Title:
CORNEA CENTER DETECTION DEVICE AND GAZE DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/217026
Kind Code:
A1
Abstract:
[Problem] To enlarge a range wherein it is possible to detect corneal reflected light by preventing a situation in which it is not possible to acquire an image of the corneal reflected light owing to such factors as a rotation angle of a subject's eyeball. [Solution] Provided is a cornea center detection device, in which a first camera and a second camera are positioned in mutual proximity, and a first light source and a second light source are positioned at a mutual remove such that emission lights respectively therefrom enter the subject's eye at different positions. Further, the cornea center detection device comprises: a corneal reflected light detection unit which detects corneal reflected light in images which the first camera and the second camera have acquired; a cornea center computation unit which computes a cornea center on the basis of the images which the first camera and the second camera have acquired; and a light source control unit which switches the driving of the first light source and the second light source. With regard to the detection which is performed by the corneal reflected light detection unit, the light source control unit interrupts the driving of either of the first light source and the second light source and causes the driving of the other thereof, if the corneal reflected light has not been detected in the images which the first camera and the second camera have acquired.
Inventors:
YAMASHITA TATSUMARO (JP)
KAWAUCHI TAKAHIRO (JP)
KAMATA TOMOYA (JP)
SATO RYOHEI (JP)
KAWAUCHI TAKAHIRO (JP)
KAMATA TOMOYA (JP)
SATO RYOHEI (JP)
Application Number:
PCT/JP2017/007901
Publication Date:
December 21, 2017
Filing Date:
February 28, 2017
Export Citation:
Assignee:
ALPS ELECTRIC CO LTD (JP)
International Classes:
G06F3/0346; A61B3/113; G01B11/00; G01B11/26
Foreign References:
| JP2012065719A | 2012-04-05 | |||
| JP2006167256A | 2006-06-29 | |||
| JP2016051312A | 2016-04-11 | |||
| JPH08154899A | 1996-06-18 | |||
| JP2005185431A | 2005-07-14 | |||
| JP2016085588A | 2016-05-19 |
Attorney, Agent or Firm:
NOZAKI, Teruo (JP)
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