Hierarchical deep neural networks to detect driver drowsiness

Driver drowsiness is one of the main reasons for deadly accidents, especially on suburban roads. Researchers have used many methods for analyzing videos and detecting drowsiness, and the most up-to-date methods among them are using deep learning. This paper proposes a hierarchical framework comprising deep networks with split spatial and temporal phases referred to as hierarchical deep drowsiness detection (HDDD) network. The proposed method uses ResNet to detect the driver's face, lighting condition, and whether the driver is wearing glasses or not. This phase also causes a significant increase in eyes and mouth detection percentage in the next stage. Afterward, the LSTM network is used to take advantage of temporal information between the frames. The average accuracy of the drowsiness detection system is reached 87.19 percent.