Giorgos Retsinas 2026-10-10T17:51:52+00:00

Biosketch

George Retsinas was born in 1989, in Sparta, Greece. He received the Diploma degree in Electrical and Computer Engineering from National Technical University of Athens in February 2014. His diploma thesis, supervised by Prof. Petros Maragos, tackled fingerspelling, a subtask of sing language recognition. He received his Ph.D. degree from the Department of Electrical and Computer Engineering of National Technical University of Athens in February 2020. Part of his Ph.D. (2015-2018) was done in collaboration with the Institute of Informatics and Telecommunications of the National Center for Scientific Research “Demokritos”. The main research direction during this collaboration was document analysis and recognition, with emphasis on machine learning approaches. Additional research directions, addressed during his PhD, included bio-signal processing and compression of deep neural networks. He has authored 17 papers in journals and conference proceedings and has participated in four national and European research projects. His main research interests are in Image Processing and Document Image Analysis, Pattern Recognition, Deep Learning, Algorithms and Mathematical Optimization.

Publications

2025

D. Svyezhentsev, G. Retsinas, P. Maragos

Pre-Training For Action Recognition With Automatically Generated Fractal Datasets Journal Article

International Journal of Computer Vision, 2025.

BibTeX | Links: [PDF]

B. Psomas, G. Retsinas, N. Efthymiadis, P. Filntisis, Y. Avrithis, P. Maragos, O. Chum, G. Tolias

Instance-Level Composed Image Retrieval Conference

Proc. Thirty-ninth Annual Conference on Neural Information Processing Systems (NeurIPS 2025), San Diego, USA, 2025.

BibTeX | Links: [Webpage] [PDF]

M. Glytsos, P. P. Filntisis, G. Retsinas, P. Maragos

Category-Level 6D Object Pose Estimation in Agricultural Settings Using a Lattice-Deformation Framework and Diffusion-Augmented Synthetic Data Conference

Proc. IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), Hangzhou, China, 2025.

BibTeX | Links: [PDF]

K. Papadimitriou, P. Filntisis, G. Retsinas, G. Potamianos, P. Maragos

Seeing in 2D, Thinking in 3D: 3D Hand Mesh-Guided Feature Learning for Continuous Fingerspelling Conference

Proc. IEEE/CVF International Conference on Computer Vision (ICCV) Workshops, Honolulu, Hawaii, 2025.

BibTeX | Links: [PDF]

T. Aravanis, P. P. Filntisis, P. Maragos, G. Retsinas

Only-Style: Stylistic Consistency in Image Generation without Content Leakage Conference

Proc. IEEE/CVF International Conference on Computer Vision (ICCV) Workshops, Honolulu, Hawaii, 2025.

BibTeX | Links: [PDF]

O. Konstantaropoulos, M. Khamassi, P. Maragos, G. Retsinas

Push, See, Predict: Emergent Perception Through Intrinsically Motivated Play Conference

Proc. 2025 IEEE Int'l Conf. on Development and Learning (ICDL), Prague, Czechia, 2025.

BibTeX | Links: [PDF]

N. Giannakakis, A. Manetas, P. P. Filntisis, P. Maragos, G. Retsinas

Object-Centric Action-Enhanced Representations for Robot Visuo-Motor Policy Learning Conference

Proc. 2025 IEEE Int'l Conf. on Development and Learning (ICDL), Prague, Czechia, 2025.

BibTeX | Links: [PDF]

P. P. Filntisis, E. Tsaprazlis, P. Oikonomou, F. Mattioli, V. G. Santucci, G. Retsinas, P. Maragos

Towards Open-ended Robotic Exploration using Vision-Inspired Similarity and Foundation Models Conference

Proc. 2025 IEEE International Conference on Robotics and Automation (ICRA 2025), Atlanta, USA, 2025.

BibTeX | Links: [PDF]

P. Oikonomou, G. Retsinas, P. Maragos, C. S. Tzafestas

Proactive tactile exploration for object-agnostic shape reconstruction from minimal visual priors Conference

Proc. 2025 IEEE International Conference on Robotics and Automation (ICRA 2025), Atlanta, USA, 2025.

BibTeX | Links: [PDF]

2024

A Zlatintsi, P P Filntisis, N Efthymiou, C Garoufis, G Retsinas, T Sounapoglou, I Maglogiannis, P Tsanakas, N Smyrnis, P Maragos

Person Identification and Relapse Detection from Continuous Recordings of Biosignals Challenge: Overview and Results Journal Article

IEEE Open Journal of Signal Processing, 2024.

BibTeX | Links: [PDF]

George Retsinas, Panagiotis P Filntisis, Radek Danecek, Victoria F Abrevaya, Anastasios Roussos, Timo Bolkart, Petros Maragos

3D Facial Expressions through Analysis-by-Neural-Synthesis Conference

Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2024.

BibTeX | Links: [PDF]

N Efthymiou, G Retsinas, P P Filntisis, P Maragos

Augmenting Transformer Autoencoders with Phenotype Classification for Robust Detection of Psychotic Relapses Conference

Proc. IEEE Int’l Conference on Acoustics, Speech, and Signal Processing (ICASSP 2024), Seoul, Korea, 2024.

BibTeX | Links: [PDF]

I Kordonis, E Theodosis, G Retsinas, P Maragos

Matrix Factorization in Tropical and Mixed Tropical-Linear Algebras Conference

Proc. IEEE Int’l Conference on Acoustics, Speech, and Signal Processing (ICASSP 2024), Seoul, Korea, 2024.

BibTeX | Links: [PDF]

2023

G Retsinas, N Efthymiou, D Anagnostopoulou, P Maragos

Mushroom Detection and Three Dimensional Pose Estimation from Multi-View Point Clouds Journal Article

Sensors, 23 (7), pp. 3576, 2023.

BibTeX | Links: [PDF]

A Glentis-Georgoulakis, G Retsinas, P Maragos

Feather: An Elegant Solution to Effective DNN Sparsification Conference

Proc. 34th Bristish Machine Vision Conference (BMVC 2023), Aberdeen, UK, 2023.

BibTeX | Links: [PDF]

M Konstantinou, G Retsinas, P Maragos

Enhancing Action Recognition in Vehicle Environments With Human Pose Information Conference

Proc. Int'l Conf. on Pervasive Technologies Related to Assistive Environments (PETRA 2023), 2023.

BibTeX | Links: [PDF]

N Efthymiou, G Retsinas, P P Filntisis, A Zlatintsi, E Kalisperakis, V Garyfalli, T Karantinos, M Lazaridi, N Smyrnis, P Maragos

From Digital Phenotype Identification To Detection Of Psychotic Relapses Conference

Proc. IEEE International Conference on Healthcare Informatics, Houston, TX, USA, 2023.

BibTeX | Links: [PDF] [Slides]

G Retsinas, G Sfikas, P P Filntisis, P Maragos

Newton-based Trainable Learning Rate Conference

Proc. 48th IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2023), Rhodes, Greece, 2023.

BibTeX | Links: [PDF]

P P Filntisis, G Retsinas, F Paraperas-Papantoniou, A Katsamanis, A Roussos, P Maragos

SPECTRE: Visual Speech-Informed Perceptual 3D Facial Expression Reconstruction from Videos Conference

Proc. 2023 IEEE/CVF Conf. on Computer Vision and Pattern Recognition (CVPR), 5th Workshop and Competition on Affective Behavior Analysis in-the-wild (ABAW), Vancouver, Canada, 2023.

BibTeX | Links: [PDF]

G Retsinas, N Efthymiou, P Maragos

Mushroom Segmentation and 3D Pose Estimation From Point Clouds Using Fully Convolutional Geometric Features and Implicit Pose Encoding Conference

Proc. 2023 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 4th Agriculture Vision Workshop, Vancouver, Canada, 2023.

BibTeX | Links: [PDF]

D Anagnostopoulou, G Retsinas, N Efthymiou, P P Filntisis, P Maragos

A Realistic Synthetic Mushroom Scenes Dataset Conference

Proc. 2023 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 4th Agriculture Vision Workshop, Vancouver, Canada, 2023.

BibTeX | Links: [PDF] [Poster]

2022

G Retsinas, P Filntisis, N Kardaris, P Maragos

Attribute-based Gesture Recognition: Generalization to Unseen Classes Conference

Proc. 14th Image, Video, and Multidimensional Signal Processing Workshop (IVMSP 2022), Nafplio, Greece, 2022.

BibTeX | Links: [PDF]

P Misiakos, G Smyrnis, G Retsinas, P Maragos

Neural Network Approximation based on Hausdorff Distance of Tropical Zonotopes Conference

Proc. Int’l Conf. on Learning Representations (ICLR 2022), 2022.

BibTeX | Links: [PDF] [Poster] [Slides]

2020

V. Tassopoulou, G. Retsinas,, P. Maragos

Enhancing Handwritten Text Recognition with N-gram sequence decomposition and Multitask Learning Conference

Intl' Conference Pattern Recognition (ICPR 2020), Milan, Italy, 2020.

BibTeX | Links: [PDF]

I. Maglogiannis, A. Zlatintsi, A. Menychtas, D. Papadimatos, P.P. Filntisis, N. Efthymiou, G. Retsinas, P. Tsanakas,, P. Maragos

An intelligent cloud-based platform for effective monitoring of patients with psychotic disorders Conference

Int’l Conf. on Artificial Intelligence Applications and Innovation (AIAI-2020), Halkidiki, Greece, 2020.

BibTeX | Links: [PDF]

G Retsinas, P P Filntisis, N Efthymiou, E Theodosis, A Zlatintsi, P Maragos

Person Identification Using Deep Convolutional Neural Networks on Short-Term Signals from Wearable Sensors Conference

ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2020.

BibTeX | Links: [PDF]

G Smyrnis, P Maragos, G Retsinas

Maxpolynomial Division with Application To Neural Network Simplification Conference

ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2020.

BibTeX | Links: [PDF]

I Marougkas, P Koutras, N Kardaris, G Retsinas, G Chalvatzaki, P Maragos

How to track your dragon: A Multi-Attentional Framework for Real-time RGB-D 6-DOF Object Pose Tracking Conference

Proc. European Conference on Computer Vision Workshops (ECCVW) - 6th Int’l Workshop on Recovering 6D Object Pose, 2020.

BibTeX | Links: [PDF]

2019

George Retsinas, Athena Elafrou, Georgios Goumas, Petros Maragos

RecNets: Channel-wise Recurrent Convolutional Neural Networks Conference

British Machine Vision Conference (BMVC-2019), Cardiff, UK, 2019.

BibTeX | Links: [PDF]