Based On The 3 D Image Measuring Drivers Face Rotation Angle Measurement Method Research

The accidents which happened because of driver’s carelessness during driving occupy about15%of total traffic accidents. In order to prevent this kind of accident, the detection of driver’s head orientation has become a very popular method in recent years.Among existing head orientation methods, two-dimensional image measurement is commonly utilized in which driver’s face is captured and analyzed. However, it can be easily affected by environmental light. Besides, the angle of rotation could be too wide to measure.To avoid this, this study uses three-dimensional image measurement which is based on stripy light to collect three-dimensional data of human face, and thereby head orientation can be detected by analysis.This essay takes advantage of the human nose as a feature point, and puts forward a method to detect the peak point of the nose from the wing. Finally, the head orientation can be detected through the nose information.It uses human head model as the measuring object, makes up experiment equipment based on visible light and infrared rays. Among the range of90degree, the former average difference is2.3degree and maximum6degree. And the latter average difference is1.3degree,3degree maximum within50degree range. Experimental results based on infrared rays within both50degree left and right prove that the proposed method is effective.