Research
multimodal and trustworthy AI, machine and deep learning, computer vision, affective computing/ behaviour analysis and understanding, medical imaging and healthcare, digital humans
Interests
I am Associate Professor in Multimodal AI at Queen Mary University of London, UK. I am Fellow of Higher Education Academy, holder of Post-Graduate Certificate, IEEE member, BMVA member, AAAI member and IARP associate member.
I obtained the Ph.D. from Imperial College London, where I was a member of the iBUG group and recipient of the prestigious Teaching Fellowship of Imperial College London. I received the M.Sc. from Imperial College London and the Diploma/M.Sc. from the National Technical University of Athens.
I was awarded the 'Sullivan Thesis Prize' by British Machine Vision Association & Society for Pattern Recognition (BMVA) at BMVC 2023, a Prize for UK researchers, based on their Thesis’ originality, academic and industrial impact, breadth & depth.
I am listed in the most recent edition (for 2023) of the Stanford-Elsevier ranking of the World’s Top 2% Scientists, where I am ranked: i) 31,716 out of 223,152 Top Scientists (among all disciplines and fields) globally; ii) 1,275 out of 399,064 Top Scientists in AI & Image Processing globally.
My research and interests span the areas of multimodal (image/video, audio, text, time series, sensors) machine and deep learning, trustworthy (fair, responsible, explainable and ethical) AI, data science and big data, computer vision, affective computing, behavior analysis & generation, digital humans, human machine interaction, medical imaging, mental health & healthcare.
I have co-authored more than 70 publications in the top journals and conferences, such as IJCV, CVPR, ICCV, ECCV, AAAI, TAFFC, ECAI and Neurocomputing. I am inventor of the 'Facial Behaviour Analysis' (2021) patent. My research has been funded and used by many top international companies. I have h-index 36, with over 5400 citations (according to google scholar).
I have been:
i) General Chair of the ABAW series of Workshops and Competitions in CVPR 2025, 2024, 2023 & 2022, ECCV 2024 & 2022, ICCV 2021 and IEEE FG 2020;
ii) co-Organizer & Chair of the DEF-MIA-COV19D series of Competitions and Workshops in CVPR 2024, IEEE ICASSP 2023, ECCV 2022 and ICCV 2021;
iii) co-Organizer of MRAC and REACT Workshops in ACM-MM 2024 & 2023;
iv) Co-organizer of Deepfakes Detection Grand Challenge at ACM-MM 2024.
I am reviewer in most top journals and conferences in my fields. I am reviewer for evaluation of grant proposals (e.g. EU, UK, Canada, Qatar).
You can find more details about me on my personal website:
sites.google.com/view/dimitrioskollias
Publications

Publications of specific relevance to the Centre for Multimodal AI
2025
SAM2CLIP2SAM: Vision Language Model for Segmentation of 3D CT Scans for Covid-19 DetectionKollias D Arsenos A Wingate J Kollias S
Eai Endorsed Transactions on Pervasive Health and Technology,
European Alliance For Innovation N.O. vol. 11
02-04-2025
Rethinking Affect Analysis: A Protocol for Ensuring Fairness and ConsistencyHu G Kollias D Papadopoulou E Tzouveli P Wei J Yang X
IEEE Transactions on Biometrics Behavior and Identity Science,
Institute of Electrical and Electronics Engineers (IEEE) vol. PP (99), 1-1.
10-03-20252024
1M-Deepfakes Detection ChallengeCai Z Dhall A Ghosh S Hayat M Kollias D Stefanov K Tariq U
Proceedings of the 32nd ACM International Conference on Multimedia., 11355-11359.
28-10-2024
MRAC Track 1: 2nd Workshop on Multimodal, Generative and Responsible Affective ComputingGhosh S Cai Z Dhall A Kollias D Goecke R Gedeon T
Proceedings of the 2nd International Workshop on Multimodal and Responsible Affective Computing., 1-6.
28-10-2024
MRAC '24 Chairs' WelcomeTao J Ghosh S Lian Z Cai Z Schuller BW Dhall A Zhao G Kollias D et al.
Mrac 2024 - Proceedings of The 2nd International Workshop on Multimodal and Responsible Affective Computing 28-10-2024
NEFELI: A deep-learning detection and tracking pipeline for enhancing autonomy in Advanced Air MobilityArsenos A Petrongonas E Filippopoulos O Skliros C Kollias D Kollias S
Aerospace Science and Technology,
Elsevier, 109613-109613.
24-09-2024
Can Machine Learning Assist in Diagnosis of Primary Immune Thrombocytopenia? A Feasibility StudyMiah H Kollias D Pedone GL Provan D Chen F
Diagnostics,
Mdpi vol. 14 (13)
26-06-2024
Domain adaptation, Explainability & Fairness in AI for Medical Image Analysis: Diagnosis of COVID-19 based on 3-D Chest CT-scansKollias D Arsenos A Kollias S
2024 IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops (CVPRW). vol. 00, 4907-4914.
18-06-2024
The 6th Affective Behavior Analysis in-the-wild (ABAW) CompetitionKollias D Tzirakis P Cowen A Zafeiriou S Kotsia I Baird A Gagne C Shao C et al.
2024 IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops (CVPRW). vol. 00, 4587-4598.
18-06-2024
CUE-Net: Violence Detection Video Analytics with Spatial Cropping, Enhanced UniformerV2 and Modified Efficient Additive AttentionSenadeera DC Yang X Kollias D Slabaugh G
2024 IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops (CVPRW) 17 Jun 2024 - 18 Jun 2024., 4888-4897.
17-06-2024
Ensuring UAV Safety: A Vision-Only and Real-Time Framework for Collision Avoidance Through Object Detection, Tracking, and Distance EstimationKarampinis V Arsenos A Filippopoulos O Petrongonas E Skliros C Kollias D Kollias S Voulodimos A
2024 International Conference on Unmanned Aircraft Systems (ICUAS). vol. 00, 1072-1079.
07-06-2024
Common Corruptions for Enhancing and Evaluating Robustness in Air-to-Air Visual Object DetectionArsenos A Karampinis V Petrongonas E Skliros C Kollias D Kollias S Voulodimos A
IEEE Robotics and Automation Letters,
Institute of Electrical and Electronics Engineers 03-06-2024
Bridging the Gap: Protocol Towards Fair and Consistent Affect AnalysisHu G Papadopoulou E Kollias D Tzouveli P Wei J Yang X
2024 IEEE 18th International Conference on Automatic Face and Gesture Recognition (FG). vol. 00, 1-9.
31-05-2024
Covid-19 Computer-Aided Diagnosis through AI-Assisted CT Imaging Analysis: Deploying a Medical AI SystemGerogiannis D Arsenos A Kollias D Nikitopoulos D Kollias S
2024 IEEE International Symposium on Biomedical Imaging (ISBI). vol. 00, 1-4.
30-05-2024
COVID‐19 Detection from Computed Tomography Images Using Slice Processing Techniques and a Modified Xception ClassifierMorani K Ayana EK Kollias D Unay D
International Journal of Biomedical Imaging,
Hindawi vol. 2024 (1)
24-05-2024
Uncertainty-Guided Contrastive Learning For Single Source Domain GeneralisationArsenos A Kollias D Petrongonas E Skliros C Kollias S
ICASSP 2024 - 2024 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). vol. 00, 6935-6939.
19-04-2024
Distribution Matching for Multi-Task Learning of Classification Tasks: A Large-Scale Study on Faces & BeyondKollias D Sharmanska V Zafeiriou S
Proceedings of the AAAI Conference on Artificial Intelligence. vol. 38 (3), 2813-2821.
24-03-2024
Robust Facial Reactions Generation: An Emotion-Aware Framework with Modality CompensationHu G Wei J Song S Kollias D Yang X Sun Z Kaloidas O
2024 IEEE International Joint Conference on Biometrics (IJCB). vol. 00, 1-10.
18-01-2024
Detecting COVID-19 in Computed Tomography Images: A Novel Approach Utilizing Segmentation with UNet Architecture, Lung Extraction, and CNN ClassifierMorani K Ayana EK Kollias D Unay D
In
Intelligent Computing,
Springer Nature 450-465.
01-01-20242023
BTDNet: A Multi-Modal Approach for Brain Tumor Radiogenomic ClassificationKollias D Vendal K Gadhavi P Russom S
Applied Sciences,
Mdpi vol. 13 (21)
02-11-2023
A deep neural architecture for harmonizing 3-D input data analysis and decision making in medical imagingKollias D Arsenos A Kollias S
Neurocomputing,
Elsevier vol. 542
01-07-2023
Data-Driven Covid-19 Detection Through Medical ImagingArsenos A Davidhi A Kollias D Prassopoulos P Kollias S
2023 IEEE International Conference on Acoustics, Speech, and Signal Processing Workshops (ICASSPW). vol. 00, 1-5.
10-06-2023
AI-Enabled Analysis of 3-D CT Scans for Diagnosis of COVID-19 & its SeverityKollias D Arsenos A Kollias S
2023 IEEE International Conference on Acoustics, Speech, and Signal Processing Workshops (ICASSPW). vol. 00, 1-5.
10-06-2023
CoviDetector: A transfer learning-based semi supervised approach to detect Covid-19 using CXR imagesChowdhury D Das A Dey A Banerjee S Golec M Kollias D Kumar M Kaur G et al.
Benchcouncil Transactions on Benchmarks, Standards and Evaluations,
Elsevier Bv vol. 3 (2), 100119-100119.
01-06-2023
Ai-mia: Covid-19 detection & severity analysis through medical imagingKollias D
European Conference on Computer Vision (ECCV).
12-02-2023
ABAW: Learning from Synthetic Data & Multi-task Learning ChallengesKollias D
Lecture Notes in Computer Science. vol. 13806, 157-172.
01-01-2023
Medical Image Segmentation: A Review of Modern ArchitecturesSalpea N Tzouveli P Kollias D
In
Computer Vision – Eccv 2022 Workshops,
Springer Nature 691-708.
01-01-2023
Abaw: Valence-arousal estimation, expression recognition, action unit detection & emotional reaction intensity estimation challengesKollias D
Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition.
01-01-2023
Multi-Label Compound Expression Recognition: C-EXPR Database & NetworkKollias D
Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition.
01-01-20232022
A Large Imaging Database and Novel Deep Neural Architecture for Covid-19 DiagnosisArsenos A Kollias D Kollias S
2022 IEEE 14th Image, Video, and Multidimensional Signal Processing Workshop (IVMSP). vol. 00, 1-5.
29-06-2022
A Large Imaging Database and Novel Deep Neural Architecture for Covid-19 DiagnosisKollias D
IEEE 14th Image, Video, and Multidimensional Signal Processing Workshop (IVMSP).
16-06-2022
ABAW: Valence-Arousal Estimation, Expression Recognition, Action Unit Detection & Multi-Task Learning ChallengesKollias D
IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR).
10-06-2022
MixAugment & Mixup: Augmentation Methods for Facial Expression RecognitionKollias D
IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)).
10-06-2022
MimicME: A Large Scale Diverse 4D Database for Facial Expression AnalysisPapaioannou A Gecer B Cheng S Chrysos G Deng J Fotiadou E Kampouris C Kollias D et al.
Lecture Notes in Computer Science. vol. 13668, 467-484.
01-01-20222021
MIA-COV19D: COVID-19 Detection through 3-D Chest CT Image AnalysisKollias D Arsenos A Soukissian L Kollias S
2021 IEEE/CVF International Conference on Computer Vision Workshops (ICCVW). vol. 00, 537-544.
17-10-2021
Analysing Affective Behavior in the second ABAW2 CompetitionKollias D Zafeiriou S
2021 IEEE/CVF International Conference on Computer Vision Workshops (ICCVW). vol. 00, 3645-3653.
17-10-2021
Machine Learning for Predictive Modelling of Ambulance CallsYu M Kollias D Wingate J Siriwardena N Kollias S
Electronics,
Mdpi vol. 10 (4)
18-02-2021
Transparent Adaptation in Deep Medical Image DiagnosisKollias D Vlaxos Y Seferis M Kollia I Sukissian L Wingate J Kollias S
Lecture Notes in Computer Science. vol. 12641, 251-267.
01-01-20212020
Analysing Affective Behavior in the First ABAW 2020 CompetitionKollias D Schulc A Hajiyev E Zafeiriou S
2020 15th IEEE International Conference on Automatic Face and Gesture Recognition (FG 2020). vol. 00, 637-643.
20-11-2020
Exploiting Multi-CNN Features in CNN-RNN Based Dimensional Emotion Recognition on the OMG in-the-Wild DatasetKollias D Zafeiriou S
IEEE Transactions on Affective Computing,
Institute of Electrical and Electronics Engineers (IEEE) vol. 12 (3), 595-606.
04-08-2020
Efficient Context-Aware Lossy Image CompressionXu J Lytchier A Cursio C Kollias D Besenbruch C Zafar A
2020 IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops (CVPRW). vol. 00, 552-554.
19-06-2020
Deep Neural Network Augmentation: Generating Faces for Affect AnalysisKollias D Cheng S Ververas E Kotsia I Zafeiriou S
International Journal of Computer Vision,
Springer Nature vol. 128 (5), 1455-1484.
22-02-2020
Expression, affect, action unit recognition: Aff-wild2, multi-task learning and arcfaceKollias D Zafeiriou S
30th British Machine Vision Conference 2019, BMVC 2019.
01-01-2020
VA-StarGAN: Continuous Affect GenerationKollias D Zafeiriou S
Lecture Notes in Computer Science. vol. 12002, 227-238.
01-01-20202019
Deep Affect Prediction in-the-Wild: Aff-Wild Database and Challenge, Deep Architectures, and BeyondKollias D Tzirakis P Nicolaou MA Papaioannou A Zhao G Schuller B Kotsia I Zafeiriou S
International Journal of Computer Vision,
Springer Nature vol. 127 (6-7), 907-929.
13-02-2019
Photorealistic Facial Synthesis in the Dimensional Affect SpaceKollias D Cheng S Pantic M Zafeiriou S
Lecture Notes in Computer Science. vol. 11130, 475-491.
01-01-20192018
Training Deep Neural Networks with Different Datasets In-the-wild: The Emotion Recognition ParadigmKollias D Zafeiriou S
2018 International Joint Conference on Neural Networks (IJCNN). vol. 00, 1-8.
13-07-2018
Machine Learning for Neurodegenerative Disorder Diagnosis — Survey of Practices and Launch of Benchmark DatasetTagaris A Kollias D Stafylopatis A Tagaris G Kollias S
International Journal of Artificial Intelligence Tools,
World Scientific Publishing vol. 27 (03)
01-05-20182017
Deep neural architectures for prediction in healthcareKollias D Tagaris A Stafylopatis A Kollias S Tagaris G
Complex & Intelligent Systems,
Springer Nature vol. 4 (2), 119-131.
13-11-2017
Adaptation and Contextualization of Deep Neural Network ModelsKollias D Yu M Tagaris A Leontidis G Kollias S Stafylopatis A
2017 IEEE Symposium Series on Computational Intelligence (SSCI)., 1-8.
01-11-2017
Aff-Wild: Valence and Arousal ‘in-the-Wild’ ChallengeZafeiriou S Kollias D Nicolaou MA Papaioannou A Zhao G Kotsia I
2017 IEEE Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)., 1980-1987.
01-07-2017
Recognition of Affect in the Wild Using Deep Neural NetworksKollias D Nicolaou MA Kotsia I Zhao G Zafeiriou S
2017 IEEE Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)., 1972-1979.
01-07-2017
Assessment of Parkinson’s Disease Based on Deep Neural NetworksTagaris A Kollias D Stafylopatis A
Communications in Computer and Information Science. vol. 744, 391-403.
01-01-20172016
On Line Emotion Detection Using Retrainable Deep Neural NetworksKollias D Tagaris A Stafylopatis A
2016 IEEE Symposium Series on Computational Intelligence (SSCI)., 1-8.
01-12-20162015
Interweaving Deep Learning and Semantic Techniques for Emotion Analysis in Human-Machine InteractionKollias D Marandianos G Raouzaiou A Stafvlonatis A-G
2015 10th International Workshop on Semantic and Social Media Adaptation and Personalization (SMAP)., 1-6.
01-11-2015