Title:
視線計測装置
Document Type and Number:
Japanese Patent JP6785723
Kind Code:
B2
Abstract:
To provide a visual line measurement device capable of accurately performing visual line measurement without performing approximation calculation with a simple structure.SOLUTION: A visual line measurement device comprises: an image photographing part 12 for photographing a face of a subject; a radiation part 13 for radiating a light to eyes of the subject; and a visual line vector calculation part 46 for, from the face image expressing the face photographed by the image photographing means, based on a corneal reflex image of each eye of the face on the face image, a pupil center position of each eye on the face on the face image, and a predetermined three-dimensional eyeball model, calculating a three-dimensional visual line vector in a camera coordinate system. A focal distance parameter related to a positional relationship between the image photographing part and radiation part, a positional relationship between the image photographing part and eyes, and the image photographing part, satisfies a predetermined restriction condition for regarding that, the photographing direction of the image photographing part and a light radiation direction of the radiation part are coaxial.SELECTED DRAWING: Figure 1
Inventors:
Shinichi Kojima
Takashi Kato
Takashi Kato
Application Number:
JP2017114762A
Publication Date:
November 18, 2020
Filing Date:
June 09, 2017
Export Citation:
Assignee:
Toyota Central R & D Labs.
Aisin Seiki Co., Ltd.
Aisin Seiki Co., Ltd.
International Classes:
A61B3/113
Domestic Patent References:
| JP2016051318A | ||||
| JP2010259605A | ||||
| JP9505756A | ||||
| JP2006051403A | ||||
| JP2011217904A |
Foreign References:
| CN106137117A | ||||
| US20080049185 |
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazunori
Kato Kazunori