Patent ID: 7771049
Filing Date: 2010-08-10
Classification: A61B,G06K

Abstract:
1. A sight line vector detecting method, comprising: emitting LED (light emitting diode) light beams from LED light sources arranged on both sides of a camera to an eye of a subject; photographing the eye of the subject by the camera; acquiring a plane which includes one light source position of the LED light sources, a lens center position of the camera, and a spatial position on a photographed image as to one luminescent spot on a cornea spherical surface of the subject; acquiring another plane which includes the other light source position of the LED light sources, the lens center position of the camera, and a spatial position on the photographed image as to the other luminescent spot on the cornea spherical surface of the subject; acquiring a line of intersection between said two planes; acquiring a center position of a cornea ball which is on the intersection line and satisfies a predetermined condition; and acquiring a center of a pupil for acquiring the sight line vector.