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2017 Seventh International Conference on Affective Computing and Intelligent Interaction (ACII) (2017)
San Antonio, TX, USA
Oct. 23, 2017 to Oct. 26, 2017
ISSN: 2156-8111
ISBN: 978-1-5386-0564-6
pp: 389-394
Daniel Baumann , The Computer Laboratory, University of Cambridge, UK
Marwa Mahmoud , The Computer Laboratory, University of Cambridge, UK
Peter Robinson , The Computer Laboratory, University of Cambridge, UK
Eduardo Dias , Jaguar Land Rover, Coventry, UK
Lee Skrypchuk , Jaguar Land Rover, Coventry, UK
ABSTRACT
This paper presents a multimodal approach to in-vehicle classification of driver glances. Driver glance is a strong predictor of cognitive load and is a useful input to many applications in the automotive domain. Six descriptive glance regions are defined and a classifier is trained on video recordings of drivers from a single low-cost camera. Visual features such as head orientation, eye gaze and confidence ratings are extracted, then statistical methods are used to perform failure analysis and calibration on the visual features. Non-visual features such as steering wheel angle and indicator position are extracted from a RaceLogic VBOX system. The approach is evaluated on a dataset containing multiple 60 second samples from 14 participants recorded while driving in a natural environment. We compare our multimodal approach to separate unimodal approaches using both Support Vector Machine (SVM) and Random Forests (RF) classifiers. RF Mean Decrease in Gini Index is used to rank selected features which gives insight into the selected features and improves the classifier performance. We demonstrate that our multimodal approach yields significantly higher results than unimodal approaches. The final model achieves an average F1 score of 70.5% across the six classes.
INDEX TERMS
Vehicles, Visualization, Magnetic heads, Feature extraction, Cameras, Support vector machines, Radio frequency
CITATION

D. Baumann, M. Mahmoud, P. Robinson, E. Dias and L. Skrypchuk, "Multimodal classification of driver glance," 2017 Seventh International Conference on Affective Computing and Intelligent Interaction (ACII), San Antonio, TX, USA, 2017, pp. 389-394.
doi:10.1109/ACII.2017.8273629
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