Dr. Nicholas Vretos obtained the degree of BSc in Computer Science from the University Pierre et Marie Curie (Paris VI) in 2002 and his Ph.D. from the Aristotle University of Thessaloniki in 2012. During the elaboration of his thesis, he taught as an assistant and worked as a research assistant in Artificial Intelligence and Information Analysis Laboratory. He has worked on 15 European projects as Technical Manager/ WP Leader/researcher. He has published more than 70 articles in scientific journals...
| Migration Reasearch Hub ID: 2167 | |
| ORCID | https://orcid.org/0000-0003-3604-9685 |
| https://www.linkedin.com/in/nicholas-vretos-2811b35b/detail/recent-activity/shares/ | |
Expertise
Migration consequences (for migrants, sending and receiving countries)
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Transversal consequences
Cross-cutting topics in migration research
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Migration research and theory
Disciplines
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Disciplines
Geographies
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Scope
Roles
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Centre For Research And Technolgy Hellas
Research Institute, Thessaloniki, Greece
Researcher
Research
Survey on Graph Neural Networks
| Authors | Georgios Gkarmpounis, Christos Vranis, Nicholas Vretos, ... |
| Year | 2024 |
| Journal Name | IEEE Access |
Experiences and Lessons Learnt from the Evaluation of ICT Tools for and with Migrants
| Authors | Helen C. Leligou, Despina Anastasopoulos, Nicholas Vretos, ... |
| Year | 2021 |
| Journal Name | SOCIAL SCIENCES-BASEL |
| Citations (WoS) | 1 | Taxonomy | View Taxonomy Associations |
Zernike Pooling: Generalizing Average Pooling Using Zernike Moments
| Authors | Thomas Theodoridis, Kostas Loumponias, Nicholas Vretos, ... |
| Year | 2021 |
| Journal Name | IEEE Access |
An Improved Tobit Kalman Filter with Adaptive Censoring Limits
| Authors | Kostas Loumponias, Nicholas Vretos, George Tsaklidis, ... |
| Year | 2020 |
| Journal Name | Circuits, Systems, and Signal Processing |
Data Augmentation Using GANs for 3D Applications
| Authors | Ioannis Maniadis, Vassilis Solachidis, Nicholas Vretos, ... |
| Year | 2020 |
| Book Title | Recent Advances in 3D Imaging, Modeling, and Reconstruction | Taxonomy | View Taxonomy Associations |
Non-Parametric Clustering Using Deep Neural Networks
| Authors | Christos Avgerinos, Vassilios Solachidis, Nicholas Vretos, ... |
| Year | 2020 |
| Journal Name | IEEE Access |
A Battery Powered Vision Sensor for Forensic Evidence Gathering
| Authors | Y. Zou, M. Lecca, M. Gottardi, ... |
| Year | 2019 |
| Journal Name | Proceedings of the 13th International Conference on Distributed Smart Cameras |
A novel framework for physical therapy rehabilitation monitoring and assessment in Parkinson disease patients using depth information
| Authors | Alberto Belmonte-Hernández, Thomas Theodoridis, Marta Burgos González, ... |
| Year | 2019 |
| Journal Name | Proceedings of the 12th ACM International Conference on PErvasive Technologies Related to Assistive Environments |
Adaptive game-based learning in multi-agent educational settings
| Authors | Dorothea Tsatsou, Nicholas Vretos, Petros Daras |
| Year | 2019 |
| Journal Name | Journal of Computers in Education | Taxonomy | View Taxonomy Associations |
Exploiting sensing devices availability in AR/VR deployments to foster engagement
| Authors | Nicholas Vretos, Petros Daras, Stylianos Asteriadis, ... |
| Year | 2019 |
| Journal Name | Virtual Reality |
Embedding Big Data in Graph Convolutional Networks
| Authors | Gerasimos Palaiopanos, Panagiotis Stalidis, Nicholas Vretos, ... |
| Year | 2019 |
| Journal Name | 2019 IEEE International Conference on Engineering, Technology and Innovation (ICE/ITMC) | Taxonomy | View Taxonomy Associations |
Frequency–based slow feature analysis
| Authors | Alexandros Doumanoglou, Nicholas Vretos, Petros Daras |
| Year | 2019 |
| Journal Name | Neurocomputing |
Graph-based multimodal fusion with metric learning for multimodal classification
| Authors | Michalis Angelou, Vassilis Solachidis, Nicholas Vretos, ... |
| Year | 2019 |
| Journal Name | Pattern Recognition |
Two examples of online eHealth platforms for supporting people living with cognitive impairments and their caregivers
| Authors | Vassilis Solachidis, Ioannis Paliokas, Nicholas Vretos, ... |
| Year | 2018 |
| Journal Name | Proceedings of the 11th PErvasive Technologies Related to Assistive Environments Conference |
Adaptive Learning Based on Affect Sensing
| Authors | Dorothea Tsatsou, Andrew Pomazanskyi, Enrique Hortal, ... |
| Year | 2018 |
| Book Title | Artificial Intelligence in Education |
Human Fall Detection from Acceleration Measurements Using a Recurrent Neural Network
| Authors | T. Theodoridis, V. Solachidis, N. Vretos, ... |
| Year | 2018 |
| Book Title | IFMBE Proceedings |
Adaptive Tobit Kalman-Based Tracking
| Authors | Kostas Loumponias, Anastasios Dimou, Nicholas Vretos, ... |
| Year | 2018 |
| Journal Name | 2018 14th International Conference on Signal-Image Technology & Internet-Based Systems (SITIS) |
Behavior Analysis through Multimodal Sensing for Care of Parkinson’s and Alzheimer’s Patients
| Authors | Federico Alvarez, Mirela Popa, Vassilios Solachidis, ... |
| Year | 2018 |
| Journal Name | IEEE MultiMedia |
Leveraging Skeleton Structure and Time Dependencies in the Scope of Action Recognition
| Authors | Ioannis Tsingalis, Nicholas Vretos, Petros Daras |
| Year | 2018 |
| Journal Name | 2018 25th IEEE International Conference on Image Processing (ICIP) |
Exploiting IoT Technologies for Personalized Learning
| Authors | Evaggelos Spyrou, Nicholas Vretos, Andrew Pomazanskyi, ... |
| Year | 2018 |
| Journal Name | 2018 IEEE Conference on Computational Intelligence and Games (CIG) |
Social media interaction and analytics for enhanced educational experiences
| Authors | Georgios Palaiokrassas, Athanasios Voulodimos, Kleopatra Konstanteli, ... |
| Year | 2018 |
| Journal Name | IEEE MultiMedia | Taxonomy | View Taxonomy Associations |
AFFECTIVE STATE RECOGNITION BASED ON EYE GAZE ANALYSIS USING TWO–STREAM CONVOLUTIONAL NETWORKS
| Authors | Christina Chrysouli, Nicholas Vretos, Petros Daras |
| Year | 2018 |
| Journal Name | 2018 IEEE 28th International Workshop on Machine Learning for Signal Processing (MLSP) | Taxonomy | View Taxonomy Associations |
Multimodal monitoring of Parkinson's and Alzheimer's patients using the ICT4LIFE platform
| Authors | Federico Alvarez, Mirela Popa, Nicholas Vretos, ... |
| Year | 2017 |
| Journal Name | 2017 14th IEEE International Conference on Advanced Video and Signal Based Surveillance (AVSS) |
Affect state recognition for adaptive human robot interaction in learning environments
| Authors | Dimitrios Antonaras, Charis Pavlidis, Nicholas Vretos, ... |
| Year | 2017 |
| Journal Name | 2017 12th International Workshop on Semantic and Social Media Adaptation and Personalization (SMAP) | Taxonomy | View Taxonomy Associations |
ICT4Life open source libraries supporting multimodal analysis of different diseases
| Authors | Thomas Theodoridis, Vassilis Solachidis, Nicholas Vretos, ... |
| Year | 2017 |
| Journal Name | 2017 14th IEEE International Conference on Advanced Video and Signal Based Surveillance (AVSS) |
Non-linear Convolution Filters for CNN-Based Learning
| Authors | Georgios Zoumpourlis, Alexandros Doumanoglou, Nicholas Vretos, ... |
| Year | 2017 |
| Journal Name | 2017 IEEE International Conference on Computer Vision (ICCV) |
Person tracking association using multi-modal systems
| Authors | A. Belmonte-Hernandez, V. Solachidis, T. Theodoridis, ... |
| Year | 2017 |
| Journal Name | 2017 14th IEEE International Conference on Advanced Video and Signal Based Surveillance (AVSS) |
Modelling learning experiences in adaptive multi-agent learning environments
| Authors | Dorothea Tsatsou, Nicholas Vretos, Petros Daras |
| Year | 2017 |
| Journal Name | 2017 9th International Conference on Virtual Worlds and Games for Serious Applications (VS-Games) | Taxonomy | View Taxonomy Associations |
Action Recognition From Videos using Sparse Trajectories
| Authors | A. Doumanoglou, N. Vretos, P. Daras |
| Year | 2016 |
| Journal Name | 7th International Conference on Imaging for Crime Detection and Prevention (ICDP 2016) |
Enhancing real-time full 3D reconstruction of humans with pre-scanned meshes
| Authors | Nicholas Vretos, Dimitrios Alexiadis, Dimitrios Zarpalas, ... |
| Year | 2016 |
| Journal Name | 2016 IEEE International Conference on Image Processing (ICIP) |
Social Media Interaction and Analytics for Enhanced Educational Experiences
| Authors | Georgios Palaiokrassas, Athanasios Voulodimos, Kleopatra Konstanteli, ... |
| Year | 2016 |
| Journal Name | IEEE MultiMedia | Taxonomy | View Taxonomy Associations |
A novel dimensionality reduction technique based on kernel optimization through graph embedding
| Authors | N. Vretos, A. Tefas, I. Pitas |
| Year | 2015 |
| Journal Name | Signal, Image and Video Processing |
Parental acceptance of behaviour-management techniques used in paediatric dentistry and its relation to parental dental anxiety and experience
| Authors | V. Boka, K. Arapostathis, N. Vretos, ... |
| Year | 2014 |
| Journal Name | European Archives of Paediatric Dentistry |
Temporal and color consistent disparity estimation in stereo videos
| Authors | Nicholas Vretos, Petros Daras |
| Year | 2014 |
| Journal Name | 2014 IEEE International Conference on Image Processing (ICIP) |
Future Media Internet Technologies for Digital Domes
| Authors | Dimitrios Christopoulos, Efstathia Hatzi, Anargyros Chatzitofis, ... |
| Year | 2014 |
| Book Title | Virtual, Augmented and Mixed Reality. Designing and Developing Virtual and Augmented Environments | Taxonomy | View Taxonomy Associations |
Three-dimensional monitoring of weightlifting for computer assisted training
| Authors | Anargyros Chatzitofis, Nicholas Vretos, Dimitrios Zarpalas, ... |
| Year | 2013 |
| Journal Name | Proceedings of the Virtual Reality International Conference: Laval Virtual |
Using robust dispersion estimation in support vector machines
| Authors | N. Vretos, A. Tefas, I. Pitas |
| Year | 2013 |
| Journal Name | Pattern Recognition |
Facial expression recognition with robust covariance estimation and Support Vector Machines
| Authors | N. Vretos, A. Tefas, I. Pitas |
| Year | 2012 |
| Journal Name | 2012 IEEE International Workshop on Machine Learning for Signal Processing |
The use of Audio-Visual Description Profile in 3D video content description
| Authors | Nicholas Vretos, Nikos Nikolaidis, Ioannis Pitas |
| Year | 2012 |
| Journal Name | 2012 3DTV-Conference: The True Vision - Capture, Transmission and Display of 3D Video (3DTV-CON) |
Video fingerprinting using Latent Dirichlet Allocation and facial images
| Authors | Nicholas Vretos, Nikos Nikolaidis, Ioannis Pitas |
| Year | 2012 |
| Journal Name | Pattern Recognition |
Anthropocentric descriptors and description schemes for multi-view video content
| Authors | Ioannis Tsingalis, Nicholas Vretos, Nikos Nikolaidis, ... |
| Year | 2012 |
| Journal Name | 2012 16th IEEE Mediterranean Electrotechnical Conference |
A mutual information based face clustering algorithm for movie content analysis
| Authors | N. Vretos, V. Solachidis, I. Pitas |
| Year | 2011 |
| Journal Name | Image and Vision Computing | Taxonomy | View Taxonomy Associations |
Face clustering in videos based on spectral clustering techniques
| Authors | Christina Chrysouli, Nicholas Vretos, Ioannis Pitas |
| Year | 2011 |
| Journal Name | The First Asian Conference on Pattern Recognition |
3D facial expression recognition using Zernike moments on depth images
| Authors | Nicholas Vretos, Nikos Nikolaidis, Ioannis Pitas |
| Year | 2011 |
| Journal Name | 2011 18th IEEE International Conference on Image Processing |
A model-based facial expression recognition algorithm using Principal Components Analysis
| Authors | N. Vretos, N. Nikolaidis, I. Pitas |
| Year | 2009 |
| Journal Name | 2009 16th IEEE International Conference on Image Processing (ICIP) | Taxonomy | View Taxonomy Associations |
A perceptual hashing algorithm using latent dirichlet allocation
| Authors | Nicholas Vretos, Nikos Nikolaidis, Ioannis Pitas |
| Year | 2009 |
| Journal Name | 2009 IEEE International Conference on Multimedia and Expo |
Anthropocentric Semantic Information Extraction from Movies
| Authors | Nicholas Vretos, Vassilios Solachidis, Ioannis Pitas |
| Year | 2008 |
| Book Title | Computational Intelligence in Multimedia Processing: Recent Advances |
Metadata Description of Thermal Videos for Rescue Operations
| Authors | Andras Hajdu, Charalambos Giamas, Nicholas Vretos, ... |
| Year | 2007 |
| Journal Name | 2007 International Symposium on Signals, Circuits and Systems |
A Face Tracker Trajectories Clustering Using Mutual Information
| Authors | N. Vretos, V. Solachidis, I. Pitas |
| Year | 2007 |
| Journal Name | 2007 IEEE 9th Workshop on Multimedia Signal Processing |
A Mutual Information based Face Clustering Algorithm for Movies
| Authors | N. Vretos, V. Solachidis, I. Pitas |
| Year | 2006 |
| Journal Name | 2006 IEEE International Conference on Multimedia and Expo |
An MPEG-7 Based Description Scheme for Video Analysis Using Anthropocentric Video Content Descriptors
| Authors | N. Vretos, V. Solachidis, I. Pitas |
| Year | 2005 |
| Book Title | Lecture Notes in Computer Science |
Advances in Facial Expression Recognition: A Survey of Methods, Benchmarks, Models, and Datasets
| Authors | Thomas Kopalidis, Vassilios Solachidis, Nicholas Vretos, ... |
| Year | 2024 |
| Journal Name | Information | Taxonomy | View Taxonomy Associations |
Transformer-Based Fire Detection in Videos
| Authors | Konstantina Mardani, Nicholas Vretos, Petros Daras |
| Year | 2023 |
| Journal Name | Sensors | Taxonomy | View Taxonomy Associations |
Less Is More: Adaptive Trainable Gradient Dropout for Deep Neural Networks
| Authors | Christos Avgerinos, Nicholas Vretos, Petros Daras |
| Year | 2023 |
| Journal Name | Sensors | Taxonomy | View Taxonomy Associations |
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