Katsouros, Vassilis
RESEARCH

Vassilis Katsouros

Personal Information

Position: Principal Researcher
Phone or fax: +30 210 6875305

CV data

Vassilis Katsouros received his M.Eng. degree in Electrical and Computer Engineering from the National Technical University of Athens (NTUA), Greece, in 1992.  In 1993 he obtained the M.Sc. with Distinction in Communications and Signal Processing from Imperial College of Science Technology and Medicine, University of London, UK.  From 1993 until 1997 he worked as research assistant in the interest group “Adaptive Control and Stochastic Systems” at the Interdisciplinary Research Centre for Process Systems Engineering (IRC-PSE) of Imperial College.  He was responsible for the research project “Statistical Analysis, Stochastic Modelling and Control of Flotation Processes”. During this period he gave tutorial lessons on electronics, mathematics and control methods in the Electrical Engineering Department, Imperial College. In 1997 received his Ph.D. degree from Imperial College. 

Since 1998 he has been working at the Institute for Language and Speech Processing (ILSP) and since 2000 was responsible of the Quality Assurance Office. In 2001 he was among the founding members of LibrisTech, the first spin-off company of ILSP, where he acted as managing director until September 2004.

In September 2004 he has elected Reseacher at ILSP and in December 2007 he was promoted to Senior Reseacher. Since July 2009 he has been elected member of the Scientific Board and has been appointed Deputy Director of ILSP for the period September 2009 - October 2010.

He has been supervised the quality assurance of more that 30 commercial software products and 6 web-portals developed by ILSP for third parties.  He has been involved in a numerous research projects at a national and European level. From 2000 to 2002 he was the scientific and administrative coordinator of the EU-funded FP5-IST project MYTHE. Since 2005 he has been working on projects that involve digitization and documentation of theatrical archives, archives of byzantine documents and digital archives of libraries. He has been involved in the supervision of 4 PhDs on text segmentation on image documents, handwriting recognition of mathematical symbols, speaker indexing and music transcription.

His research interests involve signal processing, probability and statistics, game theory, image processing and pattern recognition. He is a member of IEEE since 1992, ACM since 1999 and Technical Chamber of Greece since 1992.  Since 1999 he is a certified market maker/trader of the Derivatives Market at the Athens Exchange.

Publications

  • Katsouros, V., Papavassiliou, V., Simistira, F. & Basilis Gatos. (2016). Recognition of Greek Polytonic on Historical Degraded Texts Using HMMs. In, pages 346-351. [...] 
  • Simistira, F., Adnan Ul-Hassan, Papavassiliou, V., Basilis Gatos, Katsouros, V. & Marcus Liwicki. (2015). Recognition of historical Greek polytonic scripts using LSTM networks. In, pages 766-770. [...] 
  • Basilis Gatos, Nikos Stamatopoulos, Giorgos Sfikas, George Rekatsinas, Papavassiliou, V., Simistira, F. et al. (2015). GRPOLY-DB: An old Greek polytonic document image database.. In, pages 646-650. [...] 
  • Simistira, F., Papavassiliou, V., Katsouros, V. & Carayannis, G. (2014). Recognition of Spatial Relations in Mathematical Formulas. In, pages 164-168. [...] 
  • Gkiokas, A., Katsouros, V. & Carayannis, G. (2014). Deploying Deep Belief Nets for content based audio music similarity. In The Fifth International Conference on Information, Intelligence, Systems and Applications ( IISA 2014 ). [...] 
  • Katsouros, V., Papavassiliou, V. & Emmanouilidis, C. (2013). A Bayesian Approach for Maintenance Action Recommendation. International Journal of the PHM Society, 4 (2)(034). [...] 
  • Simistira, F., Papavassiliou, V., Katsouros, V. & Carayannis, G. (2013). Structural analysis of online handwritten mathematical symbols based on support vector machines. In Document Recognition and Retrieval XX. San Francisco, USA. [...] 
  • Papavassiliou, V., Simistira, F., Katsouros, V. & Carayannis, G. (2012). A Morphology based Approach for Binarization of Handwritten Documents. In 13th International Conference on Frontiers in Handwriting Recognition, pages 575-579. Bari, Italy. [...] 
  • Simistira, F., Papavassiliou, V., Katsouros, V. & Carayannis, G. (2012). A System for Recognition of On-Line Handwritten Mathematical Expressions. In 13th International Conference on Frontiers in Handwriting Recognition, pages 193-198. Bari, Italy. [...] 
  • Gkiokas, A., Katsouros, V., Carayannis, G. & Stafylakis, T. (2012). Music Tempo Estimation and Beat Tracking by Applying Source Separation and Metrical Relations. In Proceedings of the 37th IEEE International Conference on Acoustics, Speech and Signal Processing. Kyoto, Japan. [...] 
  • Gkiokas, A., Papavassiliou, V., Katsouros, V. & Carayannis, G. (2012). Deploying Nonlinear Image Filters to Spectrogram for Harmonic/Percussive Separation. In 15th International Conference on Digital Audio Effects. York, UK. [...] 
  • Gkiokas, A., Katsouros, V. & Carayannis, G. (2012). Recuding Tempo Octave Errors by Periodicity Vector Coding and SVM Learning. In Proceedings of the 13th International Conference on Music Information Retrieval. Porto, Portugal. [...] 
  • Stafylakis, T., Anguera, X., Katsouros, V. & Carayannis, G. (2011). Closed-form expressions vs. BIC: A comparison for speaker clustering. In Proceedings of 2011 IEEE International Conference on Acoustics Speech and Signal Processing (ICASSP). Prague, Czech Republic. [...] 
  • Stafylakis, T. & Katsouros, V (2011). A Review of Recent Advances in Speaker Diarization with Bayesian Methods. In Ivo Ipsic (editor), Speech and Language Technologies. InTech. [...] 
  • Katsouros, V. & Papavassiliou, V (2011). Segmentation of Handwritten Document Images into Text Lines. Image Segmentation. INTECH OPEN ACCESS PUBLISHER. [...] 
  • Gkiokas, A., Katsouros, V. & Carayannis, G. (2010). Tempo Induction Using Filterbank Analysis and Tonal Features. In Proceedings of the 11th International Conference on Music Information Retrieval. Utrecht, Netherlands. [...] 
  • Stafylakis, T., Katsouros, V. & Carayannis, G. (2010). Speaker Clustering via the mean shift algorithm. In Proceedings of the 2010 Speaker and Language Recognition Workshop (Speaker Odyssey), pages 186 - 193. Brno, Czech Republic. [...] 
  • Stafylakis, T., Tzimiropoulos, G., Katsouros, V. & Carayannis, G. (2010). A new penalty term for the BIC with respect to speaker diarization. In Proceedings of 2010 IEEE International Conference on Acoustics Speech and Signal Processing (ICASSP), pages 4978-4981. Dallas, Texas, USA. [...] 
  • Stafylakis, T., Katsouros, V. & Carayannis, G. (2010). The Segmental Bayesian Information Criterion and Its Applications to Speaker Diarization. Selected Topics in Signal Processing, IEEE Journal of, 4(1), 857 - 866. [...] 
  • Papavassiliou, V., Stafylakis, T., Katsouros, V. & Carayannis, G. (2010). Handwritten Document Image Segmentation into Text Lines and Words. Pattern Recognition, 43(1), 369-377. [...] 
  • Papavassiliou, V., Katsouros, V. & Carayannis, G. (2010). A Morphological Approach for Text-Line Segmentation in Handwritten Documents. In in proceedings of the 12th International Conference on Frontiers in Handwriting Recognition 2010. Kolkata, India : IEEE computer society CPS. [...] 
  • Stafylakis, T., Katsouros, V. & Carayannis, G. (2009). Redefining the Bayesian Information Criterion for speaker diarization. In Proceedings of Interspeech. Brighton, UK. [...] 
  • Simistira, F., Katsouros, V. & Carayannis, G. (2008). A Template Matching Distance for Recognition of On-Line Mathematical Symbols. In Fotini Simistira, Vassilis Katsouros & George Carayannis (editors), 11th International Conference on Frontiers in Handwriting Recognition (ICFHR 2008). Quebec, Canada. [...] 
  • Demiros, I., Carayannis, G., Antonopoulos, V., Kambourakis, G., Katsouros, V., Kolevris, P. et al. (2008). PANOPTIS: a System for Intelligent Monitoring of the Hellenic Broadcast Sector. In Proceedings of the 19th International Workshop on Database and Expert Systems Application, 2008. DEXA '08., pages 605 - 609. Turin. [...] 
  • Stafylakis, T., Katsouros, V. & Carayannis, G. (2007). Efficient combination of parametric spaces, models and metrics for speaker diarization. In Proceedings of the IEEE Workshop on Automatic Speech Recognition & Understanding, ASRU 2007., pages 256 - 261. Kyoto, Japan. [...] 
  • Papavassiliou, V., Stafylakis, T., Katsouros, V. & Carayannis, G. (2007). A Parametric Spectral-Based Method for Verification of Text in Videos. In In proceedings of the 9-th International Conference on Document Analysis and Recognition, 2007. ICDAR 2007., pages 879 - 883. Curitiba, Parana, Brazil. [...] 
  • Stafylakis, T., Papavassiliou, V., Katsouros, V. & Carayannis, G. (2007). Robust Text-Line and Word Segmentation for Handwritten Document Images. In In proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing, 2008. ICASSP 2008., pages 3393 - 3396. Las Vegas, NV. [...] 
  • Fotinea, S. & Katsouros, V. (2004). Eνότητα 4 – Υπολογιστικά Φύλλα - Ελληνική Έκδοση Excel 2002. LIBRIS-TECH. [...] 
  • Antoniou-Kritikou, I. & Katsouros, V (2004). Designing a validation plan of a CALL application: Key factors of success. In M. Kelleher, A. Haldane & E. Kruizinga (editors), The future of technology enhanced learning: Insights from the European research community. [...] 
  • Fotinea, S. & Katsouros, V. (2003). Eνότητα 4 – Λογιστικά Φύλλα - Ελληνική Έκδοση Excel 2000. LIBRIS-TECH. [...] 
  • Antonopoulou, Z., Carayannis, G., Charalabopoulou, F., Katsouros, V., Paschalis, S., Simistira, F. et al. (2002). MYTHE: A storyline-based language learning environment for young children. In EUROCALL 2002-Ιnternational Conference-Networked language learning- a link missing?. Jyvaskyla, Finland. [...] 
  • Antoniou-Kritikou, I. & Katsouros, V. (2002). Mythe – Multilingual Platform for Teaching First and Second Language in parallel to children from 6 to 8 years old [in Greek]. In The exploitation of New Technologies in teaching Greek as a foreign language [in Greek], pages 53-56. Παλλήνη. [...] 
  • Antoniou-Kritikou, I., Αντωνοπούλου, Ζ., Katsouros, V., Κωνσταντάκης, Ν., Πασχάλης, Σ., Simistira, F. et al. (2002). Interculturality and multilinguality in the framework of the European project «ΜΥΤΗΕ» (Multimedia Young-children’s Thesaurus for Educational Purposes) [in Greek]. In Γεωργογιάννης Π. (editor), 4rth International Conference: Greek as a second or foreign language: an intercultural approach [in Greek], pages 183-195. Πάτρα. [...] 
  • Antoniou-Kritikou, I., Carayannis, G. & Katsouros, V. (2001). A multimedia Storyboard as an Object and as a Starting Point for Language Learning. In EDEN 10th Anniversary Conference: Learning without limits, pages 313-318. Stockholm. [...]