# Deep Learning-Based Real-Time Sequential Facial Expression Analysis Using Geometric Features Source: [Deep Learning-Based Real-Time Sequential Facial Expression Analysis Using Geometric Features]() Collection index: [llms.txt]() Data updated: 2025-12-09T05:00:34.249Z Authors: Talha Enes Koksal, Abdurrahman Gumus Published: 2025-12-05T12:26:31.000Z ## Abstract Facial expression recognition is a crucial component in enhancing human-computer interaction and developing emotion-aware systems. Real-time detection and interpretation of facial expressions have become increasingly important for various applications, from user experience personalization to intelligent surveillance systems. This study presents a novel approach to real-time sequential facial expression recognition using deep learning and geometric features. The proposed method utilizes MediaPipe FaceMesh for rapid and accurate facial landmark detection. Geometric features, including Euclidean distances and angles, are extracted from these landmarks. Temporal dynamics are incorporated by analyzing feature differences between consecutive frames, enabling the detection of onset, apex, and offset phases of expressions. For classification, a ConvLSTM1D network followed by multilayer perceptron blocks is employed. The method's performance was evaluated on multiple publicly available datasets, including CK+, Oulu-CASIA (VIS and NIR), and MMI. Accuracies of 93%, 79%, 77%, and 68% were achieved respectively. Experiments with composite datasets were also conducted to assess the model's generalization capabilities. The approach demonstrated real-time applicability, processing approximately 165 frames per second on consumer-grade hardware. This research contributes to the field of facial expression analysis by providing a fast, accurate, and adaptable solution. The findings highlight the potential for further advancements in emotion-aware technologies and personalized user experiences, paving the way for more sophisticated human-computer interaction systems. To facilitate further research in this field, the complete source code for this study has been made publicly available on GitHub: https://github.com/miralab-ai/facial-expression-analysis. ## Recorded benchmark results A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage. - [Facial Expression Recognition on OuluCASIA](): Facial Expression Recognition; OuluCASIA; Accuracy: 79. - [Facial Expression Recognition on MMI](): Facial Expression Recognition; MMI; Accuracy: 68. - [Facial Expression Recognition on CK+](): Facial Expression Recognition; CK+; Accuracy: 93. ## Original sources and implementation [Original paper]() [PDF]()