| 摘要 |
<p>A method and device for detecting a sight-line of a subject and a three-dimensional view-point measurement device. The method for detecting sight-line of a subject uses first cameras (10, 11), a second camera (12), and calculation means. The first cameras (10, 11) measure the position of a pupil relative to a coordinate system. The second camera (12) has a light source provided at a known position in the coordinate system and forming a cornea reflection point, and obtains data of a distance r between the center of a pupil and a cornea reflection point and data of an angle phi of the distance r relative to a coordinate axis of the coordinate system. The calculation means calculates the direction of the sight-line based on information from each of the cameras. In a step of determining a relational formula, e subject is made to gaze at a known point to perform measurement and a relational formula is determined. In a sight-line determining step, the subject is measured again and a sight-line is determined using the relational formula. Further, a three-dimensional view-point measurement device can be constructed so as to simultaneously measure the sight-lines of both eyes by two cameras and two light sources.</p> |
