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1. EP3757936 - SPOOFING DETECTOR, SPOOFING DETECTION METHOD, AND COMPUTER-READABLE RECORDING MEDIUM

Office
European Patent Office
Application Number 18907036
Application Date 22.02.2018
Publication Number 3757936
Publication Date 30.12.2020
Publication Kind A4
IPC
G06T 7/00
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
G06K 9/00
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
G06K 9/20
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
20Image acquisition
G06K 9/46
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
36Image preprocessing, i.e. processing the image information without deciding about the identity of the image
46Extraction of features or characteristics of the image
G06K 9/62
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
62Methods or arrangements for recognition using electronic means
G06T 1/00
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
1General purpose image data processing
CPC
G06T 7/00
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
G06T 1/00
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
1General purpose image data processing
G06K 9/629
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
62Methods or arrangements for recognition using electronic means
6288Fusion techniques, i.e. combining data from various sources, e.g. sensor fusion
629of extracted features
G06V 40/161
G06V 40/193
G06V 40/40
Applicants NEC CORP
Inventors EBIHARA AKINORI
Designated States
Title
(DE) SPOOFING-DETEKTOR, SPOOFING-DETEKTIONSVERFAHREN UND COMPUTERLESBARES AUFZEICHNUNGSMEDIUM
(EN) SPOOFING DETECTOR, SPOOFING DETECTION METHOD, AND COMPUTER-READABLE RECORDING MEDIUM
(FR) DÉTECTEUR DE MYSTIFICATION, PROCÉDÉ DE DÉTECTION DE MYSTIFICATION ET SUPPORT D'ENREGISTREMENT LISIBLE PAR ORDINATEUR
Abstract
(EN) A spoofing detection apparatus 300 includes a face image obtaining unit 301 that obtains, from an image capture apparatus 310, a first image frame that includes the face of a subject person obtained when a light-emitting apparatus 320 is emitting light and a second image frame that includes the face of the subject person obtained when the light-emitting apparatus 320 is turned off, a face information extraction unit 302 that extract, from the first image frame, information specifying a face portion of the subject person as first face information, and extract, from the second image frame, information specifying a face portion of the subject person as second face information, a feature calculation unit 303 that extracts a portion that includes a bright point formed by reflection in an iris region of an eye of the subject person, from the first image frame, based on the first face information, extracts a portion corresponding to the portion that includes the bright point, from the second image frame, based on the second face information, and calculates, based on the two extracted portions, a feature that is independent of the position of the bright point, and a spoofing determination unit 304 that determines authenticity of subject person based on the feature.
(FR) L’invention concerne un détecteur de mystification qui est pourvu : d'une unité d'acquisition d'image de visage 301 destinée à acquérir, à partir d'un dispositif d'imagerie 310, une première trame d'image comprenant le visage d'une personne qui est obtenue pendant qu'un dispositif électroluminescent 320 émet de la lumière, et une seconde trame d'image comprenant le visage de la personne sujet qui est obtenue pendant que la lumière provenant du dispositif électroluminescent 320 est éteinte ; une unité d'extraction d'informations de visage 302 destinée à extraire des informations qui spécifient la partie de visage de la personne sujet à partir de la première trame d'image en tant que premières informations de visage et à extraire des informations qui spécifient la partie de visage de la personne sujet à partir de la seconde trame d'image en tant que secondes informations de visage ; une unité de calcul de quantité de caractéristiques 303 destinée à extraire une partie qui comprend un point lumineux formé par réflexion au niveau de la zone d'iris de la pupille de la personne sujet à partir de la première trame d'image sur la base des premières informations de visage, à extraire une partie qui correspond à la partie qui comprend le point lumineux à partir de la seconde trame d'image sur la base des secondes informations de visage, et à calculer une quantité de caractéristiques à partir des deux parties extraites qui sont indépendantes de la position du point lumineux ; et une unité de détermination de mystification pour déterminer l'authenticité de la personne sujet sur la base de la quantité de caractéristiques.