# US 2022/0036103 A1 · Detecting device, detecting method, and recording medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0036103 A1 - Document ID: US20220036103A1 - Status: Published application - Kind: A1 - Application number: 17/503,439 - Filed: 2021-10-18 - Published: 2022-02-03 - Earliest claimed: 2016-09-08 - Assignees: NEC Corporation - Applicants: NEC Corporation - Inventors: Leiming SU; Mamoru INOUE; Kenta AINO; Hiroaki MORITA - Web page: https://patentgrep.com/patent/US20220036103A1 ## CPC - G06V 40/103: {Static body considered as a whole, e.g. static pedestrian or occupant recognition} - G06T 7/90: Determination of colour characteristics - G06V 10/143: Sensing or illuminating at different wavelengths - G06V 40/166: {using acquisition arrangements} - G06V 40/40: Spoof detection, e.g. liveness detection - G01N 21/314: {with comparison of measurements at specific and non-specific wavelengths (dual wavelength spectrometry G01J3/427)} - G06T 2207/10024: Color image - G06T 2207/30201: Face - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) ## Abstract A light source (11) of a disguising mask detecting device (1) emits light at a person who is a subject. A camera (12) acquires images in multiple different wavelength ranges of reflected light of the light emitted at the person. A face detector (172) detects a face region of the person from the images acquired by the camera (12). A determiner (173) determines that the person is wearing a disguising mask when luminances of the face region in the images satisfy specific relations different from relations exhibited by skin. ## Claims ### Claim 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 an infrared light image in an infrared wavelength range; detect the face region of the person in the visible light image; and determine whether the person is disguised with the silicon mask based on the infrared light image. ### Claim 2 (depends on 1) The detecting device according to claim 1, wherein the processor is further configured to execute instructions to cause the detecting device to: determine whether the person is disguised with the silicon mask based on luminance of the infrared light image. ### Claim 3 (depends on 2) The detecting device according to claim 2, wherein the processor is further configured to execute instructions to cause the detecting device to: detect a characteristic region from the face region of the person in the visible light image; and determine whether the person is disguised based on luminance of a characteristic region of the infrared light image related to the characteristic region of the visible light image. ### Claim 4 (depends on 2) The detecting device according to claim 2, wherein the processor is further configured to execute instructions to cause the detecting device to: determine that the person is disguised in the case where luminance of the face region in the infrared image satisfies specific relation. ### Claim 5 (depends on 2) The detecting device according to claim 2, wherein the processor is further configured to execute instructions to cause the detecting device to: determine that the person is disguised in the case where distribution of luminance of the face region in the infrared image has specific pattern. ### Claim 6 (depends on 3) The detecting device according to claim 3, wherein the processor is further configured to execute instructions to cause the detecting device to: detect at least one of a forehead region in the face region, right cheek region in the face region, and left cheek in the face region as the characteristic region. ### Claim 7 (depends on 1) The detecting device according to claim 1, wherein the processor is further configured to execute instructions to cause the detecting device to: determine whether the person is disguised with the silicon mask based on a plurality of luminance of the face region of the person acquired from each of a plurality of infrared light images captured by a plurality of image devices, the plurality of image devices capturing respectively the person in different wavelength ranges within an infrared band. ### Claim 8 (depends on 2) The detecting device according to claim 2, wherein the processor is further configured to execute instructions to cause the detecting device to: determine that the person is disguised in the case where luminance pattern of the face region of the person in specific wavelength ranges within an infrared band is concave. ### Claim 9 A method of detecting comprising: acquiring a visible light image including a face region of a person; acquiring an infrared light image in an infrared wavelength range; detecting the face region of the person in the visible light image; and determining whether the person is disguised with the silicon mask based on the infrared light image. ### Claim 10 A non-transitory computer readable medium having stored therein a program for performing a method, the method comprising: acquiring a visible light image including a face region of a person; acquiring an infrared light image in an infrared wavelength range; detecting the face region of the person in the visible light image; and determining whether the person is disguised with the silicon mask based on the infrared light image.