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1. WO2021144617 - A METHOD OF VEHICLE LICENSE PLATE RECOGNITION BY USING IMAGE MATCHING AND IMAGE CORRELATION TECHNIQUES

Publication Number WO/2021/144617
Publication Date 22.07.2021
International Application No. PCT/IB2020/050833
International Filing Date 03.02.2020
Chapter 2 Demand Filed 26.10.2020
IPC
G06K 9/20 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
20Image acquisition
G06K 9/78 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
78Combination of image acquisition and recognition functions
CPC
G06K 2209/01
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
2209Indexing scheme relating to methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
01Character recognition
G06K 2209/15
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
2209Indexing scheme relating to methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
15Detection and recognition of car license plates
G06K 9/00771
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
00624Recognising scenes, i.e. recognition of a whole field of perception; recognising scene-specific objects
00771Recognising scenes under surveillance, e.g. with Markovian modelling of scene activity
G06K 9/6271
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
627based on distances between the pattern to be recognised and training or reference patterns
6271based on distances to prototypes
Applicants
  • ROOZDAR, Faraz [IR]/[IR]
Inventors
  • ROOZDAR, Faraz
Agents
  • NASIRI AZAM, Bijan
Priority Data
13985014000300964317.01.2020IR
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A METHOD OF VEHICLE LICENSE PLATE RECOGNITION BY USING IMAGE MATCHING AND IMAGE CORRELATION TECHNIQUES
(FR) PROCÉDÉ DE RECONNAISSANCE DE PLAQUES D'IMMATRICULATION DE VÉHICULES À L'AIDE DE TECHNIQUES DE MISE EN CORRESPONDANCE D'IMAGES ET DE CORRÉLATION D'IMAGES
Abstract
(EN)
In this invention, for license plates recognition, a camera with license plate detection and recognition capability, is installed at the entrance of the parking lot. The camera detects the license plate and recognizes the numbers and characters by OCR and ANPR algorithms and sends the data including value of license plate as well as cropped license plate image to the intelligent matching system. Subsequently, when a vehicle stops in a parking, the license plate image is detected and captured with a second camera which cannot recognize license plate characters. Then, the vehicle license plate cropped and sent to the image matching system to match and consequently identify the vehicle license plate. The main innovation of this invention is that instead of using a license plate recognition system that requires the quality camera and related software, an image matching system is applied to recognize the parked vehicles' license plate.
(FR)
Dans la présente invention, pour la reconnaissance de plaques d'immatriculation, une caméra ayant une capacité de détection et de reconnaissance de plaques d'immatriculation est installée à l'entrée d'un parc de stationnement. La caméra détecte une plaque d'immatriculation et reconnaît les chiffres et les caractères à l'aide d'algorithmes OCR et ANPR et envoie les données comprenant la valeur de la plaque d'immatriculation ainsi que l'image de plaque d'immatriculation rognée au système d'appariement intelligent. Ensuite, lorsqu'un véhicule s'arrête dans un lieu de stationnement, l'image de plaque d'immatriculation est détectée et capturée par une seconde caméra qui ne peut pas reconnaître des caractères de plaques d'immatriculation. Ensuite, la plaque d'immatriculation de véhicule est rognée et envoyée au système d'appariement d'images pour mettre en correspondance et par conséquent identifier la plaque d'immatriculation de véhicule. L'innovation principale de la présente invention est qu'au lieu d'utiliser un système de reconnaissance de plaque d'immatriculation qui nécessite la caméra de qualité et un logiciel associé, un système d'appariement d'images est appliqué pour reconnaître la plaque d'immatriculation de véhicules stationnés.
Related patent documents
IR139950140003008179This application is not viewable in PATENTSCOPE because the national phase entry has not been published yet or the national entry is issued from a country that does not share data with WIPO or there is a formatting issue or an unavailability of the application.
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