Dr Georgios Tzimiropoulos

Georgios Tzimiropoulos

Senior Lecturer

School of Electronic Engineering and Computer Science
Queen Mary University of London

Research

Computer Vision, Deep Learning

Interests

My research interests are mainly in the problems of image & video recognition, detection and tracking, pose estimation, image & video generation, 3D reconstruction and super-resolution, with humans and their actions being the focal point of my research. I have approached these problems mainly using tools from Mathematical Optimization and Machine Learning. My current focus is on Compute & Data Efficient Deep Learning and its application to video recognition.

Publications

solid heart iconPublications of specific relevance to the Centre for Multimodal AI

2024

bullet iconMemsvd: Long-Range Temporal Structure Capturing Using Incremental SVD
Ntinou I, Sanchez E and Tzimiropoulos G
2024 IEEE International Conference on Image Processing (ICIP)
30-10-2024
bullet iconEfficient Unsupervised Visual Representation Learning with Explicit Cluster Balancing
Maniadis Metaxas I, Tzimiropoulos G and Patras I
European Conference on Computer Vision 2024 29 Sep 2024 - 4 Oct 2024
29-09-2024
Relevant PublicationCemiFace: Center-based Semi-hard Synthetic Face Generation for Face Recognition.
Sun Z, Song S, Patras I and Tzimiropoulos G
 
01-01-2024
Relevant PublicationEfficient Vision-Language pre-training via domain-specific learning for human activities
Bulat A, Ouali Y, Guerrero R, Martinez B and Tzimiropoulos G
Proceedings of the 2024 Conference on Empirical Methods in Natural Language Processing
01-01-2024

2023

Relevant PublicationLanguage-Aware Soft Prompting: Text-to-Text Optimization for Fewand Zero-Shot Adaptation of V&L Models
Bulat A and Tzimiropoulos G
International Journal of Computer Vision, Springer 
26-10-2023
bullet iconBlack Box Few-Shot Adaptation for Vision-Language models
Ouali Y, Bulat A, Martinez B and Tzimiropoulos G
International Conference on Computer Vision
02-10-2023
Relevant PublicationFs-detr: Few-shot detection transformer with prompting and without re-training
Bulat A, Guerrero R, Martinez B and Tzimiropoulos G
International Conference on Computer Vision
02-10-2023
Relevant PublicationReGen: A good Generative zero-shot video classifier should be Rewarded
Bulat A, Sanchez E, Martinez B and Tzimiropoulos G
International Conference on Computer Vision
02-10-2023
Relevant PublicationHyperReenact: one-shot reenactment via jointly learning to refine and retarget faces
Bounareli S, TZELEPIS C, Argyriou V, Patras I and Tzimiropoulos G
International Conference on Computer Vision
02-10-2023
Relevant PublicationBayesian Prompt Learning for Image-Language Model Generalization
Derakhshani MM, Sanchez E, Bulat A, Turrisi da Costa VG, Snoek CGM, Tzimiropoulos G and Martinez B
International Conference on Computer Vision
02-10-2023
Relevant PublicationLASP: Text-to-Text Optimization for Language-Aware Soft Prompting of Vision & Language Models
Bulat A and Tzimiropoulos G
2023 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)
24-06-2023
Relevant PublicationFrom Keypoints to Object Landmarks via Self-Training Correspondence: A novel approach to Unsupervised Landmark Discovery
Mallis D, Sanchez E, Bell M and Tzimiropoulos G
Ieee Transactions On Pattern Analysis and Machine Intelligence, Institute of Electrical and Electronics Engineers 
04-01-2023
Relevant PublicationA Simple Baseline for Knowledge-Based Visual Question Answering.
Xenos A, Stafylakis T, Patras I and Tzimiropoulos G
, Editors: Bouamor H, Pino J and Bali K. 
01-01-2023

2022

Relevant PublicationPart-based Face Recognition with Vision Transformers
Sun Z and Tzimiropoulos G
British Machine Vision Conference
21-11-2022
Relevant PublicationFinding Directions in GAN’s Latent Space for Neural Face Reenactment
Bounareli S, Argyriou V and Tzimiropoulos G
British Machine Vision Conference
21-11-2022
Relevant PublicationEdgeViTs: Competing Light-weight CNNs onMobile Devices with Vision Transformers
Pan J, Bulat A, Tan F, Zhu X, Dudziak L, Li H, Tzimiropoulos G and Martinez B
European Conference on Computer Vision
25-10-2022
Relevant PublicationPre-training strategies and datasets for facial representation learning
Bulat A, Cheng S, Yang J, Garbett A, Sanchez E and Tzimiropoulos G
European Confence on Computer Vision
25-10-2022

2021

bullet iconSpace-time Mixing Attention for Video Transformer
Bulat A, Perez-Rua J-M, Sudhakaran S, Martinez B and Tzimiropoulos G
Thirty-fifth Conference on Neural Information Processing Systems
06-12-2021
Relevant PublicationWarpedGANSpace: Finding non-linear RBF paths in GAN latent space
Tzelepis C, Tzimiropoulos G and Patras I
2021 IEEE/CVF International Conference on Computer Vision (ICCV)
17-10-2021
bullet iconBit-Mixer: Mixed-precision networks with runtime bit-width selection
Bulat A and Tzimiropoulos G
International Conference on Computer Vision (ICCV) 11 Oct 2021 - 17 Oct 2021
11-10-2021
bullet iconAffective Processes: stochastic modelling of temporal context for emotion and facial expression recognition
Sanchez E, Tellamekala MK, Valstar M and Tzimiropoulos G
IEEE/CVF Conference on Computer Vision and Pattern Recognition 19 Jun 2021 - 25 Jun 2021
21-06-2021
bullet iconKnowledge distillation via softmax regression representation learning
Yang J, Martinez B, Bulat A and Tzimiropoulos G
International Conference on Learning Representations (ICLR)
04-05-2021
bullet iconHigh-Capacity Expert Binary Networks
Bulat A, Martinez B and Tzimiropoulos G
International Conference on Learning Representations (ICLR)
04-05-2021
bullet iconSelf-supervised Learning of Person-specific Facial Dynamics for Automatic Personality Recognition
Song S, Jaiswal S, Sanchez E, Tzimiropoulos G, Shen L and Valstar M
Ieee Transactions On Affective Computing, Institute of Electrical and Electronics Engineers 
09-03-2021
bullet iconA Transfer Learning approach to Heatmap Regression for Action Unit intensity estimation
Ntinou IN, Sanchez E, Bulat A, Tzimiropoulos G and Valstar M
Ieee Transactions On Affective Computing 
23-02-2021

2020

bullet iconUnsupervised Learning of Object Landmarks via Self-Training Correspondence
Dimitrios M, Enrique S, Matt B and Tzimiropoulos G
Advances in Neural Information Processing Systems (NeurIPS) 6 Dec 2020 - 12 Dec 2020
06-12-2020
bullet iconBATS: Binary ArchitecTure Search
Bulat A, Martinez B and Tzimiropoulos G
European Conference on Computer Vision (ECCV) 23 Aug 2020 - 28 Aug 2020
24-08-2020
bullet iconAnimaWeb: A Large-Scale Hierarchical Dataset of Annotated Animal Faces
Khan MH, McDonagh J, Khan S, Shahabuddin M, Arora A, Khan FS, Shao L and Tzimiropoulos G
2020 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)
13-06-2020
bullet iconFAN-Face: a Simple Orthogonal Improvement to Deep Face Recognition
Yang J, Bulat A and Tzimiropoulos G
Proceedings of The Aaai Conference On Artificial Intelligence, Association For The Advancement of Artificial Intelligence (Aaai) vol. 34 (07), 12621-12628.  
03-04-2020

2019

bullet iconT-Net: Parametrizing Fully Convolutional Nets with a Single High-Order Tensor
Kossaifi J, Bulat A, Tzimiropoulos G and Pantic M
2019 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)
20-06-2019

2018

bullet iconHierarchical Binary CNNs for Landmark Localization with Limited Resources
Bulat A and Tzimiropoulos G
Ieee Transactions On Pattern Analysis and Machine Intelligence, Institute of Electrical and Electronics Engineers vol. 42 (2), 343-356.  
23-08-2018

2017

bullet iconLarge Pose 3D Face Reconstruction from a Single Image via Direct Volumetric CNN Regression
Jackson AS, Bulat A, Argyriou V and Tzimiropoulos G
IEEE International Conference on Computer Vision
22-12-2017
bullet iconHow Far are We from Solving the 2D & 3D Face Alignment Problem? (and a Dataset of 230,000 3D Facial Landmarks)
Bulat A and Tzimiropoulos G
2017 IEEE International Conference on Computer Vision (ICCV)
01-10-2017
bullet iconA Functional Regression Approach to Facial Landmark Tracking
Sanchez-Lozano E, Tzimiropoulos G, Martinez B, Torre FDL and Valstar M
Ieee Transactions On Pattern Analysis and Machine Intelligence, Institute of Electrical and Electronics Engineers vol. 40 (9), 2037-2050.  
29-08-2017

2016

bullet iconHuman pose estimation via convolutional part heatmap regression
Bulat A and Tzimiropoulos G
https://link.springer.com/conference/eccv
16-09-2016
bullet iconConvolutional aggregation of local evidence for large pose face alignment
Bulat A and Tzimiropoulos Y
Procedings of the British Machine Vision Conference 2016
01-01-2016

2014

bullet iconGauss-Newton deformable part models for face alignment in-the-wild
Tzimiropoulos G and Pantic M
IEEE Computer Society Conference on Computer Vision and Pattern Recognition
25-09-2014

Grants

solid heart iconGrants of specific relevance to the Centre for Multimodal AI
solid heart iconReliable AI and Data Optimisation
Georgios Tzimiropoulos
£339,312 EPSRC - EU Scheme
01-01-2024 - 31-12-2026