Publications

2023 (15)

• Alexandros Lattas, Stylianos Moschoglou, Stylianos Ploumpis, Baris Gecer, Jiankang Deng, Stefanos Zafeiriou, FitMe: Deep Photorealistic 3D Morphable Model Avatars, Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition, pp.13587–13597, 2023
• Rolandos Alexandros Potamias, Stylianos Ploumpis, Stylianos Moschoglou, Vasilios Triantafyllou, Stefanos Zafeiriou, Handy: Towards a high fidelity 3D hand shape and appearance model, Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition, pp.13587–13597, 2023
• Michail Tarasiou, Erik Chavez, Stefanos Zafeiriou, ViTs for SITS: Vision Transformers for Satellite Image Time Series, Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition, pp.13587–13597, 2023
• Michail Christos Doukas, Evangelos Ververas, Viktoriia Sharmanska, Stefanos Zafeiriou, Free-headgan: Neural talking head synthesis with explicit gaze control, IEEE Transactions on Pattern Analysis and Machine Intelligence, 2023
• Francesca Babiloni, Ioannis Marras, Jiankang Deng, Filippos Kokkinos, Matteo Maggioni, Grigorios Chrysos, Philip Torr, Stefanos Zafeiriou, Linear Complexity Self-Attention with 3rd Order Polynomials, IEEE Transactions on Pattern Analysis and Machine Intelligence, 2023
• Konstantinos Panagiotis Alexandridis, Shan Luo, Anh Nguyen, Jiankang Deng, Stefanos Zafeiriou, Inverse Image Frequency for Long-tailed Image Recognition, IEEE Transactions on Image Processing, 2023
• Konstantinos Barmpas, Yannis Panagakis, Dimitrios A Adamos, Nikolaos Laskaris, Stefanos Zafeiriou, BrainWave-Scattering Net: a lightweight network for EEG-based motor imagery recognition, Journal of Neural Engineering, volume 20, pp.056014, 2023
• Zhipeng Du, Miaojing Shi, Jiankang Deng, Stefanos Zafeiriou, Redesigning multi-scale neural network for crowd counting, IEEE Transactions on Image Processing, 2023
• Konstantinos Barmpas, Yannis Panagakis, Stylianos Bakas, Dimitrios A Adamos, Nikolaos Laskaris, Stefanos Zafeiriou, Improving Generalization of CNN-based Motor-Imagery EEG Decoders via Dynamic Convolutions, IEEE Transactions on Neural Systems and Rehabilitation Engineering, 2023
• Youngkyoon Jang, Jiali Zheng, Jifei Song, Helisa Dhamo, Eduardo P'erez-Pellitero, Thomas Tanay, Matteo Maggioni, Richard Shaw, Sibi Catley-Chandar, Yiren Zhou, others, Vschh 2023: A benchmark for the view synthesis challenge of human heads, Proceedings of the IEEE/CVF International Conference on Computer Vision Workshops, 2023
• Jiali Zheng, Youngkyoon Jang, Athanasios Papaioannou, Christos Kampouris, Rolandos Alexandros Potamias, Foivos Paraperas Papantoniou, Efstathios Galanakis, Alevs Leonardis, Stefanos Zafeiriou, ILSH: The imperial light-stage head dataset for human head view synthesis, Proceedings of the IEEE/CVF International Conference on Computer Vision Workshops, 2023
• Francesca Babiloni, Thomas Tanay, Jiankang Deng, Matteo Maggioni, Stefanos Zafeiriou, Factorized Dynamic Fully-Connected Layers for Neural Networks, Proceedings of the IEEE/CVF International Conference on Computer Vision Workshops, 2023
• Guanxiong Sun, Chi Wang, Zhaoyu Zhang, Jiankang Deng, Stefanos Zafeiriou, Yang Hua, Spatio-temporal Prompting Network for Robust Video Feature Extraction, Proceedings of the IEEE/CVF International Conference on Computer Vision, 2023
• Francesca Babiloni, Matteo Maggioni, Thomas Tanay, Jiankang Deng, Ales Leonardis, Stefanos Zafeiriou, Adaptive Spiral Layers for Efficient 3D Representation Learning on Meshes, Proceedings of the IEEE/CVF International Conference on Computer Vision, 2023
• Dimitrios Kollias, Panagiotis Tzirakis, Alice Baird, Alan Cowen, Stefanos Zafeiriou, Abaw: Valence-arousal estimation, expression recognition, action unit detection & emotional reaction intensity estimation challenges, Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops, 2023

2022 (20)

• Stathis Galanakis, Baris Gecer, Alexandros Lattas, Stefanos Zafeiriou, 3DMM-RF: Convolutional Radiance Fields for 3D Face Modeling, arXiv preprint arXiv:2209.07366, 2022
• Rolandos Alexandros Potamias, Stylianos Ploumpis, Stefanos Zafeiriou, Neural mesh simplification, Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition, pp.18583–18592, 2022
• Athanasios Papaioannou, Baris Gecer, Shiyang Cheng, Grigorios G. Chrysos, Jiankang Deng, Eftychia Fotiadou, Christos Kampouris, Dimitrios Kollias, Stylianos Moschoglou, Kritaphat Songsri-In, Stylianos Ploumpis, George Trigeorgis, Panagiotis Tzirakis, Evangelos Ververas, Yuxiang Zhou, Allan Ponniah, Anastasios Roussos, Stefanos Zafeiriou, MimicME: A Large Scale Diverse 4D Database for Facial Expression Analysis, ECCV, 2022
• Yunqi Miao, Alexandros Lattas, Jiankang Deng, Jungong Han, Stefanos Zafeiriou, Physically-Based Face Rendering for NIR-VIS Face Recognition, NeurIPS, 2022
• Jia Guo, Jiankang Deng, Alexandros Lattas, Stefanos Zafeiriou, Sample and Computation Redistribution for Efficient Face Detection, ICLR, 2022
• Alexandros Lattas, Stylianos Moschoglou, Stylianos Ploumpis, Baris Gecer, Abhijeet Ghosh, Stefanos P Zafeiriou, AvatarMe++: Facial shape and BRDF inference with photorealistic rendering-aware GANs, IEEE Transactions on Pattern Analysis & Machine Intelligence, 2022
• Stylianos Ploumpis, Stylianos Moschoglou, Vasileios Triantafyllou, Stefanos Zafeiriou, 3D human tongue reconstruction from single" in-the-wild" images, Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition, pp.2771–2780, 2022
• Qingping Zheng, Jiankang Deng, Zheng Zhu, Ying Li, Stefanos Zafeiriou, Decoupled Multi-task Learning with Cyclical Self-Regulation for Face Parsing, Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition, pp.4156–4165, 2022
• Rolandos Alexandros Potamias, Alexandros Neofytou, Kyriaki Margarita Bintsi, Stefanos Zafeiriou, GraphWalks: Efficient Shape Agnostic Geodesic Shortest Path Estimation, Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops, pp.2968–2977, 2022
• Stefanos Zafeiriou, Michael Bronstein, Taco Cohen, Oriol Vinyals, Le Song, Jure Leskovec, Pietro Li`o, Joan Bruna, Marco Gori, Guest Editorial: Non-Euclidean Machine Learning, IEEE Transactions on Pattern Analysis & Machine Intelligence, volume 44, pp.723–726, 2022
• Michail Tarasiou, Riza Alp Güler, Stefanos Zafeiriou, Context-Self Contrastive Pretraining for Crop Type Semantic Segmentation, IEEE Transactions on Geoscience and Remote Sensing, volume 60, pp.1-17, 2022
• Eimear O’Sullivan, Lara S van de Lande, Athanasios Papaioannou, Richard WF Breakey, N Owase Jeelani, Allan Ponniah, Christian Duncan, Silvia Schievano, Roman H Khonsari, Stefanos Zafeiriou, others, Convolutional mesh autoencoders for the 3-dimensional identification of FGFR-related craniosynostosis, Scientific reports, volume 12, pp.1–8, 2022
• Giorgos Bouritsas, Fabrizio Frasca, Stefanos P Zafeiriou, Michael Bronstein, Improving graph neural network expressivity via subgraph isomorphism counting, IEEE Transactions on Pattern Analysis and Machine Intelligence, 2022
• Konstantinos Barmpas, Yannis Panagakis, Dimitrios Adamos, Nikolaos Laskaris, Stefanos Zafeiriou, A Causal Viewpoint on Motor-Imagery Brainwave Decoding, ICLR2022 Workshop on the Elements of Reasoning: Objects, Structure and Causality, 2022
• Eimear O'Sullivan, Lara S van de Lande, Khalid El Ghoul, Maarten J Koudstaal, Silvia Schievano, Roman H Khonsari, David J Dunaway, Stefanos Zafeiriou, Growth patterns and shape development of the paediatric mandible–A 3D statistical model, Bone reports, volume 16, pp.101528, 2022
• Kaihao Zhang, Dongxu Li, Wenhan Luo, Jingyu Liu, Jiankang Deng, Wei Liu, Stefanos Zafeiriou, EDFace-Celeb-1M: Benchmarking Face Hallucination with a Million-scale Dataset, IEEE Transactions on Pattern Analysis and Machine Intelligence, volume , pp.1-13, 2022
• Xiaobai Li, Shiyang Cheng, Yante Li, Muzammil Behzad, Jie Shen, Stefanos Zafeiriou, Maja Pantic, Guoying Zhao, 4DME: A Spontaneous 4D Micro-Expression Dataset With Multimodalities, IEEE Transactions on Affective Computing, volume , pp.1-18, 2022
• Michail Tarasiou, Stefanos Zafeiriou, Deepsatdata: Building Large Scale Datasets of Satellite Images for Training Machine Learning Models, IGARSS 2022 - 2022 IEEE International Geoscience and Remote Sensing Symposium, volume , pp.4070-4073, 2022
• Rolandos Alexandros Potamias, Giorgos Bouritsas, Stefanos Zafeiriou, Revisiting Point Cloud Simplification: A Learnable Feature Preserving Approach, ECCV, 2022
• Xiaoxi Wei, A. Aldo Faisal, Moritz Grosse-Wentrup, Alexandre Gramfort, Sylvain Chevallier, Vinay Jayaram, Camille Jeunet, Stylianos Bakas, Siegfried Ludwig, Konstantinos Barmpas, Mehdi Bahri, Yannis Panagakis, Nikolaos Laskaris, Dimitrios A. Adamos, Stefanos Zafeiriou, William C. Duong, Stephen M. Gordon, Vernon J. Lawhern, Maciej 'Sliwowski, Vincent Rouanne, Piotr Tempczyk, 2021 BEETL Competition: Advancing Transfer Learning for Subject Independence & Heterogenous EEG Data Sets, Proceedings of the NeurIPS 2021 Competitions and Demonstrations Track, volume 176, pp.205–219, 2022

2021 (15)

• Panagiotis Tzirakis, Jiaxin Chen, Stefanos Zafeiriou, Bjoern Schuller, End-to-end multimodal affect recognition in real-world environments, Information Fusion, volume 68, pp.46–53, 2021
• Jiankang Deng, Jia Guo, Jing Yang, Niannan Xue, Irene Cotsia, Stefanos Zafeiriou, ArcFace: Additive Angular Margin Loss for Deep Face Recognition, IEEE Transactions on Pattern Analysis and Machine Intelligence, 2021
• Mehdi Bahri, Ga'etan Bahl, Stefanos Zafeiriou, Binary Graph Neural Networks, Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition, pp.9492–9501, 2021
• Mehdi Bahri, Eimear OSullivan, Shunwang Gong, Feng Liu, Xiaoming Liu, Michael M Bronstein, Stefanos Zafeiriou, Shape My Face: Registering 3D Face Scans by Surface-to-Surface Translation, International Journal of Computer Vision, pp.1–34, 2021
• Grigorios G. Chrysos, Stylianos Moschoglou, Giorgos Bouritsas, Jiankang Deng, Yannis Panagakis, Stefanos P Zafeiriou, Deep Polynomial Neural Networks, IEEE Transactions on Pattern Analysis and Machine Intelligence, 2021
• Jiankang Deng, Jia Guo, Jing Yang, Alexandros Lattas, Stefanos Zafeiriou, Variational Prototype Learning for Deep Face Recognition, Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition, pp.11906–11915, 2021
• Baris Gecer, Stylianos Ploumpis, Irene Kotsia, Stefanos P Zafeiriou, Fast-GANFIT: Generative Adversarial Network for High Fidelity 3D Face Reconstruction, IEEE Transactions on Pattern Analysis and Machine Intelligence, 2021
• Baris Gecer, Jiankang Deng, Stefanos Zafeiriou, Ostec: One-shot texture completion, Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition, pp.7628–7638, 2021
• Michail Christos Doukas, Mohammad Rami Koujan, Viktoriia Sharmanska, Anastasios Roussos, Stefanos Zafeiriou, Head2Head++: Deep Facial Attributes Re-Targeting, IEEE Transactions on Biometrics, Behavior, and Identity Science, volume 3, pp.31–43, 2021
• Michail Christos Doukas, Stefanos Zafeiriou, Viktoriia Sharmanska, HeadGAN: One-shot Neural Head Synthesis and Editing, Proceedings of the IEEE/CVF Conference on Computer Vision, 2021
• Francesca Babiloni, Ioannis Marras, Filippos Kokkinos, Jiankang Deng, Grigorios Chrysos, Stefanos Zafeiriou, Poly-NL: Linear Complexity Non-local Layers with Polynomials, Proceedings of the IEEE/CVF Conference on Computer Vision, 2021
• Shiya Li, Usman Waheed, Mohanad Bahshwan, Louis Zizhao Wang, Livia Mariadaria Kalossaka, Jiwoo Choi, Franciska Kundrak, Alexandros Lattas, Stylianos Ploumpis, Stefanos Zafeiriou, others, A scalable mass customisation design process for 3D-printed respirator mask to combat COVID-19, Rapid Prototyping Journal, 2021
• Panagiotis Tzirakis, Anh Nguyen, Stefanos Zafeiriou, Bjoern W Schuller, Speech Emotion Recognition Using Semantic Information, ICASSP 2021-2021 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), pp.6279–6283, 2021
• Yannis Panagakis, Jean Kossaifi, Grigorios G Chrysos, James Oldfield, Mihalis A Nicolaou, Anima Anandkumar, Stefanos Zafeiriou, Tensor Methods in Computer Vision and Deep Learning, Proceedings of the IEEE, volume 109, pp.863–890, 2021
• Eimear O'Sullivan, Lara S van de Lande, Anne-Jet C Oosting, Athanasios Papaioannou, N Owase Jeelani, Maarten J Koudstaal, Roman H Khonsari, David J Dunaway, Stefanos Zafeiriou, Silvia Schievano, The 3D skull 0–4 years: A validated, generative, statistical shape model, Bone reports, volume 15, pp.101154, 2021

2020 (25)

• Jiankang Deng, Jia Guo, Evangelos Ververas, Irene Kotsia, Stefanos Zafeiriou, RetinaFace: Single-shot Multi-level Face Localisation in the Wild, Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition, 2020
• Stylianos Ploumpis, Evangelos Ververas, Eimear O' Sullivan, Stylianos Moschoglou, Haoyang Wang, Nick Pears, Will Smith, Baris Gecer, Stefanos Zafeiriou, Towards a complete 3D morphable model of the human head, IEEE Transactions on Pattern Analysis and Machine Intelligence, 2020
• Bin Liu, Niannan Xue, Huifeng Guo, Ruiming Tang, Stefanos Zafeiriou, Xiuqiang He, Zhenguo Li, AutoGroup: Automatic Feature Grouping for Modelling Explicit High-Order Feature Interactions in CTR Prediction, IEEE Transactions on Knowledge and Data Engineering, 2020
• Dimitrios Kollias, Stefanos Zafeiriou, Exploiting multi-CNN features in CNN-RNN based Dimensional Emotion Recognition on the OMG in-the-wild Dataset, IEEE Transactions on Affective Computing, 2020
• M Wang, D Bradley, S Zafeiriou, T Beeler, Facial Expression Synthesis using a Global-Local Multilinear Framework, Computer Graphics Forum (Proceedings of Eurographics), volume 39, pp.235–245, 2020
• Alexandros Rolandros Potamias, Jiali Zhang, Stylianos Ploumpis, Giorgos Bouritsas, Evangelos Ververas, Stefanos Zafeiriou, Learning to Generate Customized Dynamic 3D Facial Expressions, ECCV, 2020
• Haoyang Wang, Riza Alp Guler, Iasonas Kokkinos, George Papandreou, Stefanos Zafeiriou, BLSM: A Bone-Level Skinned Model of the Human Mesh, ECCV, 2020
• Baris Gecer, Alexandros Lattas, Stylianos Ploumpis, Jiankang Deng, Athanasios Papaioannou, Stylianos Moschoglou, Stefanos Zafeiriou, Synthesizing Coupled 3D Face Modalities by Trunk-Branch Generative Adversarial Networks, ECCV, 2020
• Jiankang Deng, Jia Guo, Liu Tongliang, Mingming Gong, Stefanos Zafeiriou, Sub-center ArcFace: Boosting Face Recognition by Large-scale Noisy Web Faces, ECCV, 2020
• Ioannis Marras, Grigorios G Chrysos, Ioannis Alexiou, Gregory Slabaugh, Stefanos Zafeiriou, Reconstructing the Noise Manifold for Image Denoising, ECCV, 2020
• Grigorios G Chrysos, Jean Kossaifi, Stefanos Zafeiriou, RoCGAN: Robust Conditional GAN, International Journal of Computer Vision, pp.1–19, 2020
• Bin Liu, Niannan Xue, Huifeng Guo, Ruiming Tang, Stefanos Zafeiriou, Xiuqiang He, Zhenguo Li, AutoGroup: Automatic Feature Grouping for Modelling Explicit High-Order Feature Interactions in CTR Prediction, Proceedings of the 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval, pp.199–208, 2020
• Evangelos Ververas, Stefanos Zafeiriou, SliderGAN: Synthesizing Expressive Face Images by Sliding 3D Blendshape Parameters, International Journal of Computer Vision, 2020
• Shunwang Gong, Mehdi Bahri, Michael Bronstein, Stefanos Zafeiriou, Geometrically Principled Connections in Graph Neural Networks, Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition, 2020
• Stylianos Moschoglou, Stylianos Ploumpis, Mihalis Nicolaou, Athanasios Papaioannou, Stefanos Zafeiriou, 3DFaceGAN: Adversarial Nets for 3D Face Representation, Generation, and Translation, International Journal of Computer Vision, 2020
• Mohammad Rami Koujan, Michail Christos Doukas, Anastasios Roussos, Stefanos Zafeiriou, Head2Head: Video-based Neural Head Synthesis, Proceedings of the FG'2020, 2020
• Panagiotis Tzirakis, Athanasios Papaioannou, Alexander Lattas, Michail Tarasiou, Björn Schuller, Stefanos Zafeiriou, Synthesising 3D Facial Motion from In-the-Wild Speech, Proceedings of the FG'2020, 2020
• Kritaphat Songsri-in, Stefanos Zafeiriou, Face Video Generation from a Single Image and Landmarks, Proceedings of the FG'2020, 2020
• Dimitrios Kollias, Shiyang Cheng, Evangelos Ververas, Irene Kotsia, Stefanos Zafeiriou, Deep Neural Network Augmentation: Generating Faces for Affect Analysis, International Journal of Computer Vision, pp.1–30, 2020
• Grigorios G. Chrysos, Stylianos Moschoglou, Giorgos Bouritsas, Yannis Panagakis, Jiankang Deng, Stefanos Zafeiriou, Pi-nets: Deep Polynomial Neural Networks, Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition, 2020
• Dominik Kulon, Riza Alp Guler, Iasonas Kokkinos, Michael Bronstein, Stefanos Zafeiriou, Weakly-Supervised Mesh-Convolutional Hand Reconstruction in the Wild, Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition, 2020
• Francesca Babiloni, Ioannis Marras, Gregory Slabaugh, Stefanos Zafeiriou, TESA: Tensor Element Self-Attention via Matricization, Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition, 2020
• Alexandros Lattas, Stylianos Moschoglou, Baris Gecer, Stylianos Ploumpis, Vasileios Triantafyllou, Abhijeet Ghosh, Stefanos Zafeiriou, AvatarMe: Realistically Renderable 3D Facial Reconstruction in-the-wild, Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition, 2020
• Mohammad Rami Koujan, Anastasios Roussos, Stefanos Zafeiriou, DeepFaceFlow: In-the-wild Dense 3D Facial Motion Estimation, Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition, 2020
• Eimear O Sullivan, Lara van de Lande, Antonia Osolos, Silvia Schievano, David J Dunaway, Neil Bulstrode, Stefanos Zafeiriou, Ear Cartilage Inference for Reconstructive Surgery with Convolutional Mesh Autoencoders, International Conference on Medical Image Computing and Computer-Assisted Intervention, pp.76–85, 2020

2019 (17)

• Vladimir Gligorijevic, Yannis Panagakis, Stefanos Zafeiriou, Non-Negative Matrix Factorizations for Multiplex Network Analysis, IEEE Transactions on Pattern Analysis and Machine Intelligence, 2019
• Yuxiang Zhou, Jiankang Deng, Irene Kotsia, Stefanos Zafeiriou, Dense 3D Face Decoding over 2500FPS: Joint Texture and Shape Convolutional Mesh Decoders, CVPR 2019 [Patent Pending], 2019
• Vahan Hovhannisyan, Yiannis Panagakis, Panos Parpas, Stefanos Zafeiriou, Fast Multilevel Algorithms for Compressive Principle Component Pursuit, SIAM Journal on Imaging Sciences, accepted for publication, 2019
• Mehdi Bahri, Yiannis Panagakis, Stefanos Zafeiriou, Robust Kronecker Component Analysis, IEEE Transactions on Pattern Analysis and Machine Intelligence, accepted for publication, 2019
• Jiakang Deng, George Trigeorgis, Yuxiang Zhou, Stefanos Zafeiriou, Joint Multi-view Face Alignment in the Wild, IEEE Transactions on Image Processing, accepted for publication, 2019
• Niannan Xue, Jiankang Deng, Shiyang Cheng, Yannis Panagakis, Stefanos Zafeiriou, Side Information for Face Completion: a Robust PCA Approach, IEEE Transactions on Pattern Analysis and Machine Intelligence, accepted for publication, 2019
• Grigorios Chrysos, Jean Kossaifi, Stefanos Zafeiriou, RoC-GAN: Robust Conditional GAN, ICLR 2019, 2019
• Stylianos Ploumpis, Haoyang Wang, Will Smith, Nick Pears, Stefanos Zafeiriou, Combining 3D Morphable Models: A Large-scale Face-and-Head Model, CVPR 2019 [Patent Pending], 2019
• Baris Gecer, Stylianos Ploumpis, Irene Kotsia, Stefanos Zafeiriou, GANFIT: Generative Adversarial Network Fitting for High Fidelity 3D Face Reconstruction, CVPR 2019 [Patent Pending], 2019
• Panagiotis Tzirakis, Stefanos Zafeiriou, Bj"orn Schuller, Real-world automatic continuous affect recognition from audiovisual signals, Multimodal Behavior Analysis in the Wild, pp.387–406, 2019
• Jiankang Deng, Jia Guo, Niannan Xue, Stefanos Zafeiriou, ArcFace: Additive Angular Margin Loss for Deep Face Recognition, CVPR 2019, 2019
• Mengjiao Wang, Zhixin Shu, Shiyang Cheng, Yannis Panagakis, Dimitris Samaras, Stefanos Zafeiriou, An Adversarial Neuro-Tensorial Approach For Learning Disentangled Representations, International Journal of Computer Vision, accepted for publication, 2019
• Dimitrios Kollias, Panagiotis Tzirakis, Mihalis A Nicolaou, Athanasios Papaioannou, Guoying Zhao, Bj"orn Schuller, Irene Kotsia, Stefanos Zafeiriou, Deep affect prediction in-the-wild: Aff-wild database and challenge, deep architectures, and beyond, International Journal of Computer Vision, accepted for publication, 2019
• Grigorios G Chrysos, Paolo Favaro, Stefanos Zafeiriou, Motion deblurring of faces, International Journal of Computer Vision, accepted for publication, 2019
• Jiankang Deng, Anastasios Roussos, Grigorios Chrysos, Evangelos Ververas, Irene Kotsia, Jie Shen, Stefanos Zafeiriou, The Menpo benchmark for multi-pose 2D and 3D facial landmark localisation and tracking, International Journal of Computer Vision, accepted for publication, 2019
• Haoyang Wang, Stefanos Zafeiriou, Reparameterising 3D Statistical Shape Models, 2019 13th IEEE International Conference on Automatic Face & Gesture Recognition (FG 2019), 2019
• Panagiotis Tzirakis, Mihalis Nicolaou, Bjorn Schuller, Stefanos Zafeiriou, Time-series Clustering with Jointly Learning Deep Representations, Clusters and Temporal Boundaries, 2019 13th IEEE International Conference on Automatic Face & Gesture Recognition (FG 2019), 2019

2018 (19)

• Christos Sagonas, Evangelos Ververas, Ioannis Panagakis, Stefanos Zafeiriou, Recovering Joint and Individual Components in Facial Data, IEEE transactions on Pattern Analysis and Machine Intelligence, accepted for publication, 2018
• James Booth, Anastasios Roussos, Evangelos Ververas, Stylianos Antonakos Epameinondasand Ploumpis, Yannis Panagakis, Stefanos Zafeiriou, 3D Reconstruction of “In-the-Wild” Faces in Images and Videos, IEEE Transactions on Pattern Analysis and Machine Intelligence, accepted for publication, 2018
• Stylianos Moschoglou, Evangelos Ververas, Yiannis Panagakis, Mihalis Nicolaou, Stefanos Zafeiriou, Multi-Attribute Robust Component Analysis for Facial UV Maps, IEEE Journal of Selected Topics in Signal Processing, 2018
• Stylianos Moschoglou, Stylianos Ploumpis, Mihalis Nicolaou, Stefanos Zafeiriou, Multi-Attribute Probabilistic Linear Discriminant Analysis for 3D Facial Shapes, Proceedings of the Asian Conference on Computer Vision (ACCV), volume 4, 2018
• Dimitrios Kollias, Stefanos Zafeiriou, Training deep neural networks with different datasets in-the-wild: the emotion recognition paradigm, 2018 International Joint Conference on Neural Networks (IJCNN), pp.1–8, 2018
• Christos Kampouris, S Zaferiou, Abhijeet Ghosh, Diffuse-specular separation using binary spherical gradient illumination, Proceedings of the 2018 Eurographics Symposium on Rendering: Experimental Ideas & Implementations (EGSR’18), Karlsruhe, Germany, pp.1–4, 2018
• Dimitrios Kollias, Shiyang Cheng, Maja Pantic, Stefanos Zafeiriou, Photorealistic Facial Synthesis in the Dimensional Affect Space, European Conference on Computer Vision, Workshops, pp.475–491, 2018
• Gil Keren, Amr El-Desoky Mousa, Olivier Pietquin, Stefanos Zafeiriou, Bj"orn Schuller, Deep learning for multisensorial and multimodal interaction, The Handbook of Multimodal-Multisensor Interfaces, pp.99–128, 2018
• Jia Guo, Jiankang Deng, Niannan Xue, Stefanos Zafeiriou, Stacked Dense U-Nets with Dual Transformers for Robust Face Alignment, BMVC 2018 [Patent Pending], 2018
• Grigorios Chrysos, Epameinondas Antonakos, Stefanos Zafeiriou, IPST: Incremental Pictorial Structures for Model-free Tracking of Deformable Objects, IEEE Transactions on Image Processing, 2018
• Grigorios Chrysos, Stefanos Zafeiriou, PD2T: Person-specific Detection, Deformable Tracking, IEEE transactions on Pattern Analysis and Machine Intelligence, accepted for publication, 2018
• Jiankang Deng, Shiyang Cheng, Niannan Xue, Yuxiang Zhou, Stefanos Zafeiriou, UV-GAN: Adversarial Facial UV Map Completion for Pose-invariant Face Recognition, CVPR, 2018
• Shiyang Cheng, Irene Kotsia, Maja Pantic, Stefanos Zafeiriou, 4DFAB: A Large Scale 4D Database for Facial Expression Analysis and Biometric Applications, CVPR, 2018
• Krit Songsri-in, George Trigeorgis, Stefanos Zafeiriou, Deep & Deformable: Convolutional Mixtures of Deformable Part-based Models, FG, 2018
• Jiankang Deng, Yuxiang Zhou, Shiyang Cheng, Stefanos Zafeiriou, Cascade Multi-view Hourglass Model for Robust 3D Face Alignment, FG, 2018
• Yuxiang Zhou, Jiankang Deng, Stefanos Zafeiriou, Improve Accurate Pose Alignment and Action Localization by Dense Pose Estimation, FG, 2018
• Mengjiao Wang, Ioannis Panagakis, Patrick Snape, Stefanos Zafeiriou, Disentangling the Modes of Variation in Unlabelled Data, IEEE transactions on Pattern Analysis and Machine Intelligence, accepted for publication, 2018
• Niannan Xue, Jiankang Deng, Ioannis Panagakis, Stefanos Zafeiriou, Informed Non-convex Robust Principal Component Analysis with Features, AAAI, 2018
• George Trigeorgis, Mihalis Nicolaou, Bjoern Schuller, Stefanos Zafeiriou, Deep Canonical Time Warping for simultaneous alignment and representation learning of sequences, IEEE Transactions on Pattern Analysis and Machine Intelligence, Special Issue on Learning with Shared Information for Computer Vision and Multimedia Analysis, accepted, 2018

2017 (32)

• Stefanos Zafeiriou, George Trigeorgis, Grigorios Chrysos, Jiankang Deng, Jie Shen, The Menpo Facial Landmark Localisation Challenge: A step towards the solution, Proceedings of IEEE Int’l Conf. on Computer Vision and Pattern Recognition Workshops (CVPR-W 2017), 2017
• S. Moschoglou, A. Papaioannou, C. Sagonas, J. Deng, I. Kotsia, S. Zafeiriou, AgeDB: the first manually collected, in-the-wild age database, Proceedings of IEEE Int’l Conf. on Computer Vision and Pattern Recognition Workshops (CVPR-W 2017), 2017
• Y. Zhou, S. Zafeiriou, Deformable Models of Ears in-the-wild for Alignment and Recognition, FG'2017, accepted for publication, 2017
• Christos Sagonas, Ioannis Panagakis, Stefanos Zafeiriou, Maja Pantic, Robust Statistical Frontalization of Human and Animal Faces, International journal of computer vision, 2017
• Alessandro Fabris, Mihalis Nicolaou, Irene Kotsia, Stefanos Zafeiriou, Dynamic Probabilistic Linear Discriminant Analysis For Video Classification, ICASSP 2017, accepted for publication, 2017
• Panagiotis Tzirakis, George Trigeorgis, M Nicolaou, Bjorn Schuller, Stefanos Zafeiriou, End-to-End Multimodal Emotion Recognition using Deep Neural Networks, IEEE Journal of Selected Topics in Signal Processing, accepted for publication, 2017
• Joan Alabort-i-Medina, Stefanos Zafeiriou, A Unified Framework for Compositional Fitting of Active Appearance Models, International Journal of Computer Vision, volume 121, 2017
• S. Zafeiriou, D. Kollias, M. A. Nicolaou, A. Papaioannou, G. Zhao, I. Kotsia, Aff-Wild: Valence and Arousal ‘in-the-wild’ Challenge, Proceedings of IEEE Int’l Conf. on Computer Vision and Pattern Recognition Workshops (CVPR-W 2017), 2017
• D. Kollias, M. A. Nicolaou, I. Kotsia, G. Zhao, S. Zafeiriou, Recognition of Affect in the wild using Deep Neural Networks, Proceedings of IEEE Int’l Conf. on Computer Vision and Pattern Recognition Workshops (CVPR-W 2017), 2017
• J. Deng, Y. Zhou, S. Zafeiriou, Marginal Loss for Deep Face Recognition, Proceedings of IEEE Int’l Conf. on Computer Vision and Pattern Recognition Workshops (CVPR-W 2017), 2017
• Ioannis Marras, Symeon Nikitidis, Stefanos Zafeiriou, Maja Pantic, Joint Discriminative Generative Model for Deformable Model Construction and Classification, Proceedings the IEEE Face and Gesture Recognition, 2017
• Grigorios Chrysos, Stefanos Zafeiriou, Deep Face Deblurring, 2017 IEEE Conference on Computer Vision and Pattern Recognition Workshops (CVPRW), 2017
• Lazaros Zafeiriou, Yannis Panagakis, Maja Pantic, Stefanos Zafeiriou, Nonnegative Decompositions for Dynamic Visual Data Analysis, IEEE Transactions on Image Processing, volume 26, pp.5603–5617, 2017
• Athanasios Papaioannou, Epameinondas Antonakos, Stefanos Zafeiriou, Complex representations for learning statistical shape priors, Signal Processing Conference (EUSIPCO), 2017 25th European, pp.1180–1184, 2017
• Stylianos Moschoglou, Mihalis Nicolaou, Yannis Panagakis, Stefanos Zafeiriou, Initializing probabilistic linear discriminant analysis, Signal Processing Conference (EUSIPCO), 2017 25th European, pp.1175–1179, 2017
• Lazaros Zafeiriou, Stefanos Zafeiriou, Maja Pantic, Deep Analysis of Facial Behavioral Dynamics, Computer Vision and Pattern Recognition Workshops (CVPRW), 2017 IEEE Conference on, pp.1988–1996, 2017
• Niannan Xue, George Papamakarios, Mehdi Bahri, Yannis Panagakis, Stefanos Zafeiriou, Robust low-rank tensor modelling using Tucker and CP decomposition, Signal Processing Conference (EUSIPCO), 2017 25th European, pp.1185–1189, 2017
• Stefanos Zafeiriou, Grigorios G Chrysos, Anastasios Roussos, Evangelos Ververas, Jiankang Deng, George Trigeorgis, The 3D Menpo Facial Landmark Tracking Challenge, The 3D Menpo Facial Landmark Tracking Challenge, ICCV-W, 2017
• Riza Alp G"uler, George Trigeorgis, Epameinondas Antonakos, Patrick Snape, Stefanos Zafeiriou, Iasonas Kokkinos, DenseReg: Fully Convolutional Dense Shape Regression In-the-Wild, Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition, 2017
• Shiyang Cheng, Ioannis Marras, Stefanos Zafeiriou, Maja Pantic, Statistical non-rigid ICP algorithm and its application to 3D face alignment, Image and Vision Computing, Special Issue on best of FG'2015, 2017
• Grigorios Chrysos, Epameinondas Antonakos, Patrick Snape, Asthana Akshay, Stefanos Zafeiriou, A Comprehensive Performance Evaluation of Deformable Face Tracking In-the-Wild, International Journal of Computer Vision, accepted for publication, pp.1–22, 2017
• Bj"orn Schuller, Stefan Steidl, Anton Batliner, Elika Bergelson, Jarek Krajewski, Christoph Janott, Andrei Amatuni, Marisa Casillas, Amdanda Seidl, Melanie Soderstrom, others, The INTERSPEECH 2017 computational paralinguistics challenge: Addressee, cold & snoring, Computational Paralinguistics Challenge (ComParE), Interspeech 2017, 2017
• Niannan Xue, Yannis Panagakis, Stefanos Zafeiriou, Side Information in Robust Principal Component Analysis: Algorithms and Applications, ICCV, accepted in publication, 2017
• Mehdi Bahri, Yannis Panagakis, Stefanos Zafeiriou, Robust Kronecker-Decomposable Component Analysis for Low Rank Modeling, ICCV 2017, accepted for publication, 2017
• James Booth, Anastasios Roussos, Allan Ponniah, David Dunaway, Stefanos Zafeiriou, Large Scale 3D Morphable Models, International Journal of Computer Vision, 2017
• George Trigeorgis, Patrick Snape, Iasonas Kokkinos, Stefanos Zafeiriou, Face Normals “in-the-wild” using Fully Convolutional Networks, Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition, 2017
• Christos Sagonas, Ioannis Panagakis, Alina Leidinger, Stefanos Zafeiriou, Robust Joint and Individual Variance Explained, Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition, 2017
• MengJiao Wang, Ioannis Panagakis, Patrick Snape, Stefanos Zafeiriou, Learning the Multilinear Structure of Visual Data, Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition, 2017
• Christos Georgakis, Yannis Panagakis, Stefanos Zafeiriou, Maja Pantic, The Conflict Escalation Resolution (CONFER) Database, Image and Vision Computing, accepted for publication, 2017
• J. Booth, E. Antonakos, S. Ploumpis, G. Trigeorgis, Y. Panagakis, S. Zafeiriou, 3D Face Morphable Models In-the-Wild, Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition, 2017
• Orestis Tsinalis, Paul M Matthews, Yike Guo, Stefanos Zafeiriou, Automatic Sleep Stage Scoring with Single-Channel EEG Using Convolutional Neural Networks, arXiv preprint arXiv:1610.01683, 2017
• George Trigeorgis, Konstantinos Bousmalis, Stefanos Zafeiriou, Bjoern Schuller, A deep matrix factorization method for learning attribute representations, IEEE Transactions on Pattern Analysis and Machine Intelligence, volume 39, pp.417-429, 2017

2016 (16)

• G. Trigeorgis, P. Snape, M. Nicolaou, E. Antonakos, S. Zafeiriou, Mnemonic Descent Method, Proceedings of IEEE International Conference on Computer Vision & Pattern Recognition (CVPR'16), 2016
• G. Trigeorgis, M. Nicolaou, S. Zafeiriou, B. Schuller, Deep Canonical Time Warping, Proceedings of IEEE International Conference on Computer Vision & Pattern Recognition (CVPR'16), 2016
• L. Zafeiriou, E. Antonakos, S. Zafeiriou, M. Pantic, Joint Unsupervised Deformable Spatio-Temporal Alignment of Sequences, Proceedings of IEEE International Conference on Computer Vision & Pattern Recognition (CVPR'16), 2016
• J. Booth, A. Roussos, S. Zafeiriou, A. Ponniah, D. Dunaway, A 3D Morphable Model Model learnt from 10,000 faces, Proceedings of IEEE International Conference on Computer Vision & Pattern Recognition (CVPR'16), 2016
• Y. Zhou, J. Alabort-i-Medina, E. Antonakos, A. Roussos, S. Zafeiriou, Estimating Correspondences of Deformable Objects In-the-wild, Proceedings of IEEE International Conference on Computer Vision & Pattern Recognition (CVPR'16), 2016
• Stefanos Zafeiriou, Athanasios Papaioannou, Irene Kotsia, Mihalis Nicolaou, Guoying Zhao, Facial Affect in-the-wild: A survey and a new database, International Conference on Computer Vision and Pattern Recognition (CVPR) Workshops, Affect "in-the-wild" Workshop, 2016
• Ioannis Panagakis, Mihalis Nicoalou, Stefanos Zafeiriou, Maja Pantic, Robust Correlated and Individual Component Analysis , IEEE Transactions on Pattern Analysis and Machine Intelligence, Special Issue in Multimodal Pose Estimation and Behaviour Analysis, volume 38, pp.1665-1678, 2016
• Vahan Hovhannisyan, Panos Parpas, Stefanos Zafeiriou, MAGMA: Multi-level accelerated gradient mirror descent algorithm for large-scale convex composite minimization, SIAM Journal on Imaging Sciences, accepted for publication, 2016
• Christos Sagonas, Epameinondas Antonakos, Georgios Tzimiropoulos, Stefanos Zafeiriou, Maja Pantic, 300 Faces In-The-Wild Challenge: Database and Results, Image and Vision Computing, Special Issue on Facial Landmark Localisation "in-the-wild, accepted for publication", 2016
• George Trigeorgis, Fabien Ringeval, Raymond Bruckner, E. Marchi, Mihalis Nicolaou, Bjoern Schuller, Stefanos Zafeiriou, End-to-End Speech Emotion Recognition using a Deep Convolutional Recurrent Network, Proceedings IEEE International Conference on Acoustics, Speech, and Signal Processing, (ICASSP 2016), 2016
• Epameinondas Antonakos, Patrick Snape, George Trigeorgis, Stefanos Zafeiriou, Adaptive Cascaded Regression, Image Processing (ICIP), 2016 IEEE International Conference on, 2016
• P. Snape, S. Pszczolkowski, S. Zafeiriou, G. Tzimiropoulos, C. Ledig, D. Rueckert, A Robust Similarity Measure for Volumetric Image Registration with Outliers, Image and Vision Computing, 2016
• Vladimir Gligorijevic, Yannis Panagakis, Stefanos Zafeiriou, Fusion and Community Detection in Multi-layer Graphs, Pattern Recognition (ICPR), 2016 23nd International Conference on, 2016
• Christos Sagonas, Yannis Panagakis, Saritha Arunkumar, Nalini Ratha, Stefanos Zafeiriou, Back to the future: A fully automatic method for robust age progression, Pattern Recognition (ICPR), 2016 23nd International Conference on, 2016
• Christos Kampouris, Stefanos Zafeiriou, Abhijeet Ghosh, Sotirios Malassiotis, Fine-grained material classification using micro-geometry and reflectance, European Conference on Computer Vision, 2016
• Lazaros Zafeiriou, Mihalis Nicolaou, Stefanos Zafeiriou, Symeon Nikitidis, Maja Pantic, Probabilistic Slow Features for Behavior Analysis, IEEE Transactions on Neural Networks and Learning Systems, volume 27, pp.1034–1048, 2016

2015 (14)

• Stefanos Zafeiriou, Cha Zhang, Zhengyou Zhang, A Survey on Face Detection in the wild: past, present and future , Computer Vision and Image Understanding, volume 138, pp. 1-24 , 2015,
• K. Bousmalis, S. Zafeiriou, L.P. Morency, M. Pantic, Z. Ghahramani, Variational Infinite Hidden Conditional Random Field, IEEE Transactions on Pattern Analysis and Machine Intelligence, volume 37, pp.1917- 1929, 2015
• Shiyang Cheng, Ioannis Marras, Stefanos Zafeiriou, Maja Pantic, Active Non-rigid Iterative Closest Point (ICP), Automatic Face & Gesture Recognition and Workshops (FG 2015), 2015 IEEE International Conference on, 2015
• Epameinondas Antonakos, Anastasios Roussos, Stefanos Zafeiriou, A Survey on Mouth Modeling and Analysis for Sign Language Recognition, Automatic Face & Gesture Recognition and Workshops (FG 2015), 2015 IEEE International Conference on, 2015
• P. Snape, S. Zafeiriou, I. Panagakis, Automatic Construction Of Robust Spherical Harmonic Subspaces, IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2015., 2015
• J. Alabort-i-Medina, S. Zafeiriou, Unifying Holistic and Parts-Based Deformable Model Fitting, IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2015., 2015
• E. Antonakos, J. Alabort-i-Medina, S. Zafeiriou, Active Pictorial Structures, IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2015
• Epameinondas Antonakos, Joan Alabort-i-Medina, Georgios Tzimiropoulos, Stefanos Zafeiriou, Feature-Based Lucas-Kanade and Active Appearance Models, IEEE Transactions on Image Processing, volume 24, pp.2617 - 2632, 2015,
• C. Sagonas, I. Panagakis, S. Zafeiriou, M. Pantic, Robust Statistical Face Frontalization, IEEE International Conference on Computer Vision (ICCV), 2015
• P. Snape, A. Roussos, I. Panagakis, S. Zafeiriou, Face Flow, IEEE International Conference on Computer Vision (ICCV), 2015
• G. S. Chrysos, E. Antonakos, S. Zafeiriou, P. Snape, Offline Deformable Face Tracking in Arbitrary Videos, IEEE International Conference on Computer Vision Workshops(ICCV-W), First Facial Landmark Tracking in-the-Wild Challenge, 2015
• J. Shen, S. Zafeiriou, G. S. Chrysos, J. Kossaifi, G. Tzimiropoulos, M. Pantic, The first facial landmark tracking in-the-wild challenge: Benchmark and results, IEEE International Conference on Computer Vision Workshops(ICCV-W), First Facial Landmark Tracking in-the-Wild Challenge, 2015
• Stephan Liwicki, Stefanos Zafeiriou, Maja Pantic, Online Kernel Slow Feature Analysis for Temporal Video Segmentation and Tracking, IEEE Transactions on Image Processing, volume 24, pp.2955 - 2970, 2015
• A. Asthana, S. Zafeiriou, G. Tzimiropoulos, S. Cheng, M. Pantic, From Pixels to Response Maps: Discriminative Image Filtering for Face Alignment in the Wild, IEEE Transactions on Pattern Analysis and Machine Intelligence, volume 37, pp.1312 - 1320, 2015

2014 (29)

• G. Tzimiropoulos, J. Alabort-i-Medina, S. Zafeiriou, M. Pantic, Active Orientation Models for Face Alignment in-the-wild, IEEE Transactions on Information Forensics and Security, Special Issue on Facial Biometrics in-the-wild, volume 9, pp.2024-2034, 2014
• J. Alabort-i-medina, E. Antonakos, J. Booth, P. T. Snape, S. Zafeiriou, Menpo: A Comprehensive Platform for Parametric Image Alignment and Visual Deformable Models, ACM Multimedia, Open Source Software Competition, 2014
• A. Elkins, S. Zafeiriou, M. Pantic, J. Burgoon, Unobtrusive deception detection, The Oxford Handbook of Affective Computing, Oxford University Press, 2014
• S. Pszczolkowski, S. Zafeiriou, C. Ledig, D. Rueckert, A robust similarity measure for nonrigid image registration with outliers, Proceedings of IEEE International Symposium on Biomedical Imaging (ISBI), 2014
• Y. Panagakis, S. Zafeiriou, M. Pantic, Audiovisual Conflict Detection in Political Debates, ECCV-W (Workshop on Spontaneous Facial Behaviour Analysis), 2014
• M. Nicolaou, S. Zafeiriou, M. Pantic, A Unified Framework for Probabilistic Component Analysis, Proceedings of European Conference on Machine Learning (ECML/PKDD), 2014
• L. Zafeiriou, E. Antonakos, S. Zafeiriou, M. Pantic, Joint Unsupervised Face Alignment and Behaviour Analysis, Proceedings of European Conference on Computer Vision (ECCV), 2014
• L. Zafeiriou, S. Nikitidis, S. Zafeiriou, M. Pantic, Slow Features Nonnegative Matrix Factorization for Temporal Data Decomposition, Proceedings of IEEE International Conference on Image Processing (ICIP), 2014
• J. Booth, S. Zafeiriou, Optimal UV Spaces for Facial Morphable Model Construction, Proceedings of IEEE International Conference on Image Processing (ICIP), 2014
• S. Cheng, S. Zafeiriou, A. Asthana, M. Pantic, 3D Facial Geometric Features for Constrained Local Model, Proceedings of IEEE International Conference on Image Processing (ICIP), 2014
• A. Elkins, N. Sorros, S. Zafeiriou, J. Burgoon, M. Pantic, J. F. Nunamaker, Do liars blink differently? Automatic blink detection during deceptive interviews, Proceedings of Forty-Sixth Annual Hawaii International Conference on System Sciences (HICCS), 2014
• S. Cheng, A. Asthana, S. Zafeiriou, J. Shen, M. Pantic, Real-time generic face tracking in the wild with CUDA, Proceedings of the 5th ACM Multimedia Systems Conference, pp.148–151, 2014
• M. A. Nicolaou, Y. Panagakis, S. Zafeiriou, M. Pantic, Robust Canonical Correlation Analysis: Audio-visual Fusion for Learning Continuous Interest, Proceedings of IEEE International Conference Acoustics, Speech and Signal Processing (ICASSP 2014), 2014
• S. Liwicki, M. Pham, S. Zafeiriou, M. Pantic, B. Stenger, Full-Angle Quaternions for Robustly Matching Vectors of 3D Rotations, Proceedings of IEEE International Conference on Computer Vision & Pattern Recognition (CVPR), 2014
• S. Zafeiriou, I. Kotsia, M. Pantic, Unconstrained face recognition, Face Recognition in Adverse Conditions, IGI, 2014
• C. Sagonas, Y. Panagakis, S. Zafeiriou, M. Pantic, RAPS: Robust and Efficient Automatic Construction of Person-Specific Deformable Models, Proceedings of IEEE International Conference on Computer Vision & Pattern Recognition (CVPR), 2014
• A. Asthana, S. Zafeiriou, S. Cheng, M. Pantic, Incremental Face Alignment in the Wild, Proceedings of IEEE International Conference on Computer Vision & Pattern Recognition (CVPR), 2014
• S. Nikitidis, S. Zafeiriou, M. Pantic, Merging SVMs with Linear Discriminant Analysis: A Combined Model, Proceedings of IEEE International Conference on Computer Vision & Pattern Recognition (CVPR), 2014
• P. Snape, S. Zafeiriou, Kernel-PCA analysis of surface normals with application in shape from shading, Proceedings of IEEE International Conference on Computer Vision and Pattern Recognition (CVPR), 2014
• E. Antonakos, J. Alabort-Medina, G. Tzimiropoulos, S. Zafeiriou, HOG Active Appearance Models, Proceedings of IEEE International Conference on Image Processing (ICIP), 2014
• E. Antonakos, S. Zafeiriou, Automatic construction of deformable models in-the-wild, Proceedings of International Conference on Computer Vision and Pattern Recognition (CVPR), 2014
• J. Alabort-Medina, S. Zafeiriou, Bayesian Active Appearance Models, Proceedings of IEEE International Conference on Computer Vision and Pattern Recognition (CVPR), 2014
• G. Trigeorgis, K. Bousmalis, S. Zafeiriou, B. Schuller, A deep Semi-NMF model for learning hidden representations, Proceedings of International Conference on Machine Learning (ICML), 2014
• A. Papaioannou, S. Zafeiriou, Principal Component Analysis With Complex Kernel: The Widely Linear Model, IEEE Transactions on Neural Networks and Learning Systems, Special Issue on Complex and Hyper-Complex Valued Neural Networks., volume 25, pp.1719–1726, 2014
• I. Marras, G. Tzimiropoulos, S. Zafeiriou, M. Pantic, Online learning and fusion of Orientation Appearance Models for robust rigid object tracking, Image and Vision Computing, Special Issue Best of FG' 2013, 2014
• V. Argyriou, S. Zafeiriou, M. Petrou, Optimal illumination directions for faces and rough surfaces for single and multiple light imaging using class-specific prior knowledge, Computer Vision and Image Understanding, volume 125, pp.16–36, 2014
• M. Valstar, S. Zafeiriou, M. Pantic, Facial Action recognition in 2D and 3D, Face Recognition in Adverse Conditions, IGI, 2014
• J. Alabort-i-Medina, Q. Bingqing, S. Zafeiriou, Statistically Learned Deformable Eye Models, ECCV-W (Workshop on Spontaneous Facial Behaviour Analysis), 2014
• G. Papamakarios, Y. Panagakis, S. Zafeiriou, Generalised Scalable Robust Principal Component Analysis, British Machine Vision Conference (BMVC 2014), 2014

2013 (17)

• K. Bousmalis, S. Zafeiriou, L. Morency, M. Pantic, Z. Ghahramani, Variational Hidden Conditional Random Fields with Coupled Dirichlet Process Mixtures, Proceedings of European Conference Machine Learning and Principles and Practice of Knowledge Discovery in Databases (ECML/PKDD), 2013
• V. Argyriou, S. Zafeiriou, B. Villarini, M. Petrou, A sparse representation method for determining the optimal illumination directions in Photometric Stereo, Signal Processing, volume 93, pp.3027–3038, 2013
• A. Asthana, S. Zafeiriou, S. Cheng, M. Pantic, Robust Discriminative Response Map Fitting with Constrained Local Models, Proceedings of IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2013
• A. C. Elkins, Y. Sun, S. Zafeiriou, M. Pantic, The face of an imposter: Computer Vision for Deception Detection, Proceedings of Forty-Sixth Annual Hawaii International Conference on System Sciences (HICSS), 2013
• I. Marras, J. Alabort-Medina, G. Tzimiropoulos, S. Zafeiriou, M. Pantic, Online Learning and Fusion of Orientation Appearance Models for Robust Rigid Object Tracking, Proceedings of the IEEE 10th International Conference on Automatic Face & Gesture Recognition (FG), 2013
• C. Sagonas, G. Tzimiropoulos, S. Zafeiriou, M. Pantic, A semi-automatic methodology for facial landmark annotation, Proceedings of IEEE International Conference Computer Vision and Pattern Recognition (CVPR-W), 5th Workshop on Analysis and Modeling of Faces and Gestures (AMFG), 2013
• C. Sagonas, G. Tzimiropoulos, S. Zafeiriou, M. Pantic, 300 Faces in-the-Wild Challenge: The first facial landmark localization Challenge, Proceedings of IEEE International Conference on Computer Vision (ICCV-W), 300 Faces in-the-Wild Challenge (300-W), 2013
• G. Sandbach, S. Zafeiriou, M. Pantic, Markov Random Field Structures for Facial Action Unit Intensity Estimation, Proceedings of IEEE International Conference Computer Vision (ICCV-W), Workshop on Decoding Subtle Cues from Social Interactions, 2013
• M. A. Nicolaou, S. Zafeiriou, M. Pantic, Correlated-Spaces Regression for Learning Continuous Emotion Dimensions, Proceedings of the 21st ACM International Conference on Multimedia (ACM MM), 2013
• Y. Panagakis, M. A. Nicolaou, S. Zafeiriou, M. Pantic, Robust Canonical Time Warping for the Alignment of Grossly Corrupted Sequences, Proceedings of 26th IEEE Conference on Computer Vision and Pattern Recognition (CVPR), pp.540–547, 2013
• S. Liwicki, G. Tzimiropoulos, S. Zafeiriou, M. Pantic, Euler Principal Component Analysis, International Journal of Computer Vision, volume 101, pp.498–518, 2013
• L. Zafeiriou, M. A. Nicolaou, S. Zafeiriou, S. Nikitidis, M. Pantic, Learning Slow Features for Behaviour Analysis , Proceedings of IEEE International Conference on Computer Vision (ICCV), 2013
• S. Zafeiriou, I. Kotsia, On One-Shot Kernels: Explicit Feature Maps and Properties, Proceedings of IEEE International Conference on Computer Vision (ICCV), 2013
• S. Nikolopoulos, S. Zafeiriou, I. Patras, I. Kompatsiaris, High order pLSA for indexing tagged images, Signal Processing (in press), 2013
• K. Bousmalis, S. Zafeiriou, L. Morency, M. Pantic, Infinite Hidden Conditional Random Fields for Human Behavior Analysis, IEEE Transactions on Neural Networks and Learning Systems, volume 24, pp.170–177, 2013
• Y. Sun, S. Zafeiriou, M. Pantic, A Hybrid System for Online Blink Detection, Proceedings of Forty-Sixth Annual Hawaii International Conference on System Sciences (HICSS), 2013
• S. Zafeiriou, M. Hansen, G. Atkinson, W. Smith, V. Argyriou, M. Petrou, M. Smith, L. Smith, Face Recognition and Verification Using Photometric Stereo: The Photoface Database and a Comprehensive Evaluation, IEEE Transactions on Information Forensics and Security, volume 8, pp.121–135, 2013

2012 (12)

• S. Liwicki, G. Tzimiropoulos, S. Zafeiriou, M. Pantic, Robust Online Subspace Learning with an Indefinite Kernel for Visual Tracking and Recognition, IEEE Transactions on Neural Networks and Learning Systems, volume 23, pp.1624–1636, 2012
• S. Zafeiriou, Subspace Learning in Krein Spaces: Complete Kernel Fisher Discriminant Analysis with Indefinite Kernels, Proceedings of European Conference on Computer Vision (ECCV), 2012
• G. Sandbach, S. Zafeiriou, M. Pantic, D. Rueckert, A dynamic approach to the recognition of 3D facial expressions and its temporal dynamics, Image and Vision Computing, volume 30, pp.762–773, 2012, 3D Facial Behaviour Analysis and Understanding
• G. Sandbach, S. Zafeiriou, M. Pantic, L. Yin, Static and Dynamic 3D Facial Expression Recognition: A Comprehensive Survey, Image and Vision Computing, volume 30, pp.683–697, 2012, 3D Facial Behaviour Analysis and Understanding
• G. Tzimiropoulos, S. Zafeiriou, M. Pantic, Subspace Learning from Image Gradient Orientations, IEEE Transactions on Pattern Analysis and Machine Intelligence, volume 34, pp.2454–2466, 2012
• S. Liwicki, S. Zafeiriou, M. Pantic, Incremental Slow Feature Analysis with Indefinite Kernel for Online Temporal Video Segmentation, Proceedings of 11th Asian Conference on Computer Vision (ACCV), pp.162–176, 2012
• G. Tzimiropoulos, J. Alabort-Medina, S. Zafeiriou, M. Pantic, Generic Active Appearance Models Revisited, Proceedings of 11th Asian Conference on Computer Vision (ACCV), pp.650–663, 2012
• G. Sandbach, S. Zafeiriou, M. Pantic, Binary Pattern Analysis for 3D Facial Action Unit Detection, Proceedings of the British Machine Vision Conference (BMVC 2012), 2012
• G. Sandbach, S. Zafeiriou, M. Pantic, Local Normal Binary Patterns for 3D Facial Action Unit Detection, Proceedings of the IEEE International Conference on Image Processing (ICIP 2012), pp.1813–1816, 2012
• K. Minkov, S. Zafeiriou, M. Pantic, A comparison of different features for automatic eye blinking detection with an application to analysis of deceptive behavior, Proceedings of 5th International Symposium on Communications Control and Signal Processing (ISCCSP), 2012
• N. Markou, S. Zafeiriou, M. Pantic, A Generative Model for Modelling Human Behaviour with an Application to Analysis of Deceptive Behaviour, Proceedings of the Hawaii International Conference on System Sciences (HICSS), Symposium on Rapid Screening Technologies, Deception Detection and Credibility Assessment, 2012
• I. Marras, S. Zafeiriou, G. Tzimiropoulos, Robust learning from normals for 3d face recognition, Proceedings of Computer Vision–European Conference on Computer Vision (ECCV-W'12), Workshops and Demonstrations , pp.230–239, 2012

2011 (12)

• S. Zafeiriou, M. Petrou, 2.5 D Elastic Graph Matching, Computer Vision and Image Understanding, Special Issue on Graph Matching, 2011
• S. Zafeiriou, M. Petrou, Nonnegative tensor factorization as an alternative Csiszar-Tusnady procedure: algorithms, convergence, probabilistic interpretations and novel probabilistic tensor latent variable analysis algorithms, Data Mining and Knowledge Discovery, 2011
• G. Tzimiropoulos, S. Zafeiriou, M. Pantic, Efficient and Robust Parametric Face Alignment, Proceedings of IEEE International Conference on Computer Vision (ICCV) , pp.1847–1854, 2011, Oral
• K. Bousmalis, L. Morency, S. Zafeiriou, M. Pantic, A discriminative non-parametric Bayesian model: Infinite Hidden Conditional Random Fields, Proceedings of Neural Information Processing Systems Workshops (NIPS-W), 2011
• S. Zafeiriou, M. Hansen, G. Atkinson, V. Argyriou, M. Petrou, M. Smith, L. Smith, The Photoface database, Proceedings of IEEE International Conference Computer Vision and Pattern Recognition (CVPR-W), Workshop on Biometrics, 2011
• S. Zafeiriou, M. Pantic, Facial Behaviometrics: the Case of Facial Deformation in Spontenaous Smile/Laughter, Proceedings of IEEE International Conference Computer Vision and Pattern Recognition (CVPR-W), Workshop on CVPR for Human Behaviour Analysis, pp.13–19, 2011
• G. Tzimiropoulos, S. Zafeiriou, M. Pantic, Sparse Representations of Image Gradient Orientations for Visual Recognition and Tracking , Proceedings of IEEE International Conference Computer Vision and Pattern Recognition (CVPR-W’), Workshop on CVPR for Human Behaviour Analysis, pp.26–33, 2011
• S. Zafeiriou, G. Tzimiropoulos, M. Pantic, Subspace Analysis Of Arbitrarily Many Linear Filter Responses with an application to Face Tracking, Proceedings of IEEE International Conference Computer Vision and Pattern Recognition (CVPR-W’11), Workshop on Computer Vision for Computer Games, pp.37–42, 2011
• G. Sandbach, S. Zafeiriou, M. Pantic, D. Rueckert, A Dynamic Approach to the Recognition of 3D Facial Expressions and Their Temporal Models, Proceedings of IEEE International Conference on Automatic Face and Gesture Recognition (FG), Special Session: 3D Facial Behavior Analysis and Understanding, pp.406–413, 2011
• S. Liwicki, S. Zafeiriou, G. Tzimiropoulos, M. Pantic, Fast and Robust Appearance-based Tracking, Proceedings of IEEE International Conference on Automatic Face and Gesture Recognition (FG), pp.507–513, 2011
• G. Tzimiropoulos, S. Zafeiriou, M. Pantic, The Principal Component of Image Gradient Orientations with application to Face Recognition, Proceedings of IEEE International Conference on Automatic Face and Gesture Recognition (FG), pp.553–558, 2011
• F. Eyben, S. Petridis, B. Schuller, G. Tzimiropoulos, S. Zafeiriou, Audiovisual classification of vocal outbursts in human conversation using long-short-term memory networks, Proceedings of IEEE International Conference Acoustics, Speech and Signal Processing (ICASSP), pp.5844–5847, 2011

2010 (6)

• G. Tzimiropoulos, V. Argyriou, S. Zafeiriou, T. Stathaki, Robust FFT-Based Scale-Invariant Image Registration with Image Gradients, IEEE Transactions on Pattern Analysis and Machine Intelligence, volume 32, pp.1899–1906, 2010
• S. Zafeiriou, M. Petrou, Nonlinear non-negative component analysis algorithms, IEEE Transactions on Image Processing, volume 19, pp.1050–1066, 2010
• S. Nikolopoulos, S. Zafeiriou, N. Nikolaidis, I. Pitas, Forensic Image replica detection using R-tree and linear discriminant analysis, Pattern Recognition, volume 43, pp.636–649, 2010
• G. Toderici, G. Passalis, S. Zafeiriou, G. Tzimiropoulos, M. Petrou, T. Theoharis, I. Kakadiaris, Bidirectional relighting for 3D-aided 2D Face Recognition, Proceedings of IEEE International Conference on Computer Vision and Pattern Recognition (CVPR), pp.2721–2728, 2010
• S. Zafeiriou, N. Laskaris, Nonnegative embeddings and projections for dimensionality reduction and information visualization, Proceedings of IEEE International Conference on Pattern Recognition (ICPR), 2010
• S. Zafeiriou, M.Petrou, Sparse representations for facial expression recognition via l_1 optimization, Proceedings of IEEE International Conference on Computer Vision and Pattern Recognition-1st Workshop for Computer Vision for Computer Games (CVPR-CVCG), 2010

2009 (6)

• S. Zafeiriou, Algorithms for Nonnegative Tensor Factorization, Tensors in Image Processing and Computer Vision, Springer, 2009
• N. Laskaris, S. Zafeiriou, L. Garefa, On the individuality of random time interval generation, Pattern Recognition, volume 42, pp.2787–2796, 2009
• S. Zafeiriou, Discriminant nonnegative tensor factorization algorithms, IEEE Transactions on Neural Networks, volume 20, pp.217–235, 2009
• I. Kotsia, S. Zafeiriou, I. Pitas, A novel class of multiclass classifiers based on the minimization of the within-class variance, IEEE Transactions on Neural Networks, volume 20, pp.14–34, 2009
• S. Zafeiriou, M. Petrou, Nonlinear Nonnegative Component Analysis, Proceedings of IEEE International Conference on Computer Vision and Pattern Recognition (CVPR), 2009
• S. Zafeiriou, M. Petrou, V. Argyriou, 2.5D Elastic graph matching , Proceedings of IEEE International Conference on Computer Vision-Workshop on 3D representation for recognition (ICCV-3dRR), 2009

2008 (10)

• S. Zafeiriou, I. Pitas, Discriminant graph structures for facial expression recognition, IEEE Transactions on Multimedia, volume 10, pp.1528–1540, 2008
• S. Nikitidis, S. Zafeiriou, I. Pitas, Camera Motion Estimation Using a Novel Online Vector Field Model in Particle Filters, IEEE Transactions on Circuits and Systems for Video Technology, volume 18, pp.1028–1039, 2008
• N. Laskaris, S. Zafeiriou, Beyond FCM: Graph-theoretic post-processing algorithms for learning and representing the data structure, Pattern Recognition, volume 41, pp.2630–2644, 2008
• S. Zafeiriou, N. Laskaris, On the Improvement of Support Vector Techniques for Clustering by Means of Whitening Transform, IEEE Signal Processing Letters, volume 15, pp.198–201, 2008
• I. Kotsia, S. Zafeiriou, I. Pitas, Texture and shape information fusion for facial expression and facial action unit recognition, Pattern Recognition, volume 41, pp.833–851, 2008
• S. Zafeiriou, A. Tefas, I. Pitas, Gender determination using a Support Vector Machine variant, Proceedings of European Signal Processing Conference (EUSIPCO), 2008
• G. Goudelis, S. Zafeiriou, I. Pitas, Motivating class-specific nonlinear projections for face verification, Proceedings of IEEE International Conference on Image Processing (ICIP), 2008
• I. Kotsia, S. Zafeiriou, I. Pitas, Discriminant Non-negative Matrix Factorization and Projected Gradients for Frontal Face Verification, Proceedings of The First COST 2101 Workshop on Biometrics and Identity Management (BIOID), 2008
• S. Nikitidis, S. Zafeiriou, I. Pitas, Camera motion estimation using particle filters, Proceedings of 3rd International Conference on Computer Vision Theory and Applications (VISAPP), 2008
• I. Kotsia, S. Zafeiriou, N. Nikolaidis, I. Pitas, Texture and Shape Information Fusion for Facial Action Unit Recognition, Proceedings of The First International Conference on Advances in Computer-Human Interaction (ACHI 08) , 2008

2007 (10)

• I. Kotsia, S. Zafeiriou, I. Pitas, A novel discriminant non-negative matrix factorization algorithm with applications to facial image characterization problems, IEEE Transactions on Information Forensics and Security, volume 2, pp.588–595, 2007
• G. Goudelis, S. Zafeiriou, A. Tefas, I. Pitas, Class-specific kernel-discriminant analysis for face verification, Information Forensics and Security, IEEE Transactions on, volume 2, pp.570–587, 2007
• S. Zafeiriou, A. Tefas, I. Pitas, Minimum class variance support vector machines, IEEE Transactions on Image Processing, volume 16, pp.2551–2564, 2007
• S. Zafeiriou, A. Tefas, I. Pitas, The discriminant elastic graph matching algorithm applied to frontal face verification, Pattern Recognition, volume 40, pp.2798–2810, 2007
• S. Zafeiriou, A. Tefas, I. Pitas, Learning discriminant person-specific facial models using expandable graphs, IEEE Transactions on Information Forensics and Security, volume 2, pp.55–68, 2007
• G. Goudelis, S. Zafeiriou, A. Tefas, I. Pitas, A novel Kernel discriminant analysis for face verification, Proceedings of IEEE International Conference on Image Processing (ICIP), 2007
• S. Zafeiriou, A. Tefas, I. Pitas, A novel class of decision surfaces based on minimization of within class variance, Proceedings of IEEE Workshop on Machine Learning for Signal Processing (MLSP), 2007
• I. Kotsia, S. Zafeiriou, N. Nikolaidis, I. Pitas, Facial Expression Recognition using Metric Multidimensional Scaling and Support Vector Machines, Proceedings of IEEE Workshop on Machine Learning for Signal Processing (MLSP), 2007
• S. Zafeiriou, A. Tefas, I. Pitas, Discriminant graph structures for face verification, Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2007
• S. Zafeiriou, A. Tefas, I. Pitas, Advances in elastic graph matching for face verification, Proceedings of IEEE Symposium on Computational Intelligence in Image and Signal Processing (CIISP), 2007

2006 (2)

• S. Zafeiriou, A. Tefas, I. Buciu, I. Pitas, Exploiting discriminant information in nonnegative matrix factorization with application to frontal face verification, IEEE Transactions on Neural Networks, volume 17, pp.683–695, 2006
• S. Nikolopoulos, S. Zafeiriou, N. Nikolaidis, I. Pitas, Image replica detection using R-trees and Linear Discriminant Analysis, Proceedings of IEEE International Conference on Multimedia and Expo (ICME), 2006

2005 (6)

• S. Zafeiriou, A. Tefas, I. Pitas, Blind robust watermarking schemes for copyright protection of 3D mesh objects, IEEE Transactions on Visualization and Computer Graphics, pp.596–607, 2005
• S. Zafeiriou, A. Tefas, I. Pitas, Discriminant NMFfaces for frontal face verification, Proceedings of IEEE International Workshop on Machine Learning for Signal Processing (MLSP), 2005
• S. Zafeiriou, A. Tefas, I. Bubiu, I. Pitas, Class-specific discriminant non-negative matrix factorization for frontal face verification, Proceedings of International Conference on Advances in Pattern Recognition (ICAPR), 2005
• S. Zafeiriou, A. Tefas, I. Pitas, Linear discriminant feature selection techniques in elastic graph matching, Proceedings of European Signal Processing Conference (EURASIP), 2005
• S. Zafeiriou, A. Tefas, I. Pitas, Exploiting discriminant information in elastic graph matching, Proceedings of International Conference on Image Processing (ICIP), 2005
• S. Zafeiriou, A. Tefas, I. Pitas, Elastic graph matching versus linear subspace methods for frontal face verification, Proceedings of IEEE International Workshop on Nonlinear Signal and Image Processing (NSIP), 2005

2004 (1)

• S. Zafeiriou, A. Tefas, I. Pitas, A blind robust watermarking scheme for copyright protection of 3D mesh models, Proceedings of IEEE International Conference on Image Processing (ICIP), 2004