activity
20242026
collaborators

16 papers

cs.CV2026

FUSE: Frame-Unified Stress Estimation from Facial Video

Stefanos Gkikas, Thomas Kassiotis, Yang Guo +2

Automatic stress detection from facial video offers a practical path to non-intrusive affect monitoring, yet existing video-based approaches commonly decompose full recordings into…

cs.AI2026

A Multi-Scale Temporal Framework with Dynamic Fusion for EEG-Based Emotion Recognition

Stefanos Gkikas, Yang Guo, Guangliang Li +3

Mixed emotions represent a clinically relevant but still underexplored target for automatic emotion recognition. EEG provides millisecond-level access to neural activity, yet most…

cs.AI2026

Efficient and Interpretable Body-Based Emotion Recognition with Lightweight Temporal Convolutional Networks

Christian Arzate Cruz, Stefanos Gkikas, Houshyar Asadi

Body-based emotion recognition is important for real-time affective systems, but graph-based skeleton models can be computationally expensive. This paper studies whether lightweigh…

cs.CV2026

Explainable graph attention network for stress recognition (StressGAT) via differential action units

Thomas Kassiotis, Stefanos Gkikas, Nikolaos Smyrnis +1

Stress is a dynamic process characterized by significant individual variability in facial expression. Traditional architectures, such as Recurrent Neural Networks (RNNs) and Convol…

cs.CV2026

ReFace: Reorganizing Facial Spatiotemporal Representations for Improved Pain Assessment

Stefanos Gkikas, Yu Fang, Christian Arzate Cruz +2

Automatic pain assessment from facial video remains challenging due to the spatial heterogeneity of pain-related facial cues. This study proposes ReFace, a spatial reorganization p…

cs.CV2026

A Unified Tokenization Framework for Pain Recognition using Heterogeneous 3D Modalities

Stefanos Gkikas, Christian Arzate Cruz, Valentina Becchetti +3

Pain is a complex and pervasive phenomenon affecting a large percentage of the population, and accurate assessment is essential for effective clinical management and intervention.…