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LiteFat: Lightweight Spatio-Temporal Graph Learning for Real-Time Driver Fatigue Detection

Created by
  • Haebom

Author

Jing Ren, Suyu Ma, Hong Jia, Xiwei Xu, Ivan Lee, Haytham Fayek, Xiaodong Li, Feng Xia

Outline

This paper proposes LiteFat, a lightweight spatiotemporal graph learning model for driver fatigue detection systems. Existing deep learning-based fatigue detection models struggle to be applied to resource-constrained embedded robotic devices (e.g., autonomous vehicles) due to their high computational complexity and latency. LiteFat addresses this issue by transforming streaming video data into a spatiotemporal graph (STG) through facial landmark detection, thereby focusing on key movement patterns and reducing unnecessary data processing. MobileNet extracts facial features and generates a feature matrix for the STG, and a lightweight spatiotemporal graph neural network identifies fatigue signs with minimal processing and low latency. Experimental results on benchmark datasets demonstrate that LiteFat outperforms existing state-of-the-art methods while significantly reducing computational complexity and latency.

Takeaways, Limitations

Takeaways:
Enabling real-time driver fatigue detection in resource-constrained embedded systems.
Suitable for real-time applications due to lower computational complexity and latency compared to existing deep learning models.
Maintains high accuracy despite being a lightweight model.
Limitations:
The performance of the proposed model may depend on the benchmark dataset used. Further validation is needed under various conditions and datasets.
Further research is needed on robustness to various variables in real driving environments (lighting, angle, individual differences, etc.).
The performance of facial feature extraction using MobileNet can impact overall system performance. Research is needed to develop more efficient feature extraction methods.
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