Establishing Random Forest Model Based on Visual Variables to Detect Driving Fatigue
Driving fatigue is a major cause of traffic accidents, and how to detect whether the driver is fatigue has become an urgent issue to be solved, therefore, propose a method of driving fatigue recognition based on visual behavior variables. In order to improve the accuracy of drowsiness detection, 64 professional drivers were recruited to participant in simulated driving experiment, and collect the data of driver’s visual variables and the degree of fatigue. Then the random forest algorithm trains 200 samples of 256 samples and tests the 56 samples data remaining, and compares the predictive state and the real state of the driver. The commonly used evaluation index and ROC curves were used to evaluate the forecasting accuracy and performance of random forest algorithm. These two indicators indicate the performance of the model is excellent. At the same time, the random forest algorithm determines the importance of the four groups of indexes in the evaluation model, the blink time was of the highest importance and the pupil diameter was the lowest.
KeywordsDriving sleepiness Visual variables Random forest algorithm Driving sleepiness assessment Simulated driving test
The authors wish to acknowledge the financial support of the National Natural Science Foundation of China (51208051), Natural Science Basic Research Plan in Shaanxi Province of China (2016JM5036), and the Special Fund for the Basic Scientific Research of Central Colleges, Chang’an University (310821172005).
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