Patent ID: 7717561
Filing Date: 2010-05-18
Classification: A61B,G02B,G03B,G06K

Abstract:
1. A sight line vector detecting system comprising: an infrared light source for illuminating either an eye or a face; a camera for photographing either the eye or the face; and a computer configured to process photographed image data of said camera so as to calculate a sight line vector; wherein: said computer detects both a true luminance point and a center of a pupil from said photographed image data so as to calculate the sight line vector, wherein said true luminance point is determined as a luminance point in the photographed image data which corresponds to a pupil of the eye regardless of whether the person is wearing spectacles, and even when a different luminance point also appears in the photographed image data in close proximity to the true luminance point due to reflection of light from a portion of the spectacles, said photographing camera is installed at a front view of the face of a person to be photographed, and at a position lower than the position of the eye, and said infrared light source is provided on both a right side and a left side of an optical axis of said photographing camera.