GLMDriveNet: Global–local Multimodal Fusion Driving Behavior Classification Network

Driving behavior classification plays an important role in many fields, such as Advanced Driving Assistance System (ADAS), traffic safety, and energy saving. In this paper, we propose a Global–local Multimodal Fusion Driving Behavior Classification Network (GLMDriveNet) which classifies driver behaviors into normal driving, aggressive driving, and drowsy driving. First of all, we design a Global–local Interaction Channel Attention Module (GLI-CAM) to extract effective features in both the roadside image and the spectrogram generated from the current prediction time and its previous four seconds of vehicle speeds. Furthermore, a learnable positional embedding is introduced to fuse the global and local information of the channels for better screening of the extracted features. Secondly, we propose a Multi-scale Feature Representation Fusion Module (MS-FRFM) to associate the high-scale and low-scale information of images and spectrograms and assign different importances for different modal information, making the network more inclined to useful modal information. Our model is evaluated on a public dataset UAH-DriveSet and achieves the best performance (98.4% F1-score on all roads, 97.4% F1-score on the motorway road, and 99.8% F1-score on the secondary road) compared to other state-of-the-art methods. Our model has a very fast speed (142 FPS) and strong generalization which has been verified through extensive experiments on multiple datasets. The code is available on https://github.com/liuwenzhuo1/GLMDrivenet.