Title:
視線検出装置及び視線検出方法
Document Type and Number:
Japanese Patent JP6631951
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To detect a sight line direction of a subject in a wide range and maintain detection accuracy of the sight line direction.SOLUTION: A sight line detection device comprises: two cameras 10; light sources 13 each of which is attached to each camera 10; auxiliary light sources 40 which are arranged on a position separated from an optic axis of a lens of each camera 10; a lighting control part 21 for controlling lighting of the light sources 13 and the auxiliary light sources 40; and a calculation part 23 for detecting positions of pupil center and positions of corneal reflection, in which eye images obtained by each of cameras 10 are objects, for calculating a sight line direction of an object person based on the positions of the pupil center and positions of the corneal reflection. The calculation part 23 detects the two positions of corneal reflection by the auxiliary light source 40 in the eye images, when the positions of the corneal reflection cannot be detected by the light sources 13 in the eye image, then estimates the positions of corneal reflection on the light source 13, based on the detected positions, and then calculates the sight line direction of the object using the estimated positions.SELECTED DRAWING: Figure 4
Inventors:
Yoshinobu Ebisawa
Application Number:
JP2015247614A
Publication Date:
January 15, 2020
Filing Date:
December 18, 2015
Export Citation:
Assignee:
National University Corporation Shizuoka University
International Classes:
G06T7/70; A61B3/10; A61B3/113; G06T7/00
Domestic Patent References:
| JP2012065719A |
Foreign References:
| WO2012077713A1 |
Other References:
海老澤 嘉伸 外2名,1点を注視するだけで較正可能な遠隔注視点検出システム,映像情報メディア学会誌 第65巻 第12号,日本,(社)映像情報メディア学会,2011年12月 1日,第65巻 第12号,pp. 92-99,ISSN 1342-6907
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yuji Suwa
Yuji Suwa