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1. WO2018234384 - DETECTING ARTIFICIAL FACIAL IMAGES USING FACIAL LANDMARKS

Publication Number WO/2018/234384
Publication Date 27.12.2018
International Application No. PCT/EP2018/066432
International Filing Date 20.06.2018
IPC
G06K 9/00 2006.1
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
CPC
G06K 9/6269
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
6267Classification techniques
6268relating to the classification paradigm, e.g. parametric or non-parametric approaches
6269based on the distance between the decision surface and training patterns lying on the boundary of the class cluster, e.g. support vector machines
G06N 20/10
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
NCOMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS
20Machine learning
10using kernel methods, e.g. support vector machines [SVM]
G06V 40/165
G06V 40/167
G06V 40/171
G06V 40/172
Applicants
  • HOCHSCHULE DARMSTADT [DE]/[DE]
Inventors
  • BUDHRANI BUDHRANI, Dhanesh
  • SCHERHAG, Ulrich
  • GOMEZ-BARRERO, Marta
  • BUSCH, Christoph
Agents
  • BOEHMERT & BOEHMERT ANWALTSPARTNERSCHAFT MBB
Priority Data
10 2017 113 589.820.06.2017DE
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) DETECTING ARTIFICIAL FACIAL IMAGES USING FACIAL LANDMARKS
(FR) DÉTECTION D'IMAGES FACIALES ARTIFICIELLES À L'AIDE DE REPÈRES FACIAUX
Abstract
(EN) A method and a device for classifying facial images are described. The method includes retrieving a first plurality of facial landmarks of a provided facial image associated with a subject, determining a corresponding second plurality of facial landmarks of a captured facial image of the subject, extracting at least one feature vector based on differences between at least some of the first plurality of facial landmarks and corresponding facial landmarks of the second plurality of facial landmarks, wherein at least some values of the at least one feature vector represent angular values of facial landmarks, and supplying the at least one feature vector to a classifier to classify the provided facial image as a real facial image of the subject or as an artificial facial image.
(FR) La présente invention concerne un procédé et un dispositif de classification d’images faciales. Le procédé consiste à récupérer une première pluralité de repères faciaux d'une image faciale fournie associée à un sujet, à déterminer une seconde pluralité correspondante de repères faciaux d'une image faciale capturée du sujet, à extraire au moins un vecteur de caractéristique sur la base des différences entre au moins certains repères de la première pluralité de repères faciaux et des repères faciaux correspondants de la seconde pluralité de repères faciaux, au moins certaines valeurs dudit vecteur de caractéristique représentant des valeurs angulaires de repères faciaux, et à fournir ledit vecteur de caractéristique à un classificateur afin de classer l'image faciale fournie comme image faciale réelle du sujet ou comme image faciale artificielle.
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