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Among existing head orientation methods, two-dimensional image measurement method has been widely used.
However, this method is greatly influenced by ambient light, and the angle of rotation could be too wide to measure. To
avoid this, this study uses three-dimensional image measurement technology which is based on stripy light to collect
three-dimensional data of human face, and head orientation can be detected by analysis. The author 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. In this experiment, the head model is used as the measurement
object, and the experimental device based on visible light projection is constructed. The experimental results show
that under the condition of infrared light projection, the method adopted in this paper can meet the measurement requirement
in the range of ± 50 degrees.