US 11,727,709 B2
Detecting device, detecting method, and recording medium
Leiming Su, Tokyo (JP); Mamoru Inoue, Tokyo (JP); Kenta Aino, Tokyo (JP); and Hiroaki Morita, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Filed by NEC Corporation, Tokyo (JP)
Filed on Oct. 18, 2021, as Appl. No. 17/503,439.
Application 17/503,439 is a continuation of application No. 15/124,500, granted, now 11,188,770, previously published as PCT/JP2014/056756, filed on Mar. 13, 2014.
Prior Publication US 2022/0036103 A1, Feb. 3, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G06V 10/143 (2022.01); G06V 40/16 (2022.01); G06V 40/10 (2022.01); G06T 7/90 (2017.01); G06V 40/40 (2022.01); G01N 21/31 (2006.01)
CPC G06V 40/103 (2022.01) [G06T 7/90 (2017.01); G06V 10/143 (2022.01); G06V 40/166 (2022.01); G06V 40/40 (2022.01); G01N 21/314 (2013.01); G06T 2207/10024 (2013.01); G06T 2207/30201 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A detecting device comprising:
at least one memory configured to store instructions; and
at least one processor configured to execute the instructions to:
acquire a visible light image including a face region of a person;
acquire a plurality of infrared light images in an infrared wavelength range, the infrared wavelength range between approximately 1140 nanometers (nm) and 1220 nm, wherein the plurality of infrared light images includes a first infrared light image having a first wavelength in the wavelength range, a second infrared light image having a second wavelength in the wavelength range longer than the first wavelength of the first infrared image, and a third infrared light image having a third wavelength in the wavelength range longer than the second wavelength of the second infrared light image;
detect the face region of the person in the visible light image;
determine that luminance of reflected light in the second image is lower than the luminance of the reflected lighted in the first image and in the third image; and
determine that the person is disguised with a silicon mask, based on the luminance of the reflected light in the second image being lower than the luminance of the reflected light in the first image and in the third image.