Patras, Ioannis

44 publications

NeurIPS 2025 $\boldsymbol{\lambda}$-Orthogonality Regularization for Compatible Representation Learning Simone Ricci, Niccolò Biondi, Federico Pernici, Ioannis Patras, Alberto Del Bimbo

CVPR 2025 AIM-Fair: Advancing Algorithmic Fairness via Selectively Fine-Tuning Biased Models with Contextual Synthetic Data Zengqun Zhao, Ziquan Liu, Yu Cao, Shaogang Gong, Ioannis Patras

CVPRW 2025 An LLM Framework for Long-Form Video Retrieval and Audio-Visual Question Answering Using Qwen2/2.5 Damianos Galanopoulos, Andreas Goulas, Antonios Leventakis, Ioannis Patras, Vasileios Mezaris

TMLR 2025 Data Matters Most: Auditing Social Bias in Contrastive Vision–Language Models Zahraa Al Sahili, Ioannis Patras, Matthew Purver

WACV 2025 Enhancing Zero-Shot Facial Expression Recognition by LLM Knowledge Transfer Zengqun Zhao, Yu Cao, Shaogang Gong, Ioannis Patras

ICCV 2025 Frequency-Guided Diffusion for Training-Free Text-Driven Image Translation Zheng Gao, Jifei Song, Zhensong Zhang, Jiankang Deng, Ioannis Patras

CVPR 2025 ReWind: Understanding Long Videos with Instructed Learnable Memory Anxhelo Diko, Tinghuai Wang, Wassim Swaileh, Shiyan Sun, Ioannis Patras

CVPR 2025 Temporal Score Analysis for Understanding and Correcting Diffusion Artifacts Yu Cao, Zengqun Zhao, Ioannis Patras, Shaogang Gong

NeurIPS 2025 Towards Interpretability Without Sacrifice: Faithful Dense Layer Decomposition with Mixture of Decoders James Oldfield, Shawn Im, Sharon Li, Mihalis Nicolaou, Ioannis Patras, Grigorios Chrysos

ECCVW 2024 Are CLIP Features All You Need for Universal Synthetic Image Origin Attribution? Dario Cioni, Christos Tzelepis, Lorenzo Seidenari, Ioannis Patras

NeurIPS 2024 CemiFace: Center-Based Semi-Hard Synthetic Face Generation for Face Recognition Zhonglin Sun, Siyang Song, Ioannis Patras, Georgios Tzimiropoulos

ECCV 2024 Efficient Unsupervised Visual Representation Learning with Explicit Cluster Balancing Ioannis Maniadis Metaxas, Georgios Tzimiropoulos, Ioannis Patras

WACV 2024 Improving Fairness Using Vision-Language Driven Image Augmentation Moreno D'Incà, Christos Tzelepis, Ioannis Patras, Nicu Sebe

CVPR 2024 LAFS: Landmark-Based Facial Self-Supervised Learning for Face Recognition Zhonglin Sun, Chen Feng, Ioannis Patras, Georgios Tzimiropoulos

ECCVW 2024 MM2Latent: Text-to-Facial Image Generation and Editing in GANs with Multimodal Assistance Debin Meng, Christos Tzelepis, Ioannis Patras, Georgios Tzimiropoulos

ECCVW 2024 MMA-MRNNet: Harnessing Multiple Models of Affect and Dynamic Masked RNN for Precise Facial Expression Intensity Estimation Dimitrios Kollias, Andreas Psaroudakis, Anastasios Arsenos, Paraskevi Theofilou, Chunchang Shao, Guanyu Hu, Ioannis Patras

NeurIPS 2024 Multilinear Mixture of Experts: Scalable Expert Specialization Through Factorization James Oldfield, Markos Georgopoulos, Grigorios G. Chrysos, Christos Tzelepis, Yannis Panagakis, Mihalis A. Nicolaou, Jiankang Deng, Ioannis Patras

CVPR 2024 Self-Supervised Facial Representation Learning with Facial Region Awareness Zheng Gao, Ioannis Patras

WACV 2024 Self-Supervised Representation Learning with Cross-Context Learning Between Global and Hypercolumn Features Zheng Gao, Chen Feng, Ioannis Patras

CVPR 2023 Attribute-Preserving Face Dataset Anonymization via Latent Code Optimization Simone Barattin, Christos Tzelepis, Ioannis Patras, Nicu Sebe

CVPR 2023 DivClust: Controlling Diversity in Deep Clustering Ioannis Maniadis Metaxas, Georgios Tzimiropoulos, Ioannis Patras

ICCV 2023 HyperReenact: One-Shot Reenactment via Jointly Learning to Refine and Retarget Faces Stella Bounareli, Christos Tzelepis, Vasileios Argyriou, Ioannis Patras, Georgios Tzimiropoulos

CVPR 2023 MaskCon: Masked Contrastive Learning for Coarse-Labelled Dataset Chen Feng, Ioannis Patras

ICLR 2023 PandA: Unsupervised Learning of Parts and Appearances in the Feature Maps of GANs James Oldfield, Christos Tzelepis, Yannis Panagakis, Mihalis Nicolaou, Ioannis Patras

NeurIPS 2023 Parts of Speech–Grounded Subspaces in Vision-Language Models James Oldfield, Christos Tzelepis, Yannis Panagakis, Mihalis Nicolaou, Ioannis Patras

CVPRW 2023 Self-Supervised Video Similarity Learning Giorgos Kordopatis-Zilos, Giorgos Tolias, Christos Tzelepis, Ioannis Kompatsiaris, Ioannis Patras, Symeon Papadopoulos

ICCV 2021 WarpedGANSpace: Finding Non-Linear RBF Paths in GAN Latent Space Christos Tzelepis, Georgios Tzimiropoulos, Ioannis Patras

ICCV 2017 Deep Globally Constrained MRFs for Human Pose Estimation Ioannis Marras, Petar Palasek, Ioannis Patras

ICCVW 2017 Near-Duplicate Video Retrieval with Deep Metric Learning Giorgos Kordopatis-Zilos, Symeon Papadopoulos, Ioannis Patras, Yiannis Kompatsiaris

ICCVW 2017 SmileNet: Registration-Free Smiling Face Detection in the Wild Youngkyoon Jang, Hatice Gunes, Ioannis Patras

CVPRW 2016 Automatic Recognition of Emotions and Membership in Group Videos Wenxuan Mou, Hatice Gunes, Ioannis Patras

CVPR 2015 Mirror, Mirror on the Wall, Tell Me, Is the Error Small? Heng Yang, Ioannis Patras

ICCV 2013 Sieving Regression Forest Votes for Facial Feature Detection in the Wild Heng Yang, Ioannis Patras

CVPRW 2012 Learning Codebook Weights for Action Detection B. G. Vijay Kumar, Ioannis Patras

CVPR 2011 Support Tucker Machines Irene Kotsia, Ioannis Patras

ECCV 2010 Coupled Gaussian Process Regression for Pose-Invariant Facial Expression Recognition Ognjen Rudovic, Ioannis Patras, Maja Pantic

CVPRW 2010 Facial Expression Invariant Head Pose Normalization Using Gaussian Process Regression Ognjen Rudovic, Ioannis Patras, Maja Pantic

CVPRW 2009 An Implicit Spatiotemporal Shape Model for Human Activity Localization and Recognition Antonios Oikonomopoulos, Ioannis Patras, Maja Pantic

ICCVW 2009 Discriminative 3D Human Pose Estimation from Monocular Images via Topological Preserving Hierarchical Affinity Clustering Weiwei Guo, Ioannis Patras

CVPRW 2008 B-Spline Polynomial Descriptors for Human Activity Recognition Antonios Oikonomopoulos, Maja Pantic, Ioannis Patras

CVPR 2007 Regression Tracking with Data Relevance Determination Ioannis Patras, Edwin R. Hancock

CVPRW 2006 Kernel-Based Recognition of Human Actions Using Spatiotemporal Salient Points Antonios Oikonomopoulos, Ioannis Patras, Maja Pantic

CVPR 2005 Facial Action Unit Detection Using Probabilistic Actively Learned Support Vector Machines on Tracked Facial Point Data Michel François Valstar, Ioannis Patras, Maja Pantic

CVPRW 2005 Facial Action Unit Detection Using Probabilistic Actively Learned Support Vector Machines on Tracked Facial Point Data Michel François Valstar, Ioannis Patras, Maja Pantic