Nicholas Vretos

63 papers A* 1A 2B 10C 1Journal 21Unranked 27

Year	Rank	Type	Title / Venue / Authors
2024	J	`jnl`	Advances in Facial Expression Recognition: A Survey of Methods, Benchmarks, Models, and Datasets. Inf. Thomas Kopalidis, Vassilios Solachidis, Nicholas Vretos, Petros Daras
2024	J	`jnl`	Mahalanobis Distance-Based Graph Attention Networks. IEEE Access Konstantina Mardani, Nicholas Vretos, Petros Daras
2024	J	`jnl`	Survey on Graph Neural Networks. IEEE Access Georgios Gkarmpounis, Christos Vranis, Nicholas Vretos, Petros Daras
2024	—	`conf`	Variational Structure Learning for Semi-Supervised Classification. MLSP Konstantinos Marthoglou, Nicholas Vretos, Petros Daras
2023	J	`jnl`	Less Is More: Adaptive Trainable Gradient Dropout for Deep Neural Networks. Sensors Christos Avgerinos, Nicholas Vretos, Petros Daras
2023	J	`jnl`	Transformer-Based Fire Detection in Videos. Sensors Konstantina Mardani, Nicholas Vretos, Petros Daras
2022	—	`conf`	A Symbiotic Orchestration Module for Multi-agent Collaboration in Disaster Response Scenarios. ISCRAM Thomas Theodoridis, George Katsikas, Nicholas Vretos, Petros Daras
2022	—	`conf`	Monitoring of motor function in the rehabilitation room. PETRA Jennifer Jiménez, Juan Mercado, Laura Carrasco, Verónica Ruíz, Vassilios Solachidis, Javier Serrano, Nicholas Vretos, Federico Álvarez
2022	—	`conf`	Virtual assistants and intelligent care environments for long-term patients: A Home set scenario. PETRA Rodrigo Medina-García, Cristina María Lozano-Hernández, Juan Mercado Gómez, Jennifer Jiménez Ramos, Spela Glisovic Krivec, Martina Steinböck, Agostino Chiaravalloti, Panagiotis Karkazis, Vassilis Solachidis, Nicholas Vretos, Javier Serrano, Federico Álvarez
2021	B	`conf`	TeNDER: towards efficient Health Systems through e-Health platforms employing multimodal monitoring. CHASE Vassilis Solachidis, Jaime Rodriguez Moreno, Gustavo Hernández-Peñaloza, Nicholas Vretos, Federico Álvarez, Petros Daras
2021	J	`jnl`	Zernike Pooling: Generalizing Average Pooling Using Zernike Moments. IEEE Access Thomas Theodoridis, Kostas Loumponias, Nicholas Vretos, Petros Daras
2020	J	`jnl`	An Improved Tobit Kalman Filter with Adaptive Censoring Limits. Circuits Syst. Signal Process. Kostas Loumponias, Nicholas Vretos, George Tsaklidis, Petros Daras
2020	J	`jnl`	Comprehensive Comparison of Deep Learning Models for Lung and COVID-19 Lesion Segmentation in CT scans. CoRR Paschalis Bizopoulos, Nicholas Vretos, Petros Daras
2020	—	`conf`	Embracing Novel ICT Technologies to Support the Journey From Camp to Job. ICME Workshops Helen C. Leligou, Despina Anastosopoulos, Anita Montagna, Vassilis Solachidis, Nicholas Vretos
2020	—	`conf`	Multi-view Adaptive Graph Convolutions for Graph Classification. ECCV (26) Nikolas Adaloglou, Nicholas Vretos, Petros Daras
2020	J	`jnl`	Multi-view adaptive graph convolutions for graph classification. CoRR Nikolas Adaloglou, Nicholas Vretos, Petros Daras
2020	—	`conf`	Nadine-Bot: An Open Domain Migrant Integration Administrative Agent. ICME Workshops Athanasios Lelis, Nicholas Vretos, Petros Daras
2020	J	`jnl`	Non-Parametric Clustering Using Deep Neural Networks. IEEE Access Christos Avgerinos, Vassilios Solachidis, Nicholas Vretos, Petros Daras
2020	B	`conf`	RobusterNet: Improving Copy-Move Forgery Detection with Volterra-based Convolutions. ICPR Efthimia Kafali, Nicholas Vretos, Theodoros Semertzidis, Petros Daras
2019	—	`conf`	A Battery Powered Vision Sensor for Forensic Evidence Gathering. ICDSC Yu Zou, Michela Lecca, Massimo Gottardi, Giulio Urlini, Nicholas Vretos, Lazaros Gymnopoulos, Petros Daras
2019	—	`conf`	A novel framework for physical therapy rehabilitation monitoring and assessment in Parkinson disease patients using depth information. PETRA Alberto Belmonte-Hernández, Thomas Theodoridis, Marta Burgos González, Gustavo Hernández-Peñaloza, Vassilios Solachidis, Jennifer Jiménez Ramos, Federico Álvarez, Nicholas Vretos, Laura Carrasco, Petros Daras
2019	J	`jnl`	An Improved Tobit Kalman Filter with Adaptive Censoring Limits. CoRR Kostas Loumponias, Nicholas Vretos, George Tsaklidis, Petros Daras
2019	—	`conf`	Embedding Big Data in Graph Convolutional Networks. ICE/ITMC Gerasimos Palaiopanos, Panagiotis Stalidis, Nicholas Vretos, Theodoros Semertzidis, Petros Daras
2019	J	`jnl`	Exploiting sensing devices availability in AR/VR deployments to foster engagement. Virtual Real. Nicholas Vretos, Petros Daras, Stylianos Asteriadis, Enrique Hortal, Esam Ghaleb, Evaggelos Spyrou, Helen C. Leligou, Panagiotis Karkazis, Panagiotis Trakadas, Kostantinos Assimakopoulos
2019	J	`jnl`	Frequency-based slow feature analysis. Neurocomputing Alexandros Doumanoglou, Nicholas Vretos, Petros Daras
2019	J	`jnl`	Graph-based multimodal fusion with metric learning for multimodal classification. Pattern Recognit. Michalis Angelou, Vassilis Solachidis, Nicholas Vretos, Petros Daras
2018	—	`conf`	Adaptive Learning Based on Affect Sensing. AIED (2) Dorothea Tsatsou, Andrew Pomazanskyi, Enrique Hortal, Evaggelos Spyrou, Helen C. Leligou, Stylianos Asteriadis, Nicholas Vretos, Petros Daras
2018	—	`conf`	Adaptive Tobit Kalman-Based Tracking. SITIS Kostas Loumponias, Anastasios Dimou, Nicholas Vretos, Petros Daras
2018	—	`conf`	Affective State Recognition based on eye gaze Analysis using two-Stream Convolutional Networks. MLSP Christina Chrysouli, Nicholas Vretos, Petros Daras
2018	J	`jnl`	Behavior Analysis through Multimodal Sensing for Care of Parkinson's and Alzheimer's Patients. IEEE Multim. Federico Alvarez, Mirela Popa, Vassilios Solachidis, Gustavo Hernandez-Penaloza, Alberto Belmonte-Hernandez, Stylianos Asteriadis, Nicholas Vretos, Marcos Quintana, Thomas Theodoridis, Dario Dotti, Petros Daras
2018	—	`conf`	Exploiting IoT Technologies for Personalized Learning. CIG Evaggelos Spyrou, Nicholas Vretos, Andrew Pomazanskyi, Stylianos Asteriadis, Helen C. Leligou
2018	B	`conf`	Leveraging Skeleton Structure and Time Dependencies in the Scope of Action Recognition. ICIP Ioannis Tsingalis, Nicholas Vretos, Petros Daras
2018	—	`conf`	Two examples of online eHealth platforms for supporting people living with cognitive impairments and their caregivers. PETRA Vassilis Solachidis, Ioannis Paliokas, Nicholas Vretos, Konstantinos Votis, Ulises Cortés, Dimitrios Tzovaras
2017	—	`conf`	Affect state recognition for adaptive human robot interaction in learning environments. SMAP Dimitrios Antonaras, Charis Pavlidis, Nicholas Vretos, Petros Daras
2017	—	`conf`	ICT Services for Life Improvement for the Elderly. AAATE Conf. Alejandro Sánchez-Rico, Pascal Garel, Isabella Notarangelo, Marcos Quintana, Gustavo Hernández, Stylianos Asteriadis, Mirela Popa, Nicholas Vretos, Vassilis Solachidis, Marta Burgos, Ariane Girault
2017	B	`conf`	ICT4Life open source libraries supporting multimodal analysis of different diseases. AVSS Thomas Theodoridis, Vassilis Solachidis, Nicholas Vretos, Petros Daras, Dario Dotti, Mirela Popa, Gustavo Hernández, Federico Alvarez, Alejandro Gonzalez Paton, Angel Lopez
2017	—	`conf`	Modelling learning experiences in adaptive multi-agent learning environments. VS-GAMES Dorothea Tsatsou, Nicholas Vretos, Petros Daras
2017	B	`conf`	Multimodal monitoring of Parkinson's and Alzheimer's patients using the ICT4LIFE platform. AVSS Federico Alvarez, Mirela Popa, Nicholas Vretos, Alberto Belmonte-Hernandez, Stelios Asteriadis, Vassilis Solachidis, Triana Mariscal, Dario Dotti, Petros Daras
2017	A*	`conf`	Non-linear Convolution Filters for CNN-Based Learning. ICCV Georgios Zoumpourlis, Alexandros Doumanoglou, Nicholas Vretos, Petros Daras
2017	J	`jnl`	Non-linear Convolution Filters for CNN-based Learning. CoRR Georgios Zoumpourlis, Alexandros Doumanoglou, Nicholas Vretos, Petros Daras
2017	B	`conf`	Person tracking association using multi-modal systems. AVSS Alberto Belmonte-Hernandez, Vassilis Solachidis, Thomas Theodoridis, Gustavo Hernandez-Penaloza, Giuseppe Conti, Nicholas Vretos, Federico Alvarez, Petros Daras
2016	—	`conf`	Action recognition from videos using sparse trajectories. ICDP Alexandros Doumanoglou, Nicholas Vretos, Petros Daras
2016	B	`conf`	Enhancing real-time full 3D reconstruction of humans with pre-scanned meshes. ICIP Nicholas Vretos, Dimitrios S. Alexiadis, Dimitrios Zarpalas, Petros Daras
2016	J	`jnl`	Social Media Interaction and Analytics for Enhanced Educational Experiences. IEEE Multim. Georgios Palaiokrassas, Athanasios Voulodimos, Kleopatra Konstanteli, Nicholas Vretos, David Salama Osborne, Efstathia Chatzi, Petros Daras, Dora Varvarigou
2015	J	`jnl`	A novel dimensionality reduction technique based on kernel optimization through graph embedding. Signal Image Video Process. Nicholas Vretos, Anastasios Tefas, Ioannis Pitas
2014	—	`conf`	Future Media Internet Technologies for Digital Domes. HCI (16) Dimitrios Christopoulos, Efstathia Chatzi, Anargyros Chatzitofis, Nicholas Vretos, Petros Daras
2014	B	`conf`	Temporal and color consistent disparity estimation in stereo videos. ICIP Nicholas Vretos, Petros Daras
2013	—	`conf`	Three-dimensional monitoring of weightlifting for computer assisted training. VRIC Anargyros Chatzitofis, Nicholas Vretos, Dimitrios Zarpalas, Petros Daras
2013	J	`jnl`	Using robust dispersion estimation in support vector machines. Pattern Recognit. Nicholas Vretos, Anastasios Tefas, Ioannis Pitas
2012	—	`conf`	Facial expression recognition with robust covariance estimation and Support Vector Machines. MLSP Nicholas Vretos, Anastasios Tefas, Ioannis Pitas
2012	—	`conf`	The use of Audio-Visual Description Profile in 3D video content description. 3DTV-Conference Nicholas Vretos, Nikos Nikolaidis, Ioannis Pitas
2012	J	`jnl`	Video fingerprinting using Latent Dirichlet Allocation and facial images. Pattern Recognit. Nicholas Vretos, Nikos Nikolaidis, Ioannis Pitas
2012	—	`—`	Ανθρωποκεντρική ανάλυση και σημασιολογική περιγραφή βίντεο Nicholas Vretos
2011	B	`conf`	3D facial expression recognition using Zernike moments on depth images. ICIP Nicholas Vretos, Nikos Nikolaidis, Ioannis Pitas
2011	J	`jnl`	A mutual information based face clustering algorithm for movie content analysis. Image Vis. Comput. Nicholas Vretos, Vassilios Solachidis, Ioannis Pitas
2011	—	`conf`	Face clustering in videos based on spectral clustering techniques. ACPR Christina Chrysouli, Nicholas Vretos, Ioannis Pitas
2009	B	`conf`	A model-based facial expression recognition algorithm using Principal Components Analysis. ICIP Nicholas Vretos, Nikos Nikolaidis, Ioannis Pitas
2009	A	`conf`	A perceptual hashing algorithm using latent dirichlet allocation. ICME Nicholas Vretos, Nikos Nikolaidis, Ioannis Pitas
2008	—	`conf`	Facial expression recognition using angle-related information from facial meshes. EUSIPCO Nicholas Vretos, Vassilios Solachidis, Petr Somol, Ioannis Pitas
2007	C	`conf`	A Face Tracker Trajectories Clustering Using Mutual Information. MMSP Nicholas Vretos, Vassilios Solachidis, Ioannis Pitas
2006	A	`conf`	A Mutual Information based Face Clustering Algorithm for Movies. ICME Nicholas Vretos, Vassilios Solachidis, Ioannis Pitas
2005	—	`conf`	An MPEG-7 Based Description Scheme for Video Analysis Using Anthropocentric Video Content Descriptors. Panhellenic Conference on Informatics Nicholas Vretos, Vassilios Solachidis, Ioannis Pitas
2005	—	`conf`	An anthropocentric description scheme for movies content classification and indexing. EUSIPCO Nicholas Vretos, Vassilios Solachidis, Ioannis Pitas