chaotic watermark sequences for correlation-based schemes. Proceedings 12th European Signal Processing Conference (EUSIPCO’2004). 12th European Signal Processing Conf. EUSIPCO2004). Vienna, Austria. Published Version. p.1891-1894.
Zafeiriou S, Tefas Anastasios, Pitas Ioannis (2004). A Blind Robust Watermarking Scheme for Copyright Protection of 3D Mesh Models. Proc. of IEEE Int. Conf. on Image Processing (ICIP 2004). IEEE Int. Conf. on Image Processing (ICIP 2004). Singapore. Published Version. vol.3 p.1569-1572.

1999

Kotropoulos Konstantinos(Constantine), Tefas Anastasios, Pitas Ioannis, Fernandez C, Fernandez F (1999). Performance assessment of morphological dynamic link architecture under optimal and real operating conditions. Proceedings of the IEEE-EURASIP Workshop on Nonlinear Signal and Image Processing (NSIP'99), Antalya, Turkey, June 20-23, 1999. IEEE-EURASIP Workshop on Nonlinear Signal and Image Processing. A. Enis Çetin, Lale Akarun, Aysin Ertüzün, Metin N. Gurcan, Yasemin Yardimci (Eds.). Antalya - Turkey. p.355-359.
Kotropoulos Konstantinos(Constantine), Tefas Anastasios, Pitas Ioannis (1999). Morphological elastic graph matching applied to frontal face authentication under optimal and real conditions. IEEE International Conference onMultimedia Computing and Systems. IEEE International Conference on Multimedia Computing and Systems. Florence - Italy. vol. 2 p. 934 - 938.
Richard G, Menguy Y, Guis I, Suaudeau N, Boudy J, Lockwood P, Fernandez C, Fernandez F, Kotropoulos Konstantinos(Constantine), Tefas Anastasios, Pitas Ioannis, et al (1999). Multi Modal Verification for Teleservices and Security Applications(M2VTS). IEEE International Conference on Multimedia Computing and Systems,. IEEE International Conference on Multimedia Computing and Systems (ICMCS). Florence - Italy. vol. 2 p.1061-1063.
Tefas Anastasios, Kotropoulos Konstantinos, Pitas Ioannis (1999). Enhancing the performance of elastic graph matching for frontal face authentication by using support vector machines. Proc. of Int. Workshop on support vector machine theory and applications (ACCAI '99). Int. Workshop on support vector machine theory and applications (ACCAI '99). Chania, Greece. Published Version.
Tefas Anastasios, Menguy Y, Kotropoulos Konstantinos, Richard G, Pitas Ioannis, Lockwood P (1999). Compensating for variable recording conditions in frontal face authentication algorithms. Proc. of IEEE Int. Conf. on Acoustics, Speech and Signal Processing (ICASSP'99). IEEE Int. Conf. on Acoustics, Speech and Signal Processing (ICASSP'99). Arizona, USA. Published Version.

1998

Tefas Anastasios, Kotropoulos Konstantinos, Pitas Ioannis (1998). Variants of Dynamic Link Architecture based on Mathematical Morphology for Frontal Face Authentication. Proc. of IEEE Conf. on Computer Vision and Pattern Recognition (CVPR'98). IEEE Conf. on Computer Vision and Pattern Recognition (CVPR'98). Santa Barbara, California, USA. Published Version.
Tefas Anastasios, Kotropoulos Konstantinos, Pitas Ioannis (1998). Face Verification based on Morphological Shape Decomposition. Proc. of IEEE Third Int. Conf. on Automatic Face and Gesture Recognition (FG'98). IEEE Third Int. Conf. on Automatic Face and Gesture Recognition (FG'98). Nara, Japan. Published Version.

1997

Kotropoulos Konstantinos(Constantine), Tefas Anastasios, Pitas Ioannis (1997). Face Authentication based on Morphological Shape Decomposition. Sixth International Conference on Image Processing and Its Applications, 1997. IEEE Conference on Image Processing and its Applications. Dublin - Ireland. vol. 2 p. 794 - 798.

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