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1. WO2020004697 - FINGERPRINT IMAGE NOISE CANCELLATION SYSTEM

Publication Number WO/2020/004697
Publication Date 02.01.2020
International Application No. PCT/KR2018/007522
International Filing Date 03.07.2018
IPC
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
K
RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9
Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
T
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
5
Image enhancement or restoration, e.g. from bit-mapped to bit-mapped creating a similar image
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
T
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
3
Geometric image transformation in the plane of the image, e.g. from bit-mapped to bit-mapped creating a different image
40
Scaling of a whole image or part thereof
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
K
RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9
Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
36
Image preprocessing, i.e. processing the image information without deciding about the identity of the image
40
Noise filtering
G06K 9/00 (2006.01)
G06T 5/00 (2006.01)
G06T 3/40 (2006.01)
G06K 9/40 (2006.01)
CPC
G06K 9/00
G06K 9/40
G06T 3/40
G06T 5/00
Applicants
  • 주식회사 바이오로그디바이스 BIOLOG DEVICE CO., LTD. [KR/KR]; 경기도 화성시 동탄기흥로 64-10, 3층 3F, 64-10, Dongtangiheung-ro, Hwaseong-si, Gyeonggi-do 18478, KR
Inventors
  • 박세익 PARK, Se Ik; KR
Agents
  • 특허법인세원 SEWON PATENT LAW FIRM; 서울시 서초구 사임당로 26, 11층 (서초동, 신영빌딩) 11F.(Seocho-dong, Shinyoung Bldg.), Saimdang-ro 26, Seocho-gu, Seoul 06651, KR
Priority Data
10-2018-007254825.06.2018KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) FINGERPRINT IMAGE NOISE CANCELLATION SYSTEM
(FR) SYSTÈME SUPPRESSEUR DE BRUIT D'UNE IMAGE D'EMPREINTE DIGITALE
(KO) 지문이미지 노이즈 제거 시스템
Abstract
(EN)
The present invention relates to a fingerprint image noise cancellation system and, more specifically, to a fingerprint image noise cancellation system for preventing the continual occurrence of an error in fingerprint verification by cancelling spike noise in a frequency domain through a two-dimensional Fourier transform of line noise occurring in a fingerprint image generated by a fingerprint recognition sensor, and restoring a fingerprint image of a time domain, from which the line noise has been cancelled, through an inverse Fourier transform.
(FR)
La présente invention concerne un système suppresseur de bruit d'une image d'empreinte digitale et, plus particulièrement, un système suppresseur de bruit d'une image d'empreinte digitale pour empêcher l'apparition continue d'une erreur dans la vérification d'empreintes digitales en supprimant le bruit de pointe dans un domaine fréquentiel par l'intermédiaire d'une transformée de Fourier bidimensionnelle du bruit de ligne se produisant dans une image d'empreinte digitale générée par un capteur de reconnaissance d'empreintes digitales, et restaurer une image d'empreinte digitale d'un domaine temporel, à partir duquel le bruit de ligne a été supprimé, par l'intermédiaire d'une transformée de Fourier inverse.
(KO)
본 발명은 지문이미지 노이즈 제거 시스템에 관한 것으로서, 더욱 상세하게는, 지문인식센서가 생성한 지문이미지에 발생되는 라인 노이즈(line noise)를 2차원 푸리에 변환를 통해 주파수 영역에서 스파크 노이즈(spike noise)를 제거하고 푸리에 역변환을 통해 라인 노이즈가 제거된 시간 영역의 지문이미지로 복구하는 것을 통해 지문 확인(verify)에 지속적인 오류 발생을 방지하는 지문이미지 노이즈 제거 시스템에 관한 것이다.
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