Publications | IVA
Image and Video Analysis
2016

Journals

C. Varytimidis, K. Rapantzikos, Y. Avrithis, S. Kollias. α-shapes for local feature detection. In Pattern Recognition, vol 50, no. 1, pp. 56-73, February 2016.
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2015

Journals

G. Tolias, Y. Avrithis, H. Jégou. Image search with selective match kernels: aggregation across single and multiple images. In International Journal of Computer Vision, 2015.
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Conferences

M. Shi, Y. Avrithis, H. Jégou. Early burst detection for memory-efficient image retrieval. In Proceedings of Computer Vision and Pattern Recognition (CVPR 2015), 2015.
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N. Papanelopoulos, Y. Avrithis. Planar shape decomposition made simple. In Proceedings of British Machine Vision Conference (BMVC 2015), Swansea, UK, September 2015.
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Y. Avrithis, Y. Kalantidis, E. Anagnostopoulos, I. Z. Emiris. Web-scale image clustering revisited. In Proceedings of International Conference on Computer Vision (Oral) (ICCV 2015), Santiago, Chile, December 2015.
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2014

Journals

Y. Avrithis, G. Tolias. Hough Pyramid Matching: Speeded-up geometry re-ranking for large scale image retrieval. In International Journal of Computer Vision, vol 107, no. 1, pp. 1-19, March 2014.
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G. Tolias, Y. Kalantidis, Y. Avrithis, S. Kollias. Towards large-scale geometry indexing by feature selection. In Computer Vision and Image Understanding, vol 120, no. 3, pp. 31-45, March 2014.
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Conferences

C. Varytimidis, K. Rapantzikos, Y. Avrithis, S. Kollias. Improving local features by dithering-based image sampling. In Proceedings of Asian Conference on Computer Vision (ACCV 2014), Singapore, November 2014.
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Y. Kalantidis, Y. Avrithis. Locally Optimized Product Quantization for Approximate Nearest Neighbor Search. In Proceedings of International Conference on Computer Vision and Pattern Recognition (CVPR 2014), Columbus, Ohio, June 2014.
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2013

Journals

G. Evangelopoulos, A. Zlatintsi, A. Potamianos, P. Maragos, K. Rapantzikos, G. Skoumas, Y. Avrithis. Multimodal Saliency and Fusion for Movie Summarization based on Aural, Visual, and Textual Attention. In IEEE Transactions on Multimedia, vol 15, no. 7, pp. 1553-1568 , November 2013.
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Conferences

Y. Avrithis. Quantize and Conquer: A dimensionality-recursive solution to clustering, vector quantization, and image retrieval. In Proceedings of International Conference on Computer Vision (ICCV 2013), December 2013.
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G. Tolias, Y. Avrithis, H. Jégou. To aggregate or not to aggregate: selective match kernels for image search. In Proceedings of International Conference on Computer Vision (Oral) (ICCV 2013), December 2013.
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2012

Conferences

Y. Avrithis, Y. Kalantidis. Approximate Gaussian Mixtures for Large Scale Vocabularies. In Proceedings of European Conference on Computer Vision (ECCV 2012), Florence, Italy, October 2012.
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G. Tolias, Y. Kalantidis, Y. Avrithis. SymCity: Feature Selection by Symmetry for Large Scale Image Retrieval. In Proceedings of ACM Multimedia (Full paper) (MM 2012), Nara, Japan, October 2012.
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C. Varytimidis, K. Rapantzikos, Y. Avrithis. WαSH: Weighted α-Shapes for Local Feature Detection. In Proceedings of European Conference on Computer Vision (ECCV 2012), Florence, Italy, October 2012.
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2011

Journals

K. Rapantzikos, Y. Avrithis, S. Kollias. Spatiotemporal features for action recognition and salient event detection. In Cognitive Computation, special issue on Saliency, attention, visual search and picture scanning, vol 3, no. 1, pp. 167-184, 2011.
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Y. Kalantidis, G. Tolias, Y. Avrithis, M. Phinikettos, E. Spyrou, P. Mylonas, S. Kollias. VIRaL: Visual Image Retrieval and Localization. In Multimedia Tools and Applications, 2011.
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Conferences

Y. Kalantidis, LG. Pueyo, M. Trevisiol, R. van Zwol, Y. Avrithis. Scalable Triangulation-based Logo Recognition. In Proceedings of ACM International Conference on Multimedia Retrieval (ICMR 2011), Trento, Italy, April 2011.
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G. Tolias, Y. Avrithis. Speeded-up, Relaxed Spatial Matching. In Proceedings of International Conference on Computer Vision (ICCV 2011), Barcelona, Spain, November 2011.
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Y. Avrithis, K. Rapantzikos. The Medial Feature Detector: Stable Regions from Image Boundaries. In Proceedings of International Conference on Computer Vision (ICCV 2011), Barcelona, Spain, November 2011.
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Book Chapters

K. Rapantzikos, Y. Avrithis, S. Kolias. Vision, Attention Control, and Goals Creation System. In Perception-Action Cycle, V. Cutsuridis, Amir Hussain, John G. Taylor (Eds.), Springer, pp. 363-386, 2011.
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2010

Conferences

K. Rapantzikos, Y. Avrithis, S. Kollias. Detecting Regions from Single Scale Edges. In Proceedings of International Workshop on Sign, Gesture and Activity (SGA'10), European Conference on Computer Vision (ECCV 2010), September 2010.
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Y. Avrithis, G. Tolias, Y. Kalantidis. Feature Map Hashing: Sub-linear Indexing of Appearance and Global Geometry. In Proceedings of ACM Multimedia (Full paper) (MM 2010), Firenze, Italy, October 2010.
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Y. Avrithis, Y. Kalantidis, G. Tolias, E. Spyrou. Retrieving Landmark and Non-Landmark Images from Community Photo Collections. In Proceedings of ACM Multimedia (Full paper) (MM 2010), Firenze, Italy, October 2010.
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2009

Journals

E. Spyrou, G. Tolias, P. Mylonas, Y. Avrithis. Concept detection and keyframe extraction using a visual thesaurus. In Multimedia Tools and Applications, vol 41, no. 3, pp. 337-373, February 2009.
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K. Rapantzikos, N. Tsapatsoulis, Y. Avrithis, S. Kollias. Spatiotemporal Saliency for Video Classification. In Signal Processing: Image Communication, vol 24, no. 7, pp. 557-571, August 2009.
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Ph. Mylonas, E. Spyrou, Y. Avrithis, S. Kollias. Using Visual Context and Region Semantics for High-Level Concept Detection. In IEEE Transactions on Multimedia, vol 11, no. 11, pp. 229-243, February 2009.
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Books

B. Huet, A.F. Smeaton, K. Mayer-Patel, Y. Avrithis. Advances in Multimedia Modeling. Lecture Notes in Computer Science, vol 5371, Springer, January 2009.
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Conferences

S. Nikolopoulos, C. Lakka, I. Kompatsiaris, C. Varytimidis, K. Rapantzikos, Y. Avrithis. A cross media approach for compound document analysis. In Proceedings of 7th International Workshop on Content-Based Multimedia Indexing (CBMI 2009), Chania, Greece, June 2009.
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K. Rapantzikos, Y. Avrithis, S. Kollias. Dense saliency-based spatiotemporal feature points for action recognition. In Proceedings of International Conference on Computer Vision and Pattern Recognition (CVPR 2009), Miami, USA, June 2009.
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Th. Athanasiadis, N. Simou, G. Papadopoulos, R. Benmokhtar, K. Chandramouli, V. Tzouvaras, V. Mezaris, M. Phinikettos, Y. Avrithis, Y. Kompatsiaris, B. Huet, E. Izquierdo. Integrating Image Segmentation and Classification for Fuzzy Knowledge-based Multimedia Indexing. In Proceedings of 15th International MultiMedia Modeling Conference (MMM 2009), Sophia Antipolis, France, January 2009.
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E. Spyrou, G. Tolias, Y. Avrithis. Large Scale Concept Detection in Video Using a Region Thesaurus. In Proceedings of 15th International Multimedia Modeling Conference (MMM 2009), Sophia Antipolis, France, January 2009.
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G. Evangelopoulos, A. Zlatintsi, G. Skoumas, K. Rapantzikos, A. Potamianos, P. Maragos, Y. Avrithis. Video event detection and summarization using audio, visual and text saliency. In Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2009), Taipei, Taiwan, April 2009.
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Y. Kalantidis, G. Tolias, E. Spyrou, Ph. Mylonas, Y. Avrithis, S. Kollias. Visual Image Retrieval and Localization. In Proceedings of 3ο Πανελλήνιο Συνέδριο Φοιτητών Ηλεκτρολόγων Μηχανικών και Μηχανικών Υπολογιστών, Thessaloniki, Greece, April 2009.
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Y. Kalantidis, G. Tolias, E. Spyrou, Ph. Mylonas, Y. Avrithis. Visual Image Retrieval and Localization. In Proceedings of 7th International Workshop on Content-Based Multimedia Indexing (CBMI 2009), Chania, Greece, June 2009.
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Ph. Mylonas, Y. Avrithis, Y. Kompatsiaris. WeKnowIt: Emerging, Collective Intelligence for Personal, Organizational and Social Use. In Proceedings of 40th Annual Conference of Association of Sound and Audiovisual Archives (IASA-HeNAA 2009), September 2009.
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Book Chapters

Ph. Mylonas, V. Solachidis, A. Geyer-Schulz, B. Hoser, S. Chapman, F. Ciravegna, S. Staab, P. Smrz, Y. Kompatsiaris, Y. Avrithis. Efficient Media Exploitation towards Collective Intelligence. In Advances in Data Analysis, Data Handling & Business Intelligence, Studies in Classification, Data Analysis & Knowledge Organization, (Eds.), Springer, pp. , November 2009.
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Th. Athanasiadis, Ph. Mylonas, G. Papadopoulos, V. Mezaris, Y. Avrithis, I. Kompatsiaris, M. Strintzis. Knowledge Driven Segmentation and Classification, in Multimedia Semantics: Metadata, Analysis and Interaction. In , Willey, 2009.
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2008

Journals

Ph. Mylonas, D. Vallet, P. Castells, M. Fernandez, Y. Avrithis. Personalized information retrieval based on context and ontological knowledge. In Knowledge Engineering Review, vol 23, no. 1, pp. 73-100, March 2008.
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Ph. Mylonas, Th. Athanasiadis, M. Wallace, Y. Avrithis, S. Kollias. Semantic Representation of Multimedia Content - Knowledge Representation and Semantic Indexing. In Springer Multimedia Tools and Applications, vol 39, no. 3, pp. 293-327, September 2008.
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Conferences

E. Spyrou, G. Tolias, Ph. Mylonas, Y. Avrithis. A Semantic Multimedia Analysis Approach Utilizing a Region Thesaurus and LSA. In Proceedings of 9th International Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS 2008), May 2008.
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V. Giannekou, P. Tzouveli, Y. Avrithis and S.Kollias. Affine invariant curve matching using normalization and curvature scale-space. In Proceedings of 6th International Workshop on Content-Based Multimedia Indexing (CBMI 2008), London, UK, June 2008.
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E. Spyrou, Ph. Mylonas, Y. Avrithis. A Visual Context Ontology for Multimedia High-Level Concept Detection. In Proceedings of 5th International Workshop in Modeling and Reasoning in Context (MRC 2008), Delft, The Netherlands, June 2008.
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G. Papadopoulos, Th. Athanasiadis, N. Simou, R. Benmokhtar, K. Chandramouli, V. Tzouvaras, V. Mezaris, M. Phinikettos, Y. Avrithis, Y. Kompatsiaris, B. Huet, E. Izquierdo. Combining Segmentation and Classification Techniques for Fuzzy Knowledge-based Semantic Image Annotation. In Proceedings of 3rd international conference on Semantics And digital Media Technologies (SAMT 2008), Koblenz, Germany, December 2008.
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G. Tolias, E. Spyrou, P. Kapsalas, Y. Avrithis et al. COST292 experimental framework for TRECVID 2008. In Proceedings of 6th TRECVID Workshop (TRECVID 2008), Gaithersburg, USA, November 2008.
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Ph. Mylonas, V. Solachidis, A. Geyer-Schulz, B. Hoser, S. Chapman, F. Ciravegna, S. Staab, P. Smrz, Y. Kompatsiaris, Y. Avrithis. Efficient Media Exploitation towards Collective Intelligence. In Proceedings of 32nd Annual Conference of the German Classification Society (GfKl 2008), Hamburg, Germany, July 2008.
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V. Solachidis, Ph. Mylonas, A. Geyer-Schulz, B. Hoser, S. Chapman, F. Ciravegna, S. Staab, C. Contopoulos, I. Gkika, P. Smrz, Y. Kompatsiaris, Y. Avrithis. Generating Collective Intelligence. In Proceedings of 32nd Annual Conference of the German Classification Society (GfKl 2008), Hamburg, Germany, July 2008.
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G. Tolias, E. Spyrou, Y. Avrithis et al. K-Space at TRECVID 2008. In Proceedings of 6th TRECVID Workshop (TRECVID 2008), Gaithersburg, USA, November 2008.
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G. Evangelopoulos, K. Rapantzikos, A. Potamianos, P. Maragos, A. Zlatintsi, Y. Avrithis. Movie Summarization Based On Audio-Visual Saliency Detection. In Proceedings of 15th International Conference on Image Processing (ICIP 2008), San Diego, California, USA, October 2008.
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P. Kapsalas, K. Rapantzikos, A. Sofou, Y. Avrithis. Regions Of Interest for Accurate Object Detection. In Proceedings of International Workshop on Content-Based Multimedia Indexing (CBMI 2008), London, UK, June 2008.
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E. Galmar, Th. Athanasiadis, B. Huet, Y. Avrithis. Spatiotemporal Semantic Video Segmentation. In Proceedings of 10th International Workshop on Multimedia Signal Processing (MMSP 2008), Cairns, Australia, October 2008.
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E. Spyrou, Ph. Mylonas, Y. Avrithis. Using Region Semantics And Visual Context For Scene Classification. In Proceedings of 1st Workshop on Multimedia Information Retrieval: New Trends and Challenges (ICIP 2008), in conjunction with ICIP, San Diego, California, USA, October 2008.
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Book Chapters

G. Evangelopoulos, K. Rapantzikos, P. Maragos, Y. Avrithis, A. Potamianos. Audiovisual Attention Modeling and Salient Event Detection. In Multimodal Processing and Interaction: Audio, Video, Text, P. Maragos, A. Potamianos, P. Gros (Eds.), Springer-Verlag, pp. 179-199, 2008.
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E. Spyrou, Y. Avrithis. Detection of High-Level Concepts in Multimedia. In Encyclopedia of Multimedia, B. Furht (Eds.), Springer, pp. 151-155, 2008.
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S. Dasiopoulou, C. Saathoff, Ph. Mylonas, Y. Avrithis, Y. Kompatsiaris, S. Staab. Introducing Context and Reasoning in Visual Content Analysis: An Ontology-based Framework. In Semantic Multimedia and Ontologies: Theory and Applications, Y. Kompatsiaris, P. Hobson (Eds.), Springer-Verlag, pp. 99-122, January 2008.
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Ph. Mylonas, Y. Avrithis. Multimedia Personalization. In Encyclopedia of Multimedia, B. Furht (Eds.), Springer, pp. 583-586, October 2008.
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2007

Journals

K. Rapantzikos, N. Tsapatsoulis, Y. Avrithis, S. Kollias. A Bottom-Up Spatiotemporal Visual Attention Model for Video Analysis. In IET Image Processing, vol 1, no. 2, pp. 237-248, June 2007.
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D. Vallet, P. Castells, M. Fernández, Ph. Mylonas, Y. Avrithis. Personalized Content Retrieval in Context Using Ontological Knowledge. In IEEE Transactions on Circuits and Systems for Video Technology, vol 17, no. 3, pp. 336-346, March 2007.
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Th. Athanasiadis, Ph. Mylonas, Y. Avrithis, S. Kollias. Semantic Image Segmentation and Object Labeling. In IEEE Transactions on Circuits and Systems for Video Technology, vol 17, no. 3, pp. 298 - 312, March 2007.
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Books

B. Falcidieno, M. Spagnuolo, Y. Avrithis, I. Kompatsiaris, P. Buitelaar. Semantic Multimedia. Lecture Notes in Computer Science, vol 4816, Springer, December 2007.
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Conferences

E. Spyrou, Y. Avrithis. A Region Thesaurus Approach for High-Level Concept Detection in the Natural Disaster Domain. In Proceedings of 2nd international conference on Semantics And digital Media Technologies (SAMT 2007), Genova, Italy, December 2007.
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K. Rapantzikos, G. Evangelopoulos, P. Maragos, Y. Avrithis. An Audio-Visual Saliency Model for Movie Summarization. In Proceedings of IEEE Int'l Workshop on Multimedia Signal Processing (MMSP 2007), October 2007.
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Ph. Mylonas, E. Spyrou, Y. Avrithis. Enriching a context ontology with mid-level features for semantic multimedia analysis. In Proceedings of 1st Workshop on Multimedia Annotation and Retrieval enabled by Shared Ontologies (MARESO 2007), in conjunction with SAMT, Genova, Italy, December 2007.
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Ph. Mylonas, E. Spyrou, Y. Avrithis. High-Level Concept Detection based on Mid-level Semantic Information and Contextual Adaptation. In Proceedings of 2nd International Workshop on Semantic Media Adaptation and Personalization (SMAP 2007), London, United Kingdom, December 2007.
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Evaggelos Spyrou, Yannis Avrithis et al. K-Space at TRECVid 2007. In Proceedings of 5th TRECVID Workshop (TRECVID 2007), Gaithersburg, USA, November 2007.
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E. Spyrou, Y. Avrithis. Keyframe Extraction using Local Visual Semantics in the form of a Region Thesaurus. In Proceedings of 2nd International Workshop on Semantic Media Adaptation and Personalization (SMAP 2007), London, United Kingdom, December 2007.
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K. Rapantzikos, Y. Avrithis, S. Kollias. SALIENShrink: Saliency-Based Image Denoising. In Proceedings of 14th International Conference on Image Processing (ICIP 2007), San Antonio, Texas, USA, September 2007.
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K. Rapantzikos, Y.Avrithis, S. Kollias. Spatiotemporal saliency for event detection and representation in the 3D Wavelet Domain: Potential in human action recognition. In Proceedings of ACM International Conference on Image and Video Retrieval (CIVR 2007), Amsterdam, The Netherlands, July 2007.
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E. Spyrou, Ph. Mylonas, Y. Avrithis. Semantic Multimedia Analysis based on Region Types and Visual Context. In Proceedings of 4th IFIP Conference on Artificial Intelligence Applications & Innovations (AIAI 2007), Athens, Greece, September 2007.
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E. Spyrou, P. Kapsalas, G. Tolias, Ph. Mylonas, Y. Avrithis et al. The COST292 experimental framework for TRECVID 2007. In Proceedings of 5th TRECVID Workshop (TRECVID 2007), Gaithersburg, USA, November 2007.
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Ph. Mylonas, N. Simou, V. Tzouvaras, Y. Avrithis. Towards Semantic Multimedia Indexing by Classification & Reasoning on Textual Metadata. In Proceedings of Knowledge Acquisition from Multimedia Content Workshop (KAMC 2007), in conjunction with SAMT, Genova, Italy, December 2007.
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Ph. Mylonas, Y. Avrithis. Using Multiple Domain Visual Context in Image Analysis. In Proceedings of 8th International Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS 2007), Santorini, Greece, June 2007.
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Book Chapters

E.Spyrou, Y.Avrithis. High-Level Concept Detection in Video Using a Region Thesaurus. In Emerging Artificial Intelligence Applications in Computer Engineering, IOS Press, 2007.
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E. Spyrou, Ph. Mylonas, Y. Avrithis. Semantic Multimedia Analysis based on Region Types and Visual Context. In IFIP International Federation for Information Processing, Artificial Intelligence and Innovations 2007: from Theory to Applications, Springer Boston, 2007.
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G. Th. Papadopoulos, Ph. Mylonas, V. Mezaris, Y. Avrithis, Y. Kompatsiaris. Semantic Image Analysis Optimization based on Context and Spatial Relations. In Innovations in Semantic Web Based Information Systems, A. Sheth, M. Lytras (Eds.), IGI Global, pp. 17-36, October 2007.
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2006

Journals

M. Wallace, Y. Avrithis, S. Kollias. Computationally efficient sup-t transitive closure for sparse fuzzy binary relations. In Fuzzy Sets and Systems, vol 157, no. 3, pp. 341-372, 2006.
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M. Wallace, Th. Athanasiadis, Y. Avrithis, A. Delopoulos, S. Kollias. Integrating Multimedia Archives: The Architecture and the Content Layer. In IEEE Transactions on Systems, Man, and Cybernetics, Part A, vol 36, no. 1, pp. 34 - 52, January 2006.
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G. Th. Papadopoulos, Ph. Mylonas, V. Mezaris, Y. Avrithis, I. Kompatsiaris. Knowledge-Assisted Image Analysis Based on Context and Spatial Optimization. In International Journal on Semantic Web and Information Systems, vol 2, no. 3, pp. 17-36, July 2006.
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K. Petridis, S. Bloehdorn, C. Saathoff, N. Simou, S. Dasiopoulou, V. Tzouvaras, S. Handschuh, Y. Avrithis, I. Kompatsiaris, S. Staab. Knowledge Representation and Semantic Annotation of Multimedia Content. In IEE Proceedings on Vision Image and Signal Processing, vol 153, no. 3, pp. 255-262, June 2006.
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Books

Y. Avrithis, Y. Kompatsiaris, S Staab, N. O'Connor. Semantic Multimedia. Lecture Notes in Computer Science, vol 4306, Springer-Verlag, December 2006.
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Conferences

Th. Athanasiadis, Ph. Mylonas, Y. Avrithis. A Context-based Region Labeling Approach for Semantic Image Segmentation. In Proceedings of 1st International Conference on Semantics And digital Media Technology (SAMT 2006), Athens, Greece, December 2006.
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Th. Athanasiadis, Y. Avrithis, S. Kollias. A Semantic Region Growing Approach in Image Segmentation and Annotation. In Proceedings of 1st International Workshop on Semantic Web Annotations for Multimedia (SWAMM 2006), in conjunction with WWW, Edinburgh, UK, May 2006.
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D. Vallet, M. Fernandez, P. Castells, Ph. Mylonas, Y. Avrithis. A contextual personalization approach based on ontological knowledge. In Proceedings of 17th European Conference on Artificial Intelligence - Contexts and Ontologies: Theory, Practice and Applications Workshop (ECAI 2006), Riva del Garda, Italy, August 2006.
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E. Spyrou, G. Koumoulos, Y. Avrithis et al. COST292 experiments for TRECVID 2006. In Proceedings of 4th TRECVID Workshop (TRECVID 2006), Gaithersburg, USA, November 2006.
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P. Tzouveli, Y. Avrithis, S. Kolllias. Fast Video Object Tracking using Affine Invariant Normalization. In Proceedings of 3rd IFIP Conference on Artificial Intelligence Applications & Innovations (AIAI 2006), Athens, Greece, June 2006.
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Ph. Mylonas, Th. Athanasiadis, Y. Avrithis. Image Analysis Using Domain Knowledge and Visual Context. In Proceedings of 13th International Conference on Systems, Signals and Image Processing (IWSSIP 2006), Budapest, Hungary, September 2006.
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Ph. Mylonas, Th. Athanasiadis, Y. Avrithis. Improving Image Analysis using a Contextual Approach. In Proceedings of 7th International Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS 2006), Seoul, Korea, April 2006.
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E. Spyrou, G. Koumoulos, Y. Avrithis et al. K-Space at TRECVid 2006. In Proceedings of 4th TRECVID Workshop (TRECVID 2006), Gaithersburg, USA, November 2006.
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Ph. Mylonas, D. Vallet, M. Fernandez, P. Castells and Y. Avrithis. Ontology-based Personalization for Multimedia Content. In Proceedings of 3rd European Semantic Web Conference - Semantic Web Personalization Workshop, Budva, Montenegro, June 2006.
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N. Tsapatsoulis, K. Rapantzikos, Y. Avrithis. Priority Coding for Video-telephony Applications based on Visual Attention. In Proceedings of International Mobile Multimedia Communications Conference (MobiMedia 2006), September 2006.
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D. Vallet, M. Fernandez, P. Castells, Ph. Mylonas, Y. Avrithis. Personalized Information Retrieval in Context. In Proceedings of 21st National Conference on Artificial Intelligence - 3rd International Workshop on Modeling and Retrieval of Context, Boston, USA, July 2006.
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P. Berka, Th. Athanasiadis, Y. Avrithis. Rule-based Reasoning for Semantic Image Segmentation and Interpretation. In Proceedings of 1st International Conference on Semantics And digital Media Technology (SAMT 2006), Athens, Greece, December 2006.
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E. Spyrou, G. Koumoulos, Y. Avrithis, S. Kollias. Using Local Region Semantics for Concept Detection in Video. In Proceedings of 1st International Conference on Semantics And digital Media Technology (SAMT 2006), Athens, Greece, December 2006.
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S. Dasiopoulou, G. Th. Papadopoulos, Ph. Mylonas, Y. Avrithis, I. Kompatsiaris. Using Context and a Genetic Algorithm for Knowledge-Assisted Image Analysis. In Proceedings of 1st International Conference on Semantics And Digital Media Technology (SAMT 2006), Athens, Greece, December 2006.
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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.
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Th. Athanasiadis, Ph. Mylonas, Y. Avrithis. A Context-based Region Labeling Approach for Semantic Image Segmentation. In Semantic Multimedia, 1234 (Eds.), Springer, pp. 212-225, December 2006.
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M. Wallace, Y. Avrithis, S. Kollias. Multimedia Archives and Mediators. In Encyclopedia of Multimedia, B. Furht (Eds.), Springer, 2006.
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S. Dasiopoulou, E. Spyrou, Y. Avrithis, Y. Kompatsiaris, M.G. Strintzis. Semantic Processing of Color Images. In Color Image Processing: Emerging Applications, Rastislav Lukac and Konstantinos N. Plataniotis (Eds.), CRC Press, 2006.
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2005

Conferences

K. Rapantzikos, Y. Avrithis. An enhanced spatiotemporal visual attention model for sports video analysis. In Proceedings of International Workshop on content-based Multimedia indexing (CBMI 2005), June 2005.
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N. Simou, V. Tzouvaras, Y. Avrithis, G. Stamou, S. Kollias. A Visual Descriptor Ontology for Multimedia Reasoning. In Proceedings of Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS 2005), Montreux, Switzerland, April 2005.
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D. Vallet, Ph. Mylonas, M. A. Corella, J. M. Fuentes, P. Castells, Y. Avrithis. A Semantically-Enhanced Personalization Framework for Knowledge-Driven Media Services . In Proceedings of IADIS International Conference on WWW / Internet (ICWI 2005), Lisbon, Portugal, October 2005.
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N.Simou, C.Saathoff, S.Dasiopoulou, E.Spyrou, N.Voisine, V.Tzouvaras, I.Kompatsiaris, Y.Avrithis, S.Staab. An Ontology Infrastructure for Multimedia Reasoning. In Proceedings of International Workshop Very Low Bitrate Video Coding (VLBV 2005), Sardinia, Italy, September 2005.
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K. Petridis, F. Precioso, Th. Athanasiadis, Y. Avrithis, Y. Kompatsiaris. Combined Domain Specific and Multimedia Ontologies for Image Understanding. In Proceedings of 28th German Conference on Artificial Intelligence (ΚΙ 2005), Koblenz, Germany, September 2005.
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Ph. Mylonas, Y. Avrithis. Context modelling for multimedia analysis. In Proceedings of 5th International and Interdisciplinary Conference on Modeling and Using Context (CONTEXT 2005), Paris, France, July 2005.
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E. Spyrou, H. Le Borgne, T. Mailis, E. Cooke, Y. Avrithis, N. O'Connor. Fusing MPEG-7 visual descriptors for image classiffication. In Proceedings of International Conference on Artificial Neural Networks (ICANN 2005), Warsaw, Poland, September 2005.
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E. Spyrou, G. Stamou, Y. Avrithis, S. Kollias. Fuzzy Support Vector Machines for Image Classification fusing MPEG-7 Visual Descriptors. In Proceedings of 2nd European Workshop on the Integration of Knowledge,Semantic, and Digital Media Techniques (EWIMT 2005), London, UK, November 2005.
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K. Rapantzikos, Y. Avrithis, S. Kollias. Handling Uncertainty in Video Analysis With Spatiotemporal Visual Attention. In Proceedings of IEEE International Conference on Fuzzy Systems (FUZZ 2005), May 2005.
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N. Voisine, S. Dasiopoulou, V. Mezaris, E. Spyrou, Th. Athanasiadis, I. Kompatsiaris, Y. Avrithis, M. G. Strintzis. Knowledge-Assisted Video Analysis Using A Genetic Algorithm. In Proceedings of 6th International Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS 2005), Montreux, Switzerland, April 2005.
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K. Rapantzikos, Y. Avrithis, S. Kollias. On the use of spatiotemporal visual attention for video classification. In Proceedings of Int. Workshop on Very Low Bitrate Video Coding (VLBV 2005), Sardinia, Italy, September 2005.
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S. Bloehdorn, K. Petridis, C. Saathoff, N. Simou, V.Tzouvaras, Y. Avrithis, S. Handschuh, Y. Kompatsiaris, S. Staab, M. G. Strintzis. Semantic Annotation of Images and Videos for Multimedia. In Proceedings of 2nd European Semantic Web Conference (ESWC 2005), Heraklion, Greece, May 2005.
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P. Castells, M. Fernández, D. Vallet, Ph. Mylonas, Y. Avrithis. Self-Tuning Personalized Information Retrieval in an Ontology-Based Framework. In Proceedings of First IFIP WG 2.12 & WG 12.4 International Workshop on Web Semantics (SWWS 2005), Agia Napa, Cyprus, October 2005.
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Th. Athanasiadis, V. Tzouvaras, K. Petridis, F. Precioso, Y. Avrithis, Y. Kompatsiaris. Using a Multimedia Ontology Infrastructure for Semantic Annotation of Multimedia Content. In Proceedings of 5th International Workshop on Knowledge Markup and Semantic Annotation (SemAnnot 2005), in conjunction with ISWC, Galway, Ireland, November 2005.
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Book Chapters

E. Spyrou, H. LeBorgne, T. Mailis, E. Cooke, Y. Avrithis, N. O'Connor. Fusing MPEG-7 visual descriptors for image classiffication. In Artificial Neural Networks,Part II: Formal Models and their Applications, W.Duch, J.Kacprzyk, E.Oja, and S.Zadrozny (Eds.), Springer, pp. 847-852, September 2005.
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M. Wallace, Y. Avrithis, G. Stamou, S. Kollias. Knowledge-based Multimedia Content Indexing and Retrieval. In Multimedia Content and Semantic Web: Methods, Standards and Tools, Stamou G., Kollias S. (Eds.), Wiley, August 2005.
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P. Castells, M. Fernαndez, D. Vallet, Ph. Mylonas, Y. Avrithis. Self-Tuning Personalized Information Retrieval in an Ontology-Based Framework. In On the Move to Meaningful Internet Systems, Springer, pp. 977, 2005.
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S. Bloehdorn, K. Petridis, C. Saathoff, N. Simou, V. Tzouvaras, Y. Avrithis, S. Handschuh, Y. Kompatsiaris, S. Staab, M. G. Strintzis. Semantic Annotation of Images and Videos for Multimedia Analysis. In The Semantic Web: Research and Applications, Springer, pp. 592-607, June 2005.
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2004

Conferences

Th. Athanasiadis, Y. Avrithis. Adding Semantics to Audiovisual Content: The FAETHON Project. In Proceedings of 3rd International Conference for Image and Video Retrieval (CIVR 2004), Dublin, Ireland, July 2004.
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M. Wallace, Th. Athanasiadis, Y. Avrithis, G. Stamou, S. Kollias. A mediator system for hetero-lingual audiovisual content. In Proceedings of International Conference on Multi-platform e-Publishing, Athens, Greece, November 2004.
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P. Hobson, T. May, J. Tromp, Y. Kompatsiaris, Y. Avrithis. Achieving Integration of Knowledge and Content Technologies: the aceMedia Project. In Proceedings of European Workshop on the Integration of Knowledge, Semantics and Digital Media Technology (EWIMT 2004), London, U.K., November 2004.
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M. Wallace, Y. Avrithis. Fuzzy Relational Knowledge Representation and Context in the Service of Semantic Information Retrieval. In Proceedings of IEEE International Conference on Fuzzy Systems (FUZZ-IEEE 2004), Budapest, Hungary, July 2004.
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I. Kompatsiaris, Y. Avrithis, P. Hobson, M.G. Strinzis. Integrating Knowledge, Semantics and Content for User-Centred Intelligent Media Services: the aceMedia Project. In Proceedings of Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS 2004), Lisboa, Portugal, April 2004.
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M. Wallace, Th. Athanasiadis, Y. Avrithis. Knowledge Assisted Analysis & Categorization for Semantic Video Retrieval. In Proceedings of 3rd International Conference for Image and Video Retrieval (CIVR 2004), Dublin, Ireland, July 2004.
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S. Bloehdorn, N. Simou, V. Tzouvaras, K. Petridis, S. Handschuh, Y. Avrithis, I. Kompatsiaris, S. Staab, M. G. Strintzis. Knowledge Representation for Semantic Multimedia Content Analysis and Reasoning. In Proceedings of European Workshop on the Integration of Knowledge, Semantics and Digital Media Technology (EWIMT 2004), London, U.K., November 2004.
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K. Rapantzikos, N. Tsapatsoulis, Y. Avrithis. Spatiotemporal Visual Attention Architecture for Video Analysis. In Proceedings of IEEE International Workshop On Multimedia Signal Processing (MMSP'04), September 2004.
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Book Chapters

Th. Athanasiadis, Y. Avrithis. Adding Semantics to Audiovisual Content: The FAETHON Project. In Image and Video Retrieval, Springer-Verlag, pp. 665-673, July 2004.
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P. Tzouveli, G. Andreou, G. Tsechpenakis, Y. Avrithis, S. Kollias. Intelligent Visual Descriptor Extraction from Video Sequences. In Lecture Notes in Computer Science - Adaptive Multimedia Retrieval, Springer-Verlag, pp. 132-146, 2004.
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M. Wallace, Th. Athanasiadis, Y. Avrithis. Knowledge Assisted Analysis & Categorization for Semantic Video Retrieval. In Image and Video Retrieval, Peter Enser, Kompatsiaris Y., O¢Connor N.E., et al. (Eds.), Springer, July 2004.
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2003

Journals

Y. Avrithis, G. Stamou, M. Wallace, F. Marques, P. Salembier, X. Giro, W. Haas, H. Vallant, M. Zufferey. Unified Access to Heterogeneous Audiovisual Archives. In Journal of Universal Computer Science, vol 9, no. 6, pp. 510-519, June 2003.
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Conferences

P. Tzouveli, G. Andreou, G. Tsechpenakis, Y. Avrithis, S. Kollias. Intelligent Visual Descriptor Extraction from Visual Sequences. In Proceedings of International Workshop on Adaptive Multimedia Retrieval (AMR 2003), Hamburg, Germany, September 2003.
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G. Stamou, Y. Avrithis, S. Kollias, F. Marques, P. Salembier. Semantic Unification of Heterogenous Multimedia Archives. In Proceedings of 4th European Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS 2003), London, UK, April 2003.
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Y. Avrithis, G. Stamou, M. Wallace, F. Marques, P. Salembier, X. Giro, Haas W., H. Vallant, M. Zufferey. Unified Access to Heterogeneous Audiovisual Archives. In Proceedings of 3rd International Conference on Knowledge Management (I-KNOW 2003), Graz, Austria, July 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.
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2002

Journals

A. Doulamis, N. Doulamis, Y. Avrithis, S. Kollias. A Fuzzy Video Content Representation for Video Summarization and Content-Based Retrieval (Erratum). In Signal Processing, vol 80, pp. 1049-1067, June 2002.
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Conferences

Y. Avrithis, G. Stamou, A. Delopoulos, S. Kollias. Intelligent Semantic Access to Audiovisual Content. In Proceedings of 2nd Hellenic Conference on Artificial Intelligence (SETN 2002), Thessaloniki, Greece, April 2002.
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Book Chapters

S. Ioannou, Y. Avrithis, G. Stamou, S. Kollias. Fuzzy Data Fusion For Multiple Cue Image And Video Segmentation. In Fuzzy Technologies and Applications, E. Kerre (Eds.), Springer-Verlag, May 2002.
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Y. Avrithis, G. Stamou, A. Delopoulos, S. Kollias. Intelligent Semantic Access to Audiovisual Content. In Lecture Notes in Artificial Intelligence, Springer-Verlag, pp. 215-224, April 2002.
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2001

Journals

Y. Avrithis, Y. Xirouhakis, S. Kollias. Affine-Invariant Curve Normalization for Object Shape Representation, Classification and Retrieval. In Machine Vision and Applications, vol 13, no. 2, pp. 80-94, 2001.
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N. Tsapatsoulis, Y. Avrithis, S. Kollias. Facial Image Indexing in Multimedia Databases. In Pattern Analysis and Applications, vol 4, no. 2, pp. 93-107, 2001.
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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.
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Y. Avrithis, G. Stamou. FAETHON: Unified Intelligent Access to Heterogeneous Audiovisual Content. In Proceedings of Int. Workshop on Very Low Bitrate Video Coding (VLBV 2001), Athens, Greece, October 2001.
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A. Delopoulos, S. Kollias, Y. Avrithis, W.Haas, K. Majcen. Unified Intelligent Access to Heterogeneous Audiovisual Content. In Proceedings of International Workshop in Content-Based Multimedia Indexing (CBMI 2001), Brescia, Italy, September 2001.
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PhD Thesis

Y. Avrithis. Video Sequence Analysis for Content Description, Summarization and Content-Based Retrieval. PhD Thesis, School of Electrical and Computer Engineering, National Technical University of Athens, February 2001.
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2000

Journals

A. Doulamis, N. Doulamis, Y. Avrithis, S. Kollias. A Fuzzy Video Content Representation for Video Summarization and Content-Based Retrieval. In Signal Processing Journal, vol 80, no. 6, pp. 1049-1067, June 2000.
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N. Doulamis, A. Doulamis, Y. Avrithis, K. Ntalianis, S. Kollias. Efficient Summarization of Stereoscopic Video Sequences. In IEEE Transactions on Circuits and Systems for Video Technology, vol 10, no. 4, pp. 501-517, June 2000.
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Conferences

Y. Avrithis, Y. Xirouhakis, S. Kollias. Affine-Invariant Curve Normalization for Shape-Based Retrieval. In Proceedings of International Conference on Pattern Recognition (ICPR 2000), Barcelona, Spain, September 2000.
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Y. Avrithis, N. Tsapatsoulis, S. Kollias. Broadcast News Parsing Using Visual Cues: A Robust Face Detection Approach. In Proceedings of IEEE International Conference on Multimedia and Expo (ICME 2000), New York City, NY, USA, July 2000.
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Y. Avrithis, N. Tsapatsoulis, S. Kollias. Color-Based Retrieval of Facial Images. In Proceedings of European Signal Processing Conference (EUSIPCO 2000), Tampere, Finland, September 2000.
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N.Tsapatsoulis, Y. Avrithis, S. Kollias. Face Detection for Multimedia Applications. In Proceedings of Proceedings of the International Conference on Image Processing (ICIP 2000), Vancouver, BC, Canada, September 2000.
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1999

Journals

Y. Avrithis, A. Doulamis, N. Doulamis and S. Kollias. A Stochastic Framework for Optimal Key Frame Extraction from MPEG Video Databases. In Computer Vision and Image Understanding, vol 75, no. 1/2, pp. 3-24, July 1999.
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Gabriel Tsechpenakis, Yannis Avrithis, Stefanos Kollias. Verification Report of Core Experiment on Fast Block-Matching Motion Estimation using Advanced Diamond Zonal Search with Embedded Radar. In ISO/IEC JTC1/SC29/WG11, MPEG99/M5116, October 1999.
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Books

A. Doulamis, Y. Avrithis, N. Doulamis, S. Kollias. A Genetic Algorithm for Efficient Video Content Representation. Computational Intelligence in Systems and Control, Kluwer Academic Publishers, 1999.
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Conferences

Y. Avrithis, Y. Xirouhakis, S. Kollias. Affine Invariant Representation and Classification of Object Contours for Image and Video Retrieval. In Proceedings of 3rd IMACS International Multiconference on Circuits, Systems, Communications and Computers (CSCC 1999), Athens, Greece, 1999.
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N. Doulamis, A. Doulamis, Y. Avrithis, K. Ntalianis, S. Kollias. An Optimal Framework for Summarization of Stereoscopic Video Sequences. In Proceedings of International Workshop on Synthetic - Natural Hybrid Coding and Three Dimensional Imaging (IWSNHC3DI 1999), Santorini, Greece, 1999.
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N. Doulamis, A. Doulamis, Y. Avrithis, S. Kollias. A stochastic framework for optimal key frame extraction from MPEG video databases. In Proceedings of IEEE International Workshop on Multimedia Signal Processing (MMSP 1999), Copenhagen, Denmark, 1999.
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A. Doulamis, Y. Avrithis, N. Doulamis, S. Kollias. Interactive Content-Based Retrieval in Video Databases Using Fuzzy Classification and Relevance Feedback. In Proceedings of IEEE International Conference on Multimedia Computing and Systems (ICMSC 1999), Florence, Italy, 1999.
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N. Tsapatsoulis, Y. Avrithis, S. Kollias. On the use of Radon Transform for Facial Expression Recognition. In Proceedings of 5th International Conference on Information Systems Analysis and Synthesis (ISAS 1999), Orlando, FL, USA, 1999.
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Book Chapters

Y. Avrithis, Y. Xirouhakis, S. Kollias. Affine Invariant Representation and Classification of Object Contours for Image and Video Retrieval. In Computational Intelligence and Applications, World Scientific and Engineering Society Press, pp. 342-347, July 1999.
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1998

Conferences

A. Doulamis, Y. Avrithis, N. Doulamis, S. Kollias. A Genetic Algorithm for Efficient Video Content Representation. In Proceedings of IMACS/IFAC International Symposium on Soft Computing in Engineering Applications (SOFTCOM 1998), Athens, Greece, 1998.
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Y. Avrithis, A. Doulamis, N. Doulamis, S. Kollias. An Adaptive Approach to Video Indexing and Retrieval Using Fuzzy Classification. In Proceedings of International Conference on Very Low Bitrate Video Coding (VLBV 1998), Urbana, IL, USA, 1998.
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Y. Avrithis, N. Doulamis, A. Doulamis, S. Kollias. Efficient Content Representation in MPEG Video Databases. In Proceedings of IEEE Workshop of Content-Based Access of Image and Video Libraries (CBAIVL 1998), Santa Barbara, CA, USA, 1998.
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Y. Xirouhakis, Y. Avrithis, S. Kollias. Image Retrieval and Classification Using Affine Invariant B-Spline Representation and Neural Networks. In Proceedings of IEE Colloquium on Neural Nets and Multimedia (ICNNM 1998), London, UK, 1998.
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Y. Avrithis, A. Delopoulos, G. Papageorgiou. Ultrasonic Array Imaging Using CDMA Techniques. In Proceedings of IX European Signal Processing Conference (EUSIPCO 1998), Rhodes, Greece, 1998.
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N. Doulamis, A. Doulamis, Y. Avrithis, S. Kollias. Video Content Representation Using Optimal Extraction of Frames and Scenes. In Proceedings of IEEE International Conference on Image Processing (ICIP 1998), Chicago, IL, USA, 1998.
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1997

Conferences

Y. Avrithis, S. Kollias. Fuzzy Image Classification Using Multiresolution Neural Networks with Applications to Remote Sensing. In Proceedings of 13th International Conference on Digital Signal Processing (DSP 1997), Santorini, Greece, July 1997.
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A. Doulamis, Y. Avrithis, N. Doulamis, S. Kollias. Indexing and Retrieval of the Most Characteristic Frames / Scenes in Video Databases. In Proceedings of Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS 1997), Louvain-la-Neuve, Belgium, 1997.
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1994

Master Thesis

Y. Avrithis. Investigating the Capacity of a Cellular CDMA System. Master Thesis, Department of Electrical and Electronic Engineering, Imperial College of Science, Technology and Medicine, University of London, October 1994.
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1993

Conferences

Y. Avrithis, A. Delopoulos, S. Kollias. An Efficient Scheme for Invariant Optical Character Recognition Using Triple Correlations. In Proceedings of Intl. Conf. on DSP and II Intl. Conf. on Comp. Applications to Engineering Systems (CAES 1993), Nicosia, Cyprus, July 1993.
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Diploma Thesis

Y. Avrithis. Fuzzy Logic Processor for Control Systems. Diploma Thesis, School of Electrical and Computer Engineering, National Technical University of Athens, September 1993.
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