Intelligent emotion and behavior recognition for online learners using deep affective computing.

Teachers in online classes often have limited visibility into how students are feeling and whether they are staying engaged. This paper presents a practical affective-computing framework that analyses webcam video to recognize both facial emotions and learning-centered behavioral states during live virtual sessions. Student faces are first detected in each frame, then encoded using a convolutional network with an attention module to emphasize informative facial regions. To capture how affect evolves over time, the extracted features are grouped into fixed 16-frame sequences and modelled with a bidirectional GRU to predict four behavioral states: engaged, confused, frustrated and disengaged. We evaluate emotion recognition on the FER2013 benchmark under the standard Train/Public Test/Private Test split, and we evaluate behavior recognition on a publicly available online-learning facial expression dataset (EmoDetect, Kaggle) used for the behavior-recognition experiments from 120 learners (800 annotated temporal segments; inter-annotator agreement κ≈0.75). The proposed model reaches 94.5% accuracy on FER2013 Private Test and achieves 86.9% accuracy with a macro-F1 of 85.4% on the four-class behavior task, improving over facial-expression-only baselines. Profiling further shows that the full pipeline can run at around 25 frames per second on a mid-range GPU, indicating feasibility for real-time monitoring. These results suggest that combining attention-based facial representations with temporal modelling can provide instructors with clearer, webcam-observable indicators of learners' affect and engagement during online teaching.