Abstract
Vibrations often cause visual fatigue for drivers, and measuring the relative motion between the driver and the display is important for evaluating this visual fatigue. This paper proposes a non-contact videometric measurement method for studying the three-dimensional trajectories of the driver’s eyes based on stereo vision. The feasibility of this method is demonstrated by dynamic calibration. A high-speed dual-camera image acquisition system is used to obtain high-definition images of the face, and the relative trajectories between the eyes and the display are obtained by a set of robust algorithms. The trajectories of the eyes in three-dimensional space are then reconstructed during the vehicle driving process. This new approach provides three-dimensional information and is effective for assessing how vibration affects human visual performance.
Highlights
The vibration of vehicles often causes visual and physical fatigues for the passengers, but drivers encounter these problems
The image acquisition frequency was set to 128 H,z and the acquisition time was set to 2 s, whereupon experimental research was conducted on the 3D trajectories of the eyes during the vehicle driving process
We proposed a non-contact videometric measurement method for evaluating the level of fatigue during the vehicle driving process
Summary
The vibration of vehicles often causes visual and physical fatigues for the passengers, but drivers encounter these problems. Visual fatigue is one of the types of fatigue driving and seriously affects the driver reaction time. Traffic accidents caused by visual fatigue and drowsiness cause considerable economic losses [1,2]. For armored vehicles and tanks, displays are essential for monitoring the surroundings. Military vehicles are routinely equipped with direct-view optical systems, cameras, laser range finders, and thermal imagers to observe the surrounding environment and destroy targets. It is well known that vibrations increase the difficult of reading digital displays, and misjudgments and improper operation under vibration conditions can lead to unsafe incidents
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