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
Links
Classifications
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- 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
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- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Artificial Intelligence (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (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.
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)
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 |
-
2016
- 2016-07-27 MA MA39233A patent/MA39233B1/fr unknown
-
2017
- 2017-05-10 WO PCT/MA2017/050002 patent/WO2018021901A1/fr active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2018021901A1 (fr) | 2018-02-01 |
MA39233A1 (fr) | 2018-01-31 |
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