MA39233B1 - Method for remote identification of the qr code by means of a camera. - Google Patents

Method for remote identification of the qr code by means of a camera.

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
French (fr)
Other versions
MA39233A1 (en
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/en
Priority to PCT/MA2017/050002 priority patent/WO2018021901A1/en
Publication of MA39233A1 publication Critical patent/MA39233A1/en
Publication of MA39233B1 publication Critical patent/MA39233B1/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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; CALCULATING OR 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; CALCULATING OR 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; CALCULATING OR 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; CALCULATING OR 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; CALCULATING OR 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; CALCULATING OR 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

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.The present invention relates to a method of reading a barcode by means of a camera and more particularly to the identification of a remote qr code. The method proposed, through the present invention, is based essentially on image capture by means of a digital camera (11) hd (high definition) which is used to capture a first format image hd. In order to reduce the computation time, this first image is converted into a second definition image sd (standard definition) and then into a third black and white color image (13). Said third binary image (13) is scanned in the two orthogonal directions of the image (31, 32) in order to extract the zones (14) capable of containing the search patterns (21, 45, 52) characterizing the QR code captured (14, 51). Once the code area qr is located in the black and white binary image, the system extracts the corresponding area in the hd image containing the cropped qr code. The method is adapted to correct the perspective effect (111) in the event that said code area has been deformed. The extraction of the information (132) contained in said corrected qr code (131) thus becomes possible thanks to the algorithms already known.

MA39233A 2016-07-27 2016-07-27 Method for remote identification of the qr code by means of a camera. MA39233B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
MA39233A MA39233B1 (en) 2016-07-27 2016-07-27 Method for remote identification of the qr code by means of a camera.
PCT/MA2017/050002 WO2018021901A1 (en) 2016-07-27 2017-05-10 Method of remote identification of the qr code by means of a camera.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MA39233A MA39233B1 (en) 2016-07-27 2016-07-27 Method for remote identification of the qr code by means of a camera.

Publications (2)

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

Family

ID=59521599

Family Applications (1)

Application Number Title Priority Date Filing Date
MA39233A MA39233B1 (en) 2016-07-27 2016-07-27 Method for remote identification of the qr code by means of a camera.

Country Status (2)

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

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2938338B2 (en) 1994-03-14 1999-08-23 株式会社デンソー Two-dimensional code
KR100339691B1 (en) * 2001-11-03 2002-06-07 한탁돈 Apparatus for recognizing code and method therefor
JP4301775B2 (en) * 2002-07-18 2009-07-22 シャープ株式会社 Two-dimensional code reading device, two-dimensional code reading method, two-dimensional code reading program, and recording medium for the program
US7751629B2 (en) * 2004-11-05 2010-07-06 Colorzip Media, Inc. Method and apparatus for decoding mixed code
JP2007090448A (en) * 2005-09-27 2007-04-12 Honda Motor Co Ltd Two-dimensional code detecting device, program for it, and robot control information generating device and robot
US20100236598A1 (en) 2009-03-18 2010-09-23 Solar Semiconductor Pvt. Ltd. Embedded rfid solution for solar panels
US20130035787A1 (en) 2011-08-02 2013-02-07 Crane Merchandising Systems, Inc. Quick response (qr) code generation in vending machines or kiosks for customer engagement

Also Published As

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

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