US 12,073,647 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 Jun. 27, 2023, as Appl. No. 18/214,940.
Application 18/214,940 is a continuation of application No. 17/503,439, filed on Oct. 18, 2021, granted, now 11,727,709.
Application 17/503,439 is a continuation of application No. 15/124,500, granted, now 11,188,770, issued on Nov. 30, 2021, previously published as PCT/JP2014/056756, filed on Mar. 13, 2014.
Prior Publication US 2023/0334894 A1, Oct. 19, 2023
Int. Cl. G06V 10/143 (2022.01); G06T 7/90 (2017.01); G06V 40/10 (2022.01); G06V 40/16 (2022.01); 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)] 6 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 perform:
acquiring four images of a person, wherein three images are captured in at least three different infrared wavelength ranges and one image is captured in visible light and wherein the four images are taken simultaneously;
analyzing the visible light image captured by the image acquirer and to detect a face region of the person, wherein the face region includes three different face regions, the three different face regions being a forehead region, a right cheek region, and a left cheek region in the face region; and
determining whether the person is wearing a disguise by determining and judging whether luminance of pixels of the three different face regions satisfy specific relations between the three infrared images based on the three images, wherein the disguise is made of silicone, and
the at least one processor is configured to execute the instructions to perform:
acquiring the images in infrared wavelength ranges from 1161 to 1171 nm, from 1185 to 1195 nm, and from 1209 to 1219 nm separately, and
determining that the specific relations are satisfied when the luminance of the face region in the image in the infrared wavelength range from 1185 to 1195 nm is lower than the luminance of the face region in the images in the infrared wavelength ranges from 1161 to 1171 nm and from 1209 to 1219 nm, wherein the luminance of the face region is defined by the luminance of pixels in said region.