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1. WO2020135125 - LIVING BODY DETECTION METHOD AND DEVICE

Publication Number WO/2020/135125
Publication Date 02.07.2020
International Application No. PCT/CN2019/125608
International Filing Date 16.12.2019
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 9/00
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
G06K 9/00201
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
00201Recognising three-dimensional objects, e.g. using range or tactile information
G06K 9/00228
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
00221Acquiring or recognising human faces, facial parts, facial sketches, facial expressions
00228Detection; Localisation; Normalisation
G06K 9/00906
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
00885Biometric patterns not provided for under G06K9/00006, G06K9/00154, G06K9/00335, G06K9/00362, G06K9/00597; Biometric specific functions not specific to the kind of biometric
00899Spoof detection
00906Detection of body part being alive
G06T 7/50
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
50Depth or shape recovery
Applicants
  • 杭州海康威视数字技术股份有限公司 HANGZHOU HIKVISION DIGITAL TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 任志浩 REN, Zhihao
  • 华丛一 HUA, Congyi
Agents
  • 北京柏杉松知识产权代理事务所(普通合伙) PATENTSINO IP FIRM
Priority Data
201811608283.227.12.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) LIVING BODY DETECTION METHOD AND DEVICE
(FR) PROCÉDÉ ET DISPOSITIF DE DÉTECTION DE CORPS VIVANT
(ZH) 活体检测方法和设备
Abstract
(EN)
A living body detection method and device. The method comprises: extracting valid depth data in a preset detection area from depth map data comprising a target detection object (101); generating a depth difference histogram according to the valid depth data (102); and inputting the depth difference histogram into a pre-trained machine learning classifier to obtain a determining result of whether the target detection object is a living body (103). According to the method, the accuracy of detection is improved.
(FR)
L'invention concerne un procédé et un dispositif de détection de corps vivant. Le procédé consiste : à extraire des données valides de profondeur dans une zone de détection prédéfinie à partir de données de carte de profondeur comprenant un objet cible de détection (101) ; à générer un histogramme de différences de profondeur en fonction des données valides de profondeur (102) ; et à introduire l'histogramme de différences de profondeur dans un classificateur pré-instruit d'apprentissage automatique pour obtenir un résultat de détermination indiquant si l'objet cible de détection est un corps vivant (103). Selon le procédé, la précision de détection est améliorée.
(ZH)
一种活体检测方法和设备,所述方法包括:从包含目标检测对象的深度图数据中,提取出预设检测区域的有效深度数据(101);根据所述有效深度数据,生成深度差直方图(102);将所述深度差直方图输入至预先训练的机器学习分类器,得到所述目标检测对象是否为活体的判断结果(103)。所述方法可以提高检测的准确度。
Also published as
Latest bibliographic data on file with the International Bureau