athanasioskoutras
about me publications teaching research projects supervision leadership talks & presentations
athanasioskoutras

Books

2023

  • Koutras, A., Alexandraki, C., Zarouchas, T., Zervas, P., & Chatziantoniou, P. (2023). Επεξεργασία και ανάλυση ήχου, ομιλίας και μουσικής. Κάλλιπος, Ανοικτές Ακαδημαϊκές Εκδόσεις. ISBN: 978-618-228-115-4. https://repository.kallipos.gr/handle/11419/10814

Journal Articles

2024

  • Anyfantis, D., Koutras, A., Apostolopoulos, G., & Christoyianni, I. (2024). Revealing Occult Malignancies in Mammograms Through GAN-Driven Breast Density Transformation. Electronics, 13(23), 4826. https://doi.org/10.3390/electronics13234826

2023

  • Anyfantis, D., Koutras, A., Apostolopoulos, G., & Christoyianni, I. (2023). Breast Density Transformations Using CycleGANs for Revealing Undetected Findings in Mammograms. Signals, 4(2), 421-438. https://doi.org/10.3390/signals4020022

2021

  • Apostolopoulos, G., Koutras, A., Anyfantis, D., Christoyianni, I., & Dermatas, E. (2021). Improving the Diagnosis of Breast Cancer by Combining Visual and Semantic Feature Descriptors. In Proceedings of the 22nd Engineering Applications of Neural Networks Conference (Vol. 3, pp. 83-94).

2016

  • Koutras, A., Panagopoulos, A., & Nikas, I. A. (2016). Forecasting Tourism Demand Using Linear and Nonlinear Prediction Models. Academica Turistica - Tourism and Innovation Journal, 9(1), 85-98.

2008

  • Koutras, A., Kostopoulos, G. K., & Ioannides, A. A. (2008). Exploring the variability of single trials in somatosensory evoked responses using constrained source extraction and RMT. IEEE Transactions on Bio-medical Engineering, 55(3), 957-969. https://doi.org/10.1109/TBME.2008.915708

2002

  • Christoyianni, I., Koutras, A., Dermatas, E., & Kokkinakis, G. (2002). Computer aided diagnosis of breast cancer in digitized mammograms. Computerized Medical Imaging and Graphics, 26(5), 309-319. https://doi.org/10.1016/S0895-6111(02)00031-9

  • Koutras, A., Dermatas, E., & Kokkinakis, G. (2002). Blind separation of non-linear convolutive mixtures for robust speech recognition. ACTA Press - International Journal of Control and Intelligent Systems, 30(2), 83-90.

  • Koutras, A., Dermatas, E., & Kokkinakis, G. (2002). Blind Speech separation for solving the cocktail party problem in real room environments. Journal of Information Technology and Multimedia Systems (Info-M Journal), 1(2), 29-32.

2000

  • Koutras, A., Dermatas, E., & Kokkinakis, G. (2000). Blind separation of speakers in noisy environments: A neural network approach. Neural Network World Journal, 10(4), 619-630.

Book Chapters

2023

  • Nikas, I. A., Koutras, A., & Panagopoulos, A. (2023). Dynamic Areas of Interest Inside an Urban Destination Using Visitors’ Geolocation. In V. Katsoni (Ed.), Tourism, Travel, and Hospitality in a Smart and Sustainable World (pp. 291-306). https://doi.org/10.1007/978-3-031-26829-8_18

2022

  • Nikas, I. A., Koutras, A., Panagopoulos, A., & Vasileiadis, A. (2022). Exploring Tourists’ Food and Beverage Spots in an Urban Destination Using a Spatial–temporal Approach. In V. Katsoni & A. C. Şerban (Eds.), Transcending Borders in Tourism Through Innovation and Cultural Heritage (pp. 977-989). https://doi.org/10.1007/978-3-030-92491-1_58

2019

  • Koutras, A., Nikas, I. A., & Panagopoulos, A. (2019). Towards Developing Smart Cities: Evidence from GIS Analysis on Tourists’ Behavior Using Social Network Data in the City of Athens. In V. Katsoni & M. Segarra-Oña (Eds.), Smart Tourism as a Driver for Culture and Sustainability (pp. 407-418). https://doi.org/10.1007/978-3-030-03910-3_28

2016

  • Koutras, A., Panagopoulos, A., & Nikas, I. A. (2016). Predicting Tourism Demand in the Western Greece Region Using Independent Component Analysis. In V. Katsoni & A. Stratigea (Eds.), Tourism and Culture in the Age of Innovation (pp. 361-375). https://doi.org/10.1007/978-3-319-27528-4_25

  • Koutras, A., Panagopoulos, A., & Nikas, I. A. (2016). Evaluating the Performance of Linear and Nonlinear Models in Forecasting Tourist Occupancy in the Region of Western Greece. In V. Katsoni & A. Stratigea (Eds.), Tourism and Culture in the Age of Innovation (pp. 377-391). https://doi.org/10.1007/978-3-319-27528-4_26

2001

  • Koutras, A., Dermatas, E., & Kokkinakis, G. (2001). Neural Network Based Blind Source Separation of Non-linear Mixtures. In G. Goos, J. Hartmanis, J. Van Leeuwen, G. Dorffner, H. Bischof, & K. Hornik (Eds.), Artificial Neural Networks — ICANN 2001 (Vol. 2130, pp. 561-567). https://doi.org/10.1007/3-540-44668-0_79

  • Christoyianni, I., Koutras, A., Dermatas, E., & Kokkinakis, G. (2001). Breast Tissue Classification in Mammograms Using ICA Mixture Models. In G. Goos, J. Hartmanis, J. Van Leeuwen, G. Dorffner, H. Bischof, & K. Hornik (Eds.), Artificial Neural Networks — ICANN 2001 (Vol. 2130, pp. 554-560). https://doi.org/10.1007/3-540-44668-0_78

  • Koutras, A., Christoyianni, I., Dermatas, E., & Kokkinakis, G. (2001). Feature Extraction in Digital Mammography: An Independent Component Analysis Approach. In G. Goos, J. Hartmanis, J. Van Leeuwen, J. Mira, & A. Prieto (Eds.), Bio-Inspired Applications of Connectionism (Vol. 2085, pp. 794-801). https://doi.org/10.1007/3-540-45723-2_96

Conference Papers

2021

  • Apostolopoulos, G., Koutras, A., Anyfantis, D., & Christoyianni, I. (2021). A Comparative Analysis of Breast Cancer Diagnosis by Fusing Visual and Semantic Feature Descriptors. In 2021 IEEE 21st International Conference on Bioinformatics and Bioengineering (BIBE) (pp. 1-6). https://doi.org/10.1109/BIBE52308.2021.9635481

2020

  • Apostolopoulos, G., Koutras, A., Anyfantis, D., Christoyianni, I., & Dermatas, E. (2020). Fusing Low-Level Visual Features and High-Level Semantic Features for Breast Cancer Diagnosis in Digital Mammograms. In 2020 IEEE 20th International Conference on Bioinformatics and Bioengineering (BIBE) (pp. 877-883). https://doi.org/10.1109/BIBE50027.2020.00149

2018

  • Koutras, A., & Kostopoulos, G. K. (2018). EEG-Based Person Identification Using Rhythmic Brain Activity During Sleep. In Artificial Neural Networks and Machine Learning – ICANN 2018 (Vol. 11141, pp. 682-692). https://doi.org/10.1007/978-3-030-01424-7_67

2017

  • Apostolopoulos, G., Koutras, A., Christoyianni, I., & Dermatas, E. (2017). A new method for breast cancer identification using multi-modal features in quaternionic form. In 2017 25th European Signal Processing Conference (EUSIPCO) (pp. 56-60). https://doi.org/10.23919/EUSIPCO.2017.8081168

  • Koutras, A. (2017). Song Emotion Recognition Using Music Genre Information. In Speech and Computer (Vol. 10458, pp. 669-679). https://doi.org/10.1007/978-3-319-66429-3_67

  • Zouridis, I., Koupparis, A., Stavrinou, M., Kokkinos, V., Sakellariou, D., & Koutras, A. (2017). A High Resolution EEG Human Sleep Dataset. Hellenic Society for Neuroscience.

2016

  • Koutras, A., Zouridis, I., Giannakopoulou, A., & Kostopoulos, G. K. (2016). Comparison of sleep spindles’ characteristics in descending compared to ascending slope of the nrem/rem sleep cycle.

  • Zouridis, I., Koutras, A., & Kostopoulos, G. K. (2016). Are sleep spindles and K-complexes related to cardiac activity?

  • Apostolopoulos, G., Koutras, A., Christoyianni, I., & Dermatas, E. (2016). Computer Aided Diagnosis of Mammographic Tissue Using Shapelets in Quaternionic Representation. In XIV Mediterranean Conference on Medical and Biological Engineering and Computing 2016 (Vol. 57, pp. 222-227). https://doi.org/10.1007/978-3-319-32703-7_45

2014

  • Apostolopoulos, G., Koutras, A., Christoyianni, I., & Dermatas, E. (2014). Computer Aided Classification of Mammographic Tissue Using Shapelets and Support Vector Machines. In Artificial Intelligence: Methods and Applications (Vol. 8445, pp. 510-520). https://doi.org/10.1007/978-3-319-07064-3_44

2006

  • Koutras, A., Christoyianni, I., Georgoulas, G., & Dermatas, E. (2006). Computer Aided Classification of Mammographic Tissue Using Independent Component Analysis and Support Vector Machines. In Artificial Neural Networks – ICANN 2006 (Vol. 4132, pp. 568-577). https://doi.org/10.1007/11840930_59

  • Koutras, A., Kostopoulos, G. K., & Ioannides, A. A. (2006). Single trial analysis of somatosensory evoked responses using constrain ICA.

  • Tsatsou, K., & Koutras, A. (2006). Analysing the Dynamic Relations of Sympathetic Skin Response and Somatosensory ERP Activity.

  • Koutras, A., & Georgoulas, G. (2006). Robust Cardiotocogram Prediction using Independent Component Analysis.

2002

  • Koutras, A. (2002). Blind separation of non-linear convolved speech mixtures. In IEEE International Conference on Acoustics Speech and Signal Processing (pp. I-913-I-916). https://doi.org/10.1109/ICASSP.2002.5743888

  • Koutras, A., & Dermatas, E. (2002). Robust speech recognition in a high interference real room environment using blind speech extraction. In 2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (pp. 167-171). https://doi.org/10.1109/ICDSP.2002.1027867

  • Christoyianni, I., Koutras, A., & Dermatas, E. (2002). Computer aided classification of mammographic tissue using independent component analysis. In 2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (pp. 163-166). https://doi.org/10.1109/ICDSP.2002.1027865

  • Koutras, A., & Dermatas, E. (2002). Blind Speech separation for solving the cocktail party problem in real room environments. (pp. 41-44).

2001

  • Koutras, A., Dermatas, E., & Kokkinakis, G. (2001). Blind speech separation of moving speakers using hybrid neural networks. In 7th European Conference on Speech Communication and Technology (Eurospeech 2001) (pp. 997-1000). https://doi.org/10.21437/Eurospeech.2001-287

  • Koutras, A., Dermatas, E., & Kokkinakis, G. (2001). Improving simultaneous speech recognition in real room environments using overdetermined blind source separation. In 7th European Conference on Speech Communication and Technology (Eurospeech 2001) (pp. 1009-1012). https://doi.org/10.21437/Eurospeech.2001-290

  • Koutras, A., Christoyianni, I., Nokas, G., Georgoulas, G., & Stylios, C. (2001). Linear and Nonlinear approaches for Cardiotocographic Data Prediction. (pp. 336-344).

  • Nokas, G., Koutras, A., Christoyianni, I., Georgoulas, G., Stylios, C., & Groumpos, P. (2001). Prediction of Missing data in Cardiotocograms using Expectation Maximization Algorithm. (pp. 354-362).

  • Koutras, A., Dermatas, E., & Kokkinakis, G. (2001). Blind Speech Separation Using Wavelet Decomposition. (pp. 146-149).

  • Christoyianni, I., Koutras, A., Dermatas, E., & Kokkinakis, G. (2001). Neural Classification of Breast Tissue in Mammograms: Linear Analysis in Texture Feature Space. (pp. 69-73).

  • Koutras, A., Dermatas, E., & Kokkinakis. (2001). Overdetermined Blind Speech Separation. (pp. 117-120).

2000

  • Koutras, A., Dermatas, E., & Kokkinakis, G. (2000). Blind separation of speakers in noisy environments: A neural network approach.

  • Koutras, A., Dermatas, E., & Kokkinakis, G. (2000). Simultaneous speech recognition in noisy reverberant environments. (pp. 288-292).

  • Koutras, A., Dermatas, E., & Kokkinakis, G. (2000). Blind speech separation of moving speakers in real reverberant environments. In 2000 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Vol. 2, pp. II1133-II1136). https://doi.org/10.1109/ICASSP.2000.859164

1999

  • Koutras, A., Dermatas, E., & Kokkinakis, G. (1999). Blind signal separation and speech recognition in the frequency domain. In ICECS'99. Proceedings of ICECS ‘99. 6th IEEE International Conference on Electronics, Circuits and Systems (Vol. 1, pp. 427-430). https://doi.org/10.1109/ICECS.1999.812314

  • Koutras, A., Dermatas, E., & Kokkinakis, G. (1999). Recognizing simultaneous speech: a genetic algorithm approach. In 6th European Conference on Speech Communication and Technology (Eurospeech 1999) (pp. 2551-2554). https://doi.org/10.21437/Eurospeech.1999-560

1998

  • Koutras, A., Dermatas, E., & Kokkinakis, G. (1998). Continuous Speech Recognition in a Multi-simultaneous-speaker environment using decorrelation filtering in the frequency domain. (pp. 253-256).

  • Koutras, A., Dermatas, E., & Kokkinakis, G. (1998). Speech Recognition in a real room and multi-simultaneous-speaker environment. (pp. 251-256).

1997

  • Koutras, A., Dermatas, E., & Kokkinakis, G. (1997). Speech recognition through an omni-directional microphone in a multi-simultaneous-speaker environment. (pp. 99-104).

Theses

2002

  • Koutras, A. (2002). Διαχωρισμός και Αναγνώριση Ομιλίας σε Περιβάλλον Πολλαπλών Ομιλιών [PhD Thesis]. University of Patras.

1996

  • Koutras, A., Christoyianni, I., & Athanasakis, I. (1996). ΠΟΛΥΜΝΙΑ: Ανάπτυξη Συστήματος Τηλε-εκπαίδευσης [Diploma Thesis]. University of Patras.