Gaze estimation method

The present invention discloses a method of estimating the line of sight, the method to find the calibration by the calibration error, then the offset correction by the head, the head rotation correction, face estimated distance from the screen plane and the optical axis of the establishment information of the 3D model of the eyeball obtained final to give the position of the gaze point; the present invention is only to a single camera, without any other auxiliary equipment; the present invention, by user corrections links, for the purpose of further improving the estimation accuracy; and by the face plane of the screen, the distance estimation and the head rotation offset correction, to minimize the constraints, to provide users with a comfortable environment, it has better adaptability and accuracy of head movements; on the basis of a real human eye on the eye, it is established estimating the line of sight based on the 3D model to achieve the purpose of improving estimation accuracy; the present method reduces the additional auxiliary equipment, improve the adaptability of the head movement, and an estimated line of sight better accuracy.