US 12,302,005 B2
Determination of light amount of illumination of visible light with which the eye part is irradiated such that pupil size satisfies a size condition
Masato Tsukada, Tokyo (JP); Chisato Funayama, Tokyo (JP); Yuka Ogino, Tokyo (JP); Hiroshi Imai, Tokyo (JP); Keiichi Chono, Tokyo (JP); Emi Kitagawa, Tokyo (JP); Yasuhiko Yoshida, Tokyo (JP); Hiroshi Yamada, Tokyo (JP); Shoji Yachida, Tokyo (JP); and Takashi Shibata, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 17/638,356
Filed by NEC Corporation, Tokyo (JP)
PCT Filed Sep. 4, 2019, PCT No. PCT/JP2019/034714
§ 371(c)(1), (2) Date Feb. 25, 2022,
PCT Pub. No. WO2021/044540, PCT Pub. Date Mar. 11, 2021.
Prior Publication US 2022/0294965 A1, Sep. 15, 2022
Int. Cl. G06T 7/90 (2017.01); G06T 7/60 (2017.01); G06V 40/18 (2022.01); H04N 23/71 (2023.01); H04N 23/74 (2023.01)
CPC H04N 23/74 (2023.01) [G06T 7/60 (2013.01); G06T 7/90 (2017.01); G06V 40/18 (2022.01); G06V 40/193 (2022.01); H04N 23/71 (2023.01); G06T 2207/10048 (2013.01); G06T 2207/10152 (2013.01); G06T 2207/30201 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A control device comprising:
at least one memory storing instructions; and
at least one processor configured to execute the instructions to:
acquire an input image including an eye region that is a region of an eye part;
estimate, from the acquired input image, illuminance of the eye part; and
determine a light amount of illumination of visible light with which the eye part is irradiated in such a way that a pupil size of the eye part satisfies a size condition that the pupil size is a target size based on an illuminance size relationship between the illuminance and the pupil size, wherein
the at least one processor determines, regarding the illuminance of the eye region, the light amount of the illumination in such a way that a glare index determined based on the illuminance satisfies a glare condition,
the glare index is a degree of glare experienced by a person and depends on the illuminance of the eye part, and
the glare condition is that the glare index does not exceed a threshold indicating a limit of permissible glare.