Evaluation of the Driver's Temporary Arousal Level by Facial Skin Thermogram-Effect of Surrounding Temperature and Wind on the Thermogram-

Abstract

Recently, established transportation system is actively done to the research on ITS that starts achieving a more excellent traffic environment by using most-advanced information and communications technology. We studied the method of evaluating arousal level of human based on facial skin thermal image analysis. Facial skin thermal image can be easily measured by noncontact with an infrared rays thermography device. The temperature of the face skin depends on the blood flow. In the case of the sympathetic nerve has a superiority over the parasympathetic nerve, peripheral vasoconstriction constrict, the flow decreases and the temperature decreases. The other way parasympathetic nerve has a superiority over the sympathetic nerve, rise the temperature of nasal. However it is said that facial skin thermogram have a susceptibility to environmental variation. Therefore in this paper, how much the facial skin thermogram effected the influence of the outside environment was examined. Figure 1 shows the effect of the disturbance on facial skin thermogram at rest. Both the nose and the forehead have been decreased rapidly disturbance simultaneously. However, the influence of the outside environment was able to be removed by taking the difference between the nose and the forehead. Figure 2 shows the change of temperature on tracking task. An autonomic activity was able to be measured by the change of the temperature of the nose when there was a change in the outside environment.Consepuently the tolerance to the environment of the facial skin thermogram was shown.

Color influences on human beings evaluated by nasal skin temperature

“…From this In previous studies, the stimulation of subjects by tasks or loads resulted in calculation problems, 4,5 a metallic scratching noise, 7 and diffi cult tasks. 8 The reaction of NST to these stimulations decreased quickly immediately after starting the stimulation. However, NST decreased after Ptime in this experiment.…”

A few comments on visual systems of a ship handling simulator for sea pilot training: Training for entering a port

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A characteristic of a navigator’s mental workload based on nasal Temperature

“…Meanwhile, the forehead temperature doesn't change for various mental workload conditions [14], [15]. Therefore, the N-F temperature is better to evaluate the mental workload on the ship's bridge where it is difficult to control the temperature.…”