The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 17, 2013
Filed:
Sep. 25, 2009
Sotaro Tsukizawa, Kanagawa, JP;
Kensuke Maruya, Kanagawa, JP;
Sotaro Tsukizawa, Kanagawa, JP;
Kensuke Maruya, Kanagawa, JP;
Panasonic Corporation, Osaka, JP;
Abstract
Provided are a line-of-sight direction determination device and a line-of-sight direction determination method capable of highly precisely and accurately determining a line-of-sight direction from immediately after start of measurement without indication of an object to be carefully observed and adjustment work done in advance. The line-of-sight direction determination device () comprises: a line-symmetric position determination unit () for determining that the corneal reflection image of a left eye or a right eye is located at a line-symmetric position with respect to the center line of the pupils of the right and left eyes; and a line-of-sight direction determination unit () for determining, from the line-symmetric position determination result, a line-of-sight direction at a specific position including the installation position of an imaging unit () or an irradiation unit () at the substantially same position as the imaging unit (). The line-of-sight direction determination device () determines that the corneal reflection image is line symmetric and, from this line symmetry property, determines a specific line-of-sight direction.