Based on binocular vision

a method for estimating the head posture by the change of the relative position of the human eye in two-dimensional and three-dimensional space is designed

and the head posture is divided into 15 kinds.The method of dividing the face area by illumination compensation and skin color model reduces the human eye misdetection caused by the influence of illumination and angle of the traditional cascade classifier; the binocular camera is calibrated for stereo correction and dedistortion

and the image passes through the opposite pole The constrained

re-projection and stereo matching processes obtain parallax

and the depth information is calculated by the triangulation principle according to the parallax of the corresponding human eye position in the left and right images.Through experiments

the human eye positioning effect and ranging precision of the method are good

and the head posture estimation accuracy is high.