[go: up one dir, main page]

MA39233B1 - Procédé d'identification à distance du code qr au moyen d'une caméra. - Google Patents

Procédé d'identification à distance du code qr au moyen d'une caméra.

Info

Publication number
MA39233B1
MA39233B1 MA39233A MA39233A MA39233B1 MA 39233 B1 MA39233 B1 MA 39233B1 MA 39233 A MA39233 A MA 39233A MA 39233 A MA39233 A MA 39233A MA 39233 B1 MA39233 B1 MA 39233B1
Authority
MA
Morocco
Prior art keywords
image
code
camera
definition
black
Prior art date
Application number
MA39233A
Other languages
English (en)
Other versions
MA39233A1 (fr
Inventor
Youssef ZAZ
Hicham Tribak
Original Assignee
Univ Abdelmalek Essaadi Tetouan
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Univ Abdelmalek Essaadi Tetouan filed Critical Univ Abdelmalek Essaadi Tetouan
Priority to MA39233A priority Critical patent/MA39233B1/fr
Priority to PCT/MA2017/050002 priority patent/WO2018021901A1/fr
Publication of MA39233A1 publication Critical patent/MA39233A1/fr
Publication of MA39233B1 publication Critical patent/MA39233B1/fr

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
    • G06K7/1404—Methods for optical code recognition
    • G06K7/1408—Methods for optical code recognition the method being specifically adapted for the type of code
    • G06K7/1417—2D bar codes
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
    • G06K7/1404—Methods for optical code recognition
    • G06K7/1439—Methods for optical code recognition including a method step for retrieval of the optical code
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
    • G06K7/1404—Methods for optical code recognition
    • G06K7/1439—Methods for optical code recognition including a method step for retrieval of the optical code
    • G06K7/1443—Methods for optical code recognition including a method step for retrieval of the optical code locating of the code in an image
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
    • G06K7/1404—Methods for optical code recognition
    • G06K7/1439—Methods for optical code recognition including a method step for retrieval of the optical code
    • G06K7/1447—Methods for optical code recognition including a method step for retrieval of the optical code extracting optical codes from image or text carrying said optical code
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
    • G06K7/1404—Methods for optical code recognition
    • G06K7/1439—Methods for optical code recognition including a method step for retrieval of the optical code
    • G06K7/1452—Methods for optical code recognition including a method step for retrieval of the optical code detecting bar code edges
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
    • G06K7/1404—Methods for optical code recognition
    • G06K7/146—Methods for optical code recognition the method including quality enhancement steps
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
    • G06K7/1404—Methods for optical code recognition
    • G06K7/146—Methods for optical code recognition the method including quality enhancement steps
    • G06K7/1473—Methods for optical code recognition the method including quality enhancement steps error correction

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Character Input (AREA)
  • Image Analysis (AREA)

Abstract

La présente invention a trait à un procédé de lecture d'un code à barres au moyen d'une caméra et plus particulièrement l'identification d'un code qr à distance. Le procédé proposé, à travers la présente invention, est basé essentiellement sur la capture d'image au moyen d'une caméra numérique (11) hd (high definition) qui est utilisée pour capturer une première image de format hd. Afin de réduire le temps de calcul, cette première image est convertie en une seconde image de définition plus faible sd (standard definition), puis en une troisième image binaire de couleurs noire et blanche (13). Ladite troisième image binaire (13) est balayée dans les deux directions orthogonales de l'image (31, 32) afin d'extraire la zones (14) susceptible de contenir les motifs de recherche (21, 45, 52) caractérisant le code qr capturé (14, 51). Une fois la zone du code qr est localisée dans l'image binaire en noir et blanc, le système extrait la zone correspondante dans l'image hd contenant le code qr recadré. Le procédé est conçu de manière à corriger l'effet de perspective (111) dans le cas où ladite zone de code aurait subi une déformation. L'extraction de l'information (132) contenue dans ledit code qr corrigé (131) devient donc possible grâce aux algorithmes déjà connus.
MA39233A 2016-07-27 2016-07-27 Procédé d'identification à distance du code qr au moyen d'une caméra. MA39233B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
MA39233A MA39233B1 (fr) 2016-07-27 2016-07-27 Procédé d'identification à distance du code qr au moyen d'une caméra.
PCT/MA2017/050002 WO2018021901A1 (fr) 2016-07-27 2017-05-10 Procédé d'identification à distance du code qr au moyen d'une caméra.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MA39233A MA39233B1 (fr) 2016-07-27 2016-07-27 Procédé d'identification à distance du code qr au moyen d'une caméra.

Publications (2)

Publication Number Publication Date
MA39233A1 MA39233A1 (fr) 2018-01-31
MA39233B1 true MA39233B1 (fr) 2018-11-30

Family

ID=59521599

Family Applications (1)

Application Number Title Priority Date Filing Date
MA39233A MA39233B1 (fr) 2016-07-27 2016-07-27 Procédé d'identification à distance du code qr au moyen d'une caméra.

Country Status (2)

Country Link
MA (1) MA39233B1 (fr)
WO (1) WO2018021901A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2938338B2 (ja) 1994-03-14 1999-08-23 株式会社デンソー 二次元コード
KR100339691B1 (ko) * 2001-11-03 2002-06-07 한탁돈 코드인식을 위한 장치 및 그 방법
JP4301775B2 (ja) * 2002-07-18 2009-07-22 シャープ株式会社 ２次元コード読み取り装置，２次元コード読み取り方法，２次元コード読み取りプログラム及び該プログラムの記録媒体
US7751629B2 (en) * 2004-11-05 2010-07-06 Colorzip Media, Inc. Method and apparatus for decoding mixed code
JP2007090448A (ja) * 2005-09-27 2007-04-12 Honda Motor Co Ltd 二次元コード検出装置及びそのプログラム、並びに、ロボット制御情報生成装置及びロボット
US20100236598A1 (en) 2009-03-18 2010-09-23 Solar Semiconductor Pvt. Ltd. Embedded rfid solution for solar panels
CA2843895A1 (fr) 2011-08-02 2013-02-07 Crane Merchandising Systems, Inc. Generation de code quick response (qr) dans des distributeurs automatiques ou des kiosques en vue de renforcer l'engagement des clients

Also Published As

Publication number Publication date
WO2018021901A1 (fr) 2018-02-01
MA39233A1 (fr) 2018-01-31

Similar Documents

Publication Publication Date Title
CN106683147B (zh) 一种图像背景虚化的方法
KR101434533B1 (ko) 손가락 동작인식 기반의 카메라 촬영 시스템 및 그 방법
Jäger et al. Seaclef 2016: object proposal classification for fish detection in underwater videos.
US10303969B2 (en) Pose detection using depth camera
AU2017302245A1 (en) Optical character recognition utilizing hashed templates
Tabassum et al. Text detection using MSER and stroke width transform
CN107862658A (zh) 图像处理方法、装置、计算机可读存储介质和电子设备
CN110751071A (zh) 人脸识别方法及装置、存储介质、计算设备
Hartl et al. Real-time detection and recognition of machine-readable zones with mobile devices.
Leal et al. Smartphone camera document detection via Geodesic Object Proposals
Thavalengal et al. Iris pattern obfuscation in digital images
MA39233B1 (fr) Procédé d'identification à distance du code qr au moyen d'une caméra.
KR101616194B1 (ko) 적외선 조명을 이용한 객체 추출 방법 및 그 장치
KR101732359B1 (ko) 이미지 내의 텍스트를 검출하는 방법 및 장치
Shukla et al. An introduction of face recognition and face detection for blurred and noisy images
JP5984880B2 (ja) 画像処理装置
Kumar An efficient approach for text extraction in images and video frames using gabor filter
CN107770446B (zh) 图像处理方法、装置、计算机可读存储介质和电子设备
CN106803053B (zh) 指纹图像处理方法与装置
FR3021781A1 (fr) Procede de detection d'un code a barres a deux dimensions dans une image d'un document numerise.
US10380447B1 (en) Providing regions of interest in an image
Saroui et al. Trajectory recovery and stroke reconstruction of handwritten mathematical symbols
Nor et al. Image segmentation and text extraction: application to the extraction of textual information in scene images
Jeon et al. Robust feature detection using particle keypoints and its application to video stabilization in a consumer handheld camera
Sharma et al. Automatic contact importer from business cards for Android