Publications | IVA
Image and Video Analysis
Publications
2006

Book Chapters

M. Wallace, Ph. Mylonas, G. Akrivas, Y. Avrithis, S. Kollias. Automatic thematic categorization of multimedia documents using ontological information and fuzzy algebra. In Soft Computing in Ontologies and Semantic Web, Ma Z. (Eds.), Springer, 2006.
[ Abstract ] [ Bibtex ] [ PDF ]
2004

Journals

G. Akrivas, G. B. Stamou, S. Kollias. Semantic Association of Multimedia Document Descriptions through Fuzzy Relational Algebra and Fuzzy Reasoning. In IEEE Transactions on Systems, Man, and Cybernetics, vol 34, no. 2, March 2004.
[ Abstract ] [ Bibtex ] [ PDF ]

Conferences

A. Raouzaiou, S. Ioannou, G. Akrivas, K. Karpouzis, S. Kollias. Adaptation of Expression Analysis Based on Evaluation Principles. In Proceedings of Fourth European Symposium on Intelligent Technologies and their implementation on Smart Adaptive Systems (EUNITE 2004), Aachen, Germany, June 2004.
[ Abstract ] [ Bibtex ] [ PDF ]

PhD Thesis

G. Akrivas. Knowledge-based analysis and access to multimedia information. PhD Thesis, School of Electrical and Computer Engineering, National Technical University of Athens, March 2004.
[ Abstract ] [ Bibtex ] [ PDF ]
2003

Journals

P. Daras, I. Kompatsiaris, I. Grinias, G. Akrivas, G. Tziritas, S. Kollias, M. Strintzis. MPEG-4 Authoring Tool Using Moving Object Segmentation and Tracking in Video Shots. In EURASIP Journal of Applied Signal Processing, vol 2003, no. 9, pp. 861-877, February 2003.
[ Abstract ] [ Bibtex ] [ PDF ]

Conferences

M. Wallace, G. Akrivas, G. Stamou. Automatic Thematic Categorization of Documents Using a Fuzzy Taxonomy and Fuzzy Hierarchical Clustering. In Proceedings of IEEE International Conference on Fuzzy Systems (FUZZ-IEEE 2003), St. Liouis, MO, USA, May 2003.
[ Abstract ] [ Bibtex ] [ PDF ]
Giorgos Akrivas and Stefanos Kollias. Detection of Composite Geometric Structures through Possibilistic Reasoning. In Proceedings of European Symposium on Intelligent Technologies, Hybrid Systems and their implementation on Smart Adaptive Systems (EUNITE 2003), June 2003.
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M. Wallace, G. Akrivas, Ph. Mylonas, Y. Avrithis, S. Kollias. Using context and fuzzy relations to interpret multimedia content. In Proceedings of Third International Workshop on Content-Based Multimedia Indexing (CBMI) (CBMI 2003), Rennes, France, September 2003.
[ Abstract ] [ Bibtex ] [ PDF ]
2002

Conferences

G. Akrivas, M. Wallace, G. Andreou, G. Stamou, S. Kollias. Context - Sensitive Semantic Query Expansion. In Proceedings of IEEE International Conference on Artificial Intelligence Systems (ICAIS 2002), Divnomorskoe, Russia, September 2002.
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G. Akrivas, M. Wallace, G. Stamou, S. Kollias. Context - Sensitive Query Expansion Based on Fuzzy Clustering of Index Terms. In Proceedings of Flexible Query Answering Systems (FQAS 2002), Copenhagen, Denmark, October 2002.
[ Abstract ] [ Bibtex ] [ PDF ]
G. Tsechpenakis, G. Akrivas, G. Andreou, G. Stamou, S. Kollias. Knowledge - Assisted Video Analysis and Object Detection. In Proceedings of European Symposium on Intelligent Technologies, Hybrid Systems and their implementation on Smart Adaptive Systems (EUNITE 2002), Algarve, Portugal, September 2002.
[ Abstract ] [ Bibtex ] [ PDF ]
M. Wallace, G. Akrivas, G. Stamou, S. Kollias. Representation of user preferences and adaptation to context in multimedia content-based retrieval. In Proceedings of Workshop on Multimedia Semantics, Theory and Practice of Informatics (SOFSEM 2002), Milovy, Czech Republic, November 2002.
[ Abstract ] [ Bibtex ] [ PDF ]

Book Chapters

G. Akrivas, M. Wallace, G. Stamou, S. Kollias. Context - Sensitive Query Expansion Based on Fuzzy Clustering of Index Terms. In Flexible Query Answering Systems, Andreasen T., Motro A., Christiansen H., Larsen H.L. (Eds.), Springer, July 2002.
[ Abstract ] [ Bibtex ] [ PDF ]
2001

Conferences

G. Akrivas, S. Ioannou, E. Karakoulakis, K. Karpouzis, Y. Avrithis, A. Delopoulos, S. Kollias, I. Varlamis, M. Vaziriannis. An Intelligent System for Retrieval and Mining of Audiovisual Material Based on the MPEG-7 Description Schemes. In Proceedings of European Symposium on Intelligent Technologies, Hybrid Systems and their implementation on Smart Adaptive Systems (EUNITE 2001), Tenerife, Spain, December 2001.
[ Abstract ] [ Bibtex ] [ PDF ]
S. Ioannou, G. Akrivas. Archiving multimedia content descriptions: an early adaptation of MPEG-7. In Proceedings of Int. Workshop on Very Low Bitrate Video Coding (VLBV 2001), October 2001.
[ Abstract ] [ Bibtex ] [ PDF ]
G. Akrivas, G. Stamou. Fuzzy semantic association of audiovisual document descriptions. In Proceedings of Int. Workshop on Very Low Bitrate Video Coding (VLBV 2001), October 2001.
[ Abstract ] [ Bibtex ] [ PDF ]
I. Varlamis, M. Vazirgiannis, P. Poulos, G. Akrivas, S. Ioannou. X-Database. A middleware for collaborative video annotation, storage and retrieval. In Proceedings of 8th Panhellenic Conference (PCI 2001), Cyprus, November 2001.
[ Abstract ] [ Bibtex ] [ PDF ]
2000

Conferences

G. Votsis, A. Drosopoulos, G. Akrivas, V. Tzouvaras, Y. Xirouhakis. An MPEG-7 Compliant Integrated System for Video Archiving, Characterization and Retrieval. In Proceedings of IASTED International Conference on Signal and Image Processing (SIP 2000), Las Vegas, Nevada, USA, November 2000.
[ Abstract ] [ Bibtex ] [ PDF ]
Anastasios D. Doulamis, Nikolaos Doulamis, Georgios Akrivas, Stefanos Kollias. Non-sequential video content representation using temporal variation of feature vectors. In Proceedings of IEEE International Conference on Consumer Electronics (ICCE 2000), 2000.
[ Abstract ] [ Bibtex ] [ PDF ]
G. Akrivas, N. Doulamis, A. Doulamis, S. Kollias. Scene Detection Methods for MPEG- encoded Video Signals. In Proceedings of Mediterranean Electrotechnical Conference (MELECON 2000), Nicosia, Cyprus, May 2000.
[ Abstract ] [ Bibtex ] [ PDF ]