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2026
E. Polychronakis, A. Kannan, J. Campbell, M. Moghaddam, P. Tsakalides,
G. Tsagkatakis, Multi-Source Uncertainty Aware Fusion for Soil Moisture Estimation, IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2026
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2026
A. Kannan, A. Melebari, G. Tsagkatakis, K. Nelson, V. Ravindra, S. Roy-Singh, C. Ruf, M. Moghaddam, Physics-Based GNSS-Reflectometry Inverse Modeling Using Automatic Differentiation For Soil Moisture Retrieval, IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2026
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2026
G. Stamatakis, G. Tsagkatakis, and N. Petroulakis, “A Deep Reinforcement Learning Approach to Active Channel Sounding in 6G Networks”. IEEE Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit), 2026
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2026
S. Koutoupis, M.A. Zervou, K. Kontras, M. De Vos, P. Tsakalides,
G. Tsagkatakis, "The More, the Merrier: Contrastive Fusion for Higher-Order Multimodal Alignment," IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2026. (Highlight paper)
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2025
A. Kannan, A. Melebari,
G. Tsagkatakis, A. Farguell, K. Nelson, A. Kochanski, V. Ravindra, S. Nag, C. Ruf, M. Moghaddam, "Enhanced Mapping of Wildfire-Burned Areas using GNSS-Reflectometry Raw Intermediate Frequency Data," IEEE International Geoscience and Remote Sensing Symposium (IGARSS), pp. 3106–3110, 2025
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2025
A. Kannan, A. Melebari,
G. Tsagkatakis, A. Farguell, K. Nelson, A. Kochanski, V. Ravindra, S. Nag, C. Ruf, M. Moghaddam, "Enhancements to Mapping Wildfire Burned Areas using GNSS-Reflectometry Raw Intermediate Frequency Data," IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2025
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2025
G. Tsagkatakis, A. Melebari, J.D. Campbell, A. Kannan, P. Shokri, E. Hodges, M. Moghaddam, P. Tsakalides, "Fusion of Forecasting and Retrieval for Uncertainty Aware Soil Moisture Estimation," IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2025
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2025
I. Konidakis, K. Panayidou,
G. Tsagkatakis, P. Tsakalides, "Uncertainty-Aware Flood Segmentation from Sentinel-2 Observations with Conformal Prediction," IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2025
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2024
G. Tsagkatakis, A. Melebari, J.D. Campbell, E. Hodges, M. Moghaddam, “Quantifying Uncertainty in Machine Learning Based Soil Moisture Retrieval From GNSS-R Measurements,” IEEE International Conference on Electromagnetics in Advanced Applications (ICEAA), 2024
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2024
A. Kannan,
G. Tsagkatakis, M. Moghaddam, “Physics-Constrained Deep Learning Models for Microwave Retrieval of High-Resolution Soil Moisture,” IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2024
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2024
G. Tsagkatakis, A. Melebari, R. Akbar, J.D. Campbell, E. Hodges, M. Moghaddam, “Uncertainty Quantification in Machine Learning Based Retrieval of Soil Moisture from GNSS-R Observations,” IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2024
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2024
A. Kannan, A. Melebari,
G. Tsagkatakis, K. Nelson, V. Ravindra, S. Nag, M. Moghaddam, “Mapping Wildfire Burned Area Using GNSS-Reflectometry in Densely Vegetated Regions with Complex Topography: A Machine Learning Approach”, IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2024
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2024
A. Aidini,
G. Tsagkatakis, P. Tsakalides, “Unsupervised Change Detection on Multi-Temporal Satellite Images Using Tensor Decomposition Learning, IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2024
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2024
G. Tsagkatakis, M. Moghaddam, P. Tsakalides, “Soil Moisture Retrieval Using in Situ and Data Simulation Regularized Deep Learning Models,” IEEE International Geoscience and Remote Sensing Symposium, (IGARSS),2024
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2024
E. Kariotakis,
G. Tsagkatakis, P. Tsakalides, A. Kyrillidis, “Leveraging Sparse Input and Sparse Models: Efficient Distributed Learning in Resource-Constrained Environments,” Conference on Parsimony and Learning, PMLR, 2024
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2023
S. Vellas, M. Bernou,
G. Tsagkatakis, P. Tsakalides, N. Nikolopoulos-Anastasiadis, “A Dual Camera System with AI-enabled Imaging Control for Earth Observation Applications: A Feasibility Study,” IEEE European Data Handling & Data Processing Conference (EDHPC), 2023
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2023
E. Troullinou,
G. Tsagkatakis, A. Losonczy, P. Poirazi, P. Tsakalides, “A Generative Neighborhood-Based Deep Autoencoder with an Extended Loss Function for Robust Imbalanced Classification," 57th IEEE Asilomar Conference on Signals, Systems, and Computers,2023
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2023
A. Aidini,
G. Tsagkatakis, N. D. Sidiropoulos, P. Tsakalides, “Few-Shot Classification Using Tensor Completion,” 57th IEEE Asilomar Conference on Signals, Systems, and Computers, 2023
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2023
G. Tsagkatakis, A. Melebari, R. Akbar, J.D. Campbell, E. Hodges, M. Moghaddam, “Deep Generative Regression Models for Soil Moisture Retrieval From GNSS-R Observations,” IEEE International Conference on Electromagnetics in Advanced Applications (ICEAA),2023
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2023
A. Kannan,
G. Tsagkatakis, M. Moghaddam, “A new approach for downscaling soil moisture by merging conditional adversarial networks and physics-based passive microwave retrieval”, IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2023
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2023
A. Kannan,
G. Tsagkatakis, R. Akbar, D. Selva, V. Ravindra, R. Levinson, “Forecasting Soil Moisture Using a Deep Learning Model Integrated with Passive Microwave Retrieval,” IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2023
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2022
M. Giannopoulos,
G. Tsagkatakis, and P. Tsakalides, “4D Convolutional Neural Networks for Multi-Spectral and Multi-Temporal Remote Sensing Data Classification,” International Conference on Acoustics, Speech, and Signal Processing (ICASSP ‘22), Singapore, May 2022
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2021
G. Tsagkatakis, M. Moghaddam, and P. Tsakalides, "Deep Multi-Modal Satellite and in-situ Observation Fusion for Soil Moisture Retrieval," IEEE International Geoscience and Remote Sensing Symposium (IGARSS ‘21), Brussels, Belgium, July 2021
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2021
G. Tsagkatakis, S. Nikolidakis, E. Petra, A. Kapantagakis, K. Grigorakis, G. Katselis, N. Vlahos, and P. Tsakalides, "Knowledge Distillation from Multispectral Images to RGB for Fish Freshness Estimation," 2021 IS&T International Symposium on Electronic Imaging, Food and Agricultural Imaging Systems, Burlingame, USA, January 2021
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2020
G. Tsagkatakis, M. Moghaddam, and P. Tsakalides, "Multi-Temporal Convolutional Neural Networks for Satellite-Derived Soil Moisture Observation Enhancement," IEEE International Geoscience and Remote Sensing Symposium (IGARSS ‘20), Waikoloa, Hawaii, July 2020
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2020
Α. Aidini,
G. Tsagkatakis, and P. Tsakalides, “Quantized Tensor Robust Principal Component Analysis,” 45th International Conference on Acoustics, Speech, and Signal Processing (ICASSP ‘20), Barcelona, May 2020
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2020
Α. Aidini,
G. Tsagkatakis, and P. Tsakalides, "Tensor Dictionary Learning with Representation Quantization for Remote Sensing Observation Compression," Data Compression Conference (DCC ‘20), Cliff Lodge, Snowbird, UT, March 2020
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2020
G. Tsagkatakis, S. Nikolidakis, E. Petra, A. Kapantagakis, K. Grigorakis, G. Katselis, N. Vlahos, and P. Tsakalides, “Fish Freshness Estimation through Analysis of Multispectral Images with Convolutional Neural Networks,” IS&T International Symposium on Electronic Imaging, Food and Agricultural Imaging Systems, Burlingame, CA, January 2020
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2019
A. Pentari,
G. Tsagkatakis, K. Marias, G.C. Manikis, N. Kartalis, N. Papanikolaou and P. Tsakalides, “Sparse Representations on DW-MRI: A study on pancreas”, IEEE International Conference on BioInformatics and BioEngineering (BIBE), Athens, October 2019
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2019
A. Aidini,
G. Tsagkatakis, and P. Tsakalides, “Compression of High-Dimensional Multispectral Image Time Series Using Tensor Decomposition Learning”, 27th European Signal Processing Conference (EUSIPCO), A Coruña, Spain, September 2019
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2019
M. Aspri,
G. Tsagkatakis, and P. Tsakalides, “On Realizing Distributed Deep Neural Networks: An Astrophysics Case Study”, 27th European Signal Processing Conference (EUSIPCO) A Coruña, Spain, September 2019
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2019
K. Fotiadou,
G. Tsagkatakis, and P. Tsakalides, “Alternating Direction Method of Multipliers for Semi-Blind Astronomical Image Deconvolution”, International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Brighton, UK, May 2019
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2019
G. Pitsis,
G. Tsagkatakis, C. Kozanitis, I. Kalomoiris, A. Ioannou, A. Dollas, M. Katevenis, and P. Tsakalides, “Efficient Convolutional Neural Network Weight Compression for Space Data Classification on Multi-FPGA Platforms”, International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Brighton, UK, May 2019
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2018
M. Giannopoulos,
G. Tsagkatakis, and P. Tsakalides, “On the impact of Tensor Completion in the Classification of Undersampled Hyperspectral Imagery”, European Signal Processing Conference (EUSIPCO), Rome, Italy, September 2018
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2018
K. Fotiadou,
G. Tsagkatakis, M. Moghaddam, P. Tsakalides, “Recovery of Soil Moisture Active Passive (SMAP) Instrument’s Active Measurements via Coupled Dictionary Learning”, Electronic Imaging Symposium, San Francisco, California, February 2018
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2018
A. Aidini,
G. Tsagkatakis, P. Tsakalides, “1-Bit Tensor Completion”, Electronic Imaging Symposium, San Francisco, California, February 2018 (Best Paper Award)
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2018
G. Tsagkatakis, M. Jaber, P. Tsakalides, “Convolutional neural networks for the analysis of broadcasted tennis games”, Electronic Imaging Symposium, San Francisco, February 2018
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2017
K. Fotiadou,
G. Tsagkatakis, B. Morales, F. B. Abdalla and P. Tsakalides, “Denoising Galaxy Spectra with Coupled Dictionary Learning”, European Signal Processing Conference (EUSIPCO), Kos, Greece, September 2017
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2017
E. Troullinou,
G. Tsagkatakis, G. Palagina, M. Papadopouli, S. M. Smirnakis, and P. Tsakalides, “Dictionary Learning for Spontaneous Neural Activity Modeling”, European Signal Processing Conference (EUSIPCO), Kos Island, Greece, September 2017
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2017
K. Fotiadou,
G. Tsagkatakis, and P. Tsakalides, “Multi-source Image Enhancement via Coupled Dictionary Learning”, Signal Processing with Adaptive Sparse Structured Representations Workshop (SPARS '17), Lisbon, Portugal, June 2017
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2017
M. Giannopoulos, S. Savvaki,
G. Tsagkatakis, and P. Tsakalides, “Application of Tensor and Matrix Completion on Environmental Sensing Data”, European Symposium on Artificial Neural Networks (ESANN), Bruges, Belgium, April 2017
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2017
S. Timotheatos,
G. Tsagkatakis, P. Tsakalides, P. Trahanias, “Feature Extraction and Learning for RSSI based Indoor Device Localization”, European Symposium on Artificial Neural Networks (ESANN), Belgium, April 2017
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2017
K. Fotiadou,
G. Tsagkatakis, and P. Tsakalides, “Deep Convolutional Neural Networks for the Classification of Snapshot Mosaic Hyperspectral Imagery”, Electronic Imaging Symposium, California, USA, January 2017
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2017
G. Tsagkatakis, M. Jaber and P. Tsakalides, “Goal!! Event detection in sports video”, Electronic Imaging Symposium, January 2017
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2016
G. Tsagkatakis and P. Tsakalides, “A Self-Similar and Sparse Approach for Spectral Mosaic Snapshot Recovery,” IEEE International Conference on Imaging Systems and Techniques (IST 2016), Chania, Greece, October, 2016
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2016
G. Tsagkatakis, L. Amoruso, D. Sykas, C. Abbattista, and P. Tsakalides, “Lightweight Onboard Hyperspectral Compression and Recovery by Matrix Completion”, Onboard Payload Data Compression (OBPDC) workshop, ESA/ESRIN, October 2016
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2016
S. Savvaki,
G. Tsagkatakis, A. Panousopoulou, and P. Tsakalides, “Effects of Matrix Completion on the Classification of Undersampled Human Activity Data Streams”, European Signal Processing Conference (EUSIPCO), Hungary, September 2016
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2016
G. Tsagkatakis, and P. Tsakalides, “Deep Feature Learning for Hyperspectral Image Classification and Land Cover Estimation”, ESA Living Planet Symposium, Czech Republic, May 2016
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2016
K. Fotiadou,
G. Tsagkatakis, and P. Tsakalides, “Spectral Super-Resolution for Hyperspectral Images via Sparse Representations”, ESA Living Planet Symposium, Czech Republic, May 2016
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2016
G. Tsagkatakis, M. Jayapala, B. Geelen, and P. Tsakalides, “Non-negative Matrix Completion for the Enhancement of Snapshot Mosaic Multispectral Imagery”, IS&T Image Sensors and Imaging Systems Conference, USA, January 2016 (Best Paper Award)
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2016
K. Fotiadou,
G. Tsagkatakis, and P. Tsakalides, “Spectral resolution enhancement of hyperspectral images via sparse representations”, IS&T Computational Imaging Conference, San Francisco, USA, January 2016
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2015
K. Karalas,
G. Tsagkatakis, M. Zervakis, and P. Tsakalides, “Deep learning for multi-label land cover classification”, SPIE Remote Sensing, Toulouse, France, October 2015
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2015
S. Savvaki,
G. Tsagkatakis, and P. Tsakalides, “Application of Matrix Completion on Water Treatment Data”, ACM Int. Workshop on Cyber-Physical Systems for Smart Water Networks, Seattle USA, November 2015
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2015
G. Tsagkatakis, and P. Tsakalides, “Compressed hyperspectral sensing”, Electronic Imaging symposium, San Francisco, USA, January 2015
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2015
G. Tsagkatakis, and P. Tsakalides, “Recovery of quantized compressed sensing measurements”, Electronic Imaging symposium, San Francisco, USA, January 2015
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2014
K. Fotiadou,
G. Tsagkatakis, and P. Tsakalides, “Low Light Image Enhancement via Sparse Representations”, International Conference on Image Analysis and Recognition, Portugal, Mai 2014
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2014
G. Tsagkatakis, P. Tsakalides, A. Woiselle, M. Bousquet, G. Tzagkarakis, and J.-L. Starck, “Compressed sensing reconstruction of convolved sparse signals”, IEEE International Conference on Acoustic, and Speech Signal Processing (ICASSP), Florence, Italy, November 2014
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2013
S. Nikitaki,
G. Tsagkatakis, and P. Tsakalides, "Efficient recalibration via Dynamic Matrix Completion," 23th IEEE Machine Learning for Signal Processing Workshop (MLSP '13), Southampton, UK, September, 2013
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2013
G. Tsagkatakis, A. Woiselle, G. Tzagkarakis, M. Bousquet, J.-L. Starck and P. Tsakalides, “Compressed Gated Range Sensing”, SPIE Optics + Photonics symposium: Wavelets and Sparsity XV, San Francisco USA, June 2013
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2013
S. Poularakis, G. Tsagkatakis, P. Tsakalides, and I. Katsavounidis, “Sparse Representations for Hand Gesture Recognition,” 38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP '13), Vancouver, Canada, May 2013
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2012
G. Tsagkatakis, A. Woiselle, G. Tzagkarakis, M. Bousquet, J. L. Starck, and P. Tsakalides, “Active Range Imaging via Random Gating”, Proc. SPIE Security and Defense, UK, 2012
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2012
G. Tsagkatakis and P. Tsakalides, “Efficient High Dynamic Range Imaging Via Matrix Completion”, IEEE Machine Learning for Signal Processing Workshop (MLSP), Santander, Spain, September, 2012
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2012
G. Tzagkarakis,
G. Tsagkatakis, J. L. Starck, and P. Tsakalides, “Compressive Video Classification in a Low-Dimensional Manifold with Learned Distance Metric,” 20th European Signal Processing Conference (EUSIPCO '12), Boucharest, Romania, August 2012
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2012
S. Nikitaki,
G. Tsagkatakis, and P. Tsakalides, “Efficient Training for Fingerprint Based Positioning Using Matrix Completion,” 20th European Signal Processing Conference (EUSIPCO '12), Boucharest, Romania, August 2012
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2012
G. Tsagkatakis and P. Tsakalides, “Dictionary Based Reconstruction and Classification of Randomly Sampled Sensor Network Data”, IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM), Hoboken USA, June 2012
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2012
A. Savakis, M. Stump, G. Tsagkatakis, R. Melton, G. Behm, and G. Sterns, "Low vision assistance using face detection and tracking on android smartphones," in IEEE 55th International Midwest Symposium on Circuits and Systems, Boise, USA, August 2012
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2011
R. Ptucha, G. Tsagkatakis, A. Savakis, “Manifold based sparse representation for robust expression recognition without neutral subtraction,” IEEE International Conference on Computer Vision Workshops (ICCV Workshops), Barcelona Spain, Nov. 2011
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2011
K. Moirogiorgou, G. Tsagkatakis, M. Zervakis and E. Petrakis, "A Real-Time System for HDTV Video Transmission over IP Networks," in Signal and Image Processing and Applications (SIPA' 2011), Crete, Greece, June 2011
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2010
G. Tsagkatakis and A. Savakis, “A Framework for Object Class Recognition with No Visual Examples”, IEEE Western NY Image Processing Workshop (WNYIP), NY USA, November 2010. (Best Paper Award)
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2010
G. Tsagkatakis and A. Savakis, “Face Recognition using Sparse Representations and Manifold Learning”, International Symposium on Visual Computing (ISVC), Las Vegas, USA November 2010
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2010
G. Tsagkatakis and A. Savakis, “Sparse Representations and Distance Learning for Attribute based Category Recognition”, IEEE European Conference on Computer Vision (ECCV): International Workshop on Parts and Attributes, Crete, September 2010
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2010
G. Tsagkatakis and A. Savakis, “Manifold Modeling with Learned Distance in Random Projection Space for Face Recognition”, International Conference on Pattern Recognition (ICPR), Istanbul Turkey, August 2010
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2009
G. Tsagkatakis and A. Savakis, “A Random Projections Model for Object Tracking under Variable Pose and Multi-Camera Views”, IEEE/ACM International Conference on Distributed Smart Cameras (ICDSC), Como, Italy, September 2009
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2009
G. Tsagkatakis and A. Savakis, “Random Projections for Face Detection under Resource Constraints”, IEEE International Conference on Image processing, Cairo, Egypt, November, 2009
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2008
G. Tsagkatakis and A. Savakis, “Face Detection in Resource Constrained Wireless Systems”, International Conference on Pattern Recognition (ICPR): Workshop on Mobile Multimedia Processing, Tampa, USA, December 2008
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2008
G. Tsagkatakis, M. Zervakis, and A. Savakis, “Multiple description based image transmission with Low Density Parity Check codes”, IEEE International Conference on Image processing (ICIP), San Diego, USA, October 2008