ATE480832T1 - Vorrichtung und verfahren zur zweistufigen dekodierung von hochdichten optischen symbolen - Google Patents

Vorrichtung und verfahren zur zweistufigen dekodierung von hochdichten optischen symbolen

Info

Publication number
ATE480832T1
ATE480832T1 AT06738674T AT06738674T ATE480832T1 AT E480832 T1 ATE480832 T1 AT E480832T1 AT 06738674 T AT06738674 T AT 06738674T AT 06738674 T AT06738674 T AT 06738674T AT E480832 T1 ATE480832 T1 AT E480832T1
Authority
AT
Austria
Prior art keywords
pixels
gray
high density
dark
density optical
Prior art date
Application number
AT06738674T
Other languages
English (en)
Inventor
Robert Liu
Original Assignee
Microscan Systems Inc
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 Microscan Systems Inc filed Critical Microscan Systems Inc
Application granted granted Critical
Publication of ATE480832T1 publication Critical patent/ATE480832T1/de

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
    • 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
    • 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
    • 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
    • G06K7/1469—Methods for optical code recognition the method including quality enhancement steps using sub-pixel interpolation
    • 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
    • G06K7/1478—Methods for optical code recognition the method including quality enhancement steps adapting the threshold for pixels in a CMOS or CCD pixel sensor for black and white recognition
    • 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
    • G06K7/1486—Setting the threshold-width for bar codes to be decoded

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Artificial Intelligence (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Quality & Reliability (AREA)
  • Image Analysis (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Studio Devices (AREA)
  • Optical Communication System (AREA)
AT06738674T 2005-03-23 2006-03-17 Vorrichtung und verfahren zur zweistufigen dekodierung von hochdichten optischen symbolen ATE480832T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/088,643 US7213761B2 (en) 2005-03-23 2005-03-23 Apparatus and process for two-stage decoding of high-density optical symbols
PCT/US2006/009640 WO2006102031A1 (en) 2005-03-23 2006-03-17 Apparatus and process for two-stage decoding of high-density optical symbols

Publications (1)

Publication Number Publication Date
ATE480832T1 true ATE480832T1 (de) 2010-09-15

Family

ID=36603630

Family Applications (1)

Application Number Title Priority Date Filing Date
AT06738674T ATE480832T1 (de) 2005-03-23 2006-03-17 Vorrichtung und verfahren zur zweistufigen dekodierung von hochdichten optischen symbolen

Country Status (9)

Country Link
US (1) US7213761B2 (de)
EP (1) EP1861810B1 (de)
JP (1) JP2008535058A (de)
KR (1) KR100920764B1 (de)
CN (1) CN101198961B (de)
AT (1) ATE480832T1 (de)
AU (1) AU2006227490B2 (de)
DE (1) DE602006016749D1 (de)
WO (1) WO2006102031A1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7213761B2 (en) * 2005-03-23 2007-05-08 Microscan Systems Incorporated Apparatus and process for two-stage decoding of high-density optical symbols
JP5115131B2 (ja) * 2007-10-11 2013-01-09 株式会社デンソーウェーブ 光学的情報読取装置
JP5119853B2 (ja) * 2007-10-19 2013-01-16 株式会社デンソーウェーブ 光学的情報読取装置
WO2010090159A1 (ja) * 2009-02-05 2010-08-12 株式会社オプトエレクトロニクス 光学的情報読取装置及び光学的情報読取方法
TWI423246B (zh) * 2009-08-21 2014-01-11 Primax Electronics Ltd 圖像處理方法及其相關裝置
CN102881259B (zh) * 2009-09-16 2015-05-20 致伸科技股份有限公司 图像处理方法及装置
US8162223B2 (en) * 2010-03-08 2012-04-24 Seiko Epson Corporation Method and apparatus for creating pixel tokens from machine-readable symbols to improve decoding accuracy in low resolution images
US8267322B2 (en) * 2010-03-08 2012-09-18 Seiko Epson Corporation Method and apparatus for correcting decoding errors in machine-readable symbols
TWI431584B (zh) 2010-09-15 2014-03-21 E Ink Holdings Inc 電子紙顯示器之驅動方法及其驅動裝置
JP5807602B2 (ja) * 2012-03-29 2015-11-10 株式会社デンソーウェーブ 情報コード読取装置
US10057498B1 (en) 2013-03-15 2018-08-21 Cognex Corporation Light field vision system camera and methods for using the same
CN109791623B (zh) * 2016-09-28 2022-06-28 3M创新有限公司 具有包括物理表面的基底的制品及其构造方法
KR102588687B1 (ko) * 2017-10-30 2023-10-12 한국전자통신연구원 영상 기반 바코드 인식 장치 및 방법
US10755062B1 (en) * 2019-03-19 2020-08-25 Cognex Corporation System and method for evaluating symbols
DK3789906T3 (da) * 2019-09-05 2021-08-23 Sick Ag Bestemmelse af modulstørrelsen for en optisk kode

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US4364089A (en) * 1979-10-31 1982-12-14 Westinghouse Electric Corp. Binary correlation video tracker
US4339745A (en) * 1980-05-14 1982-07-13 General Electric Company Optical character recognition
JPH0731717B2 (ja) * 1985-08-27 1995-04-10 住友電気工業株式会社 光学読取装置
JPH0477978A (ja) * 1990-07-20 1992-03-12 Nitsuko Corp バーコードの読取り方法
CN1046169C (zh) * 1992-09-30 1999-11-03 欧林巴斯光学工业股份有限公司 条型码数字化信号处理电路
CN1036808C (zh) * 1993-05-11 1997-12-24 欧林巴斯光学工业股份有限公司 可改变工作范围的条形码译码器及其译码方法
US5979763A (en) 1995-10-13 1999-11-09 Metanetics Corporation Sub-pixel dataform reader with dynamic noise margins
ES2152076T3 (es) 1997-08-01 2001-01-16 Datalogic Spa Procedimiento para la exploracion de un codigo de barras.
US6628808B1 (en) * 1999-07-28 2003-09-30 Datacard Corporation Apparatus and method for verifying a scanned image
US6577757B1 (en) * 1999-07-28 2003-06-10 Intelligent Reasoning Systems, Inc. System and method for dynamic image recognition
JP2001307013A (ja) * 2000-04-20 2001-11-02 Oki Electric Ind Co Ltd バーコード読取装置
US20020176001A1 (en) * 2001-05-11 2002-11-28 Miroslav Trajkovic Object tracking based on color distribution
DE10123406A1 (de) 2001-05-15 2002-11-21 Sick Ag Verfahren zum Erfassen von zweidimensionalen Codes
US7154515B2 (en) * 2001-06-15 2006-12-26 Perkinelmer, Inc. Method and apparatus for reducing printing artifacts of stitched images
US7331523B2 (en) * 2001-07-13 2008-02-19 Hand Held Products, Inc. Adaptive optical image reader
JP2004045356A (ja) * 2002-05-20 2004-02-12 Jfe Steel Kk 表面欠陥検出方法
US6845914B2 (en) 2003-03-06 2005-01-25 Sick Auto Ident, Inc. Method and system for verifying transitions between contrasting elements
EP1615420B1 (de) * 2003-04-15 2009-08-19 Fujitsu Limited Codeerkennungsverfahren und einrichtung
CN100481117C (zh) * 2004-03-15 2009-04-22 武汉矽感科技有限公司 一种二维条码编解码方法
US7303131B2 (en) * 2004-07-30 2007-12-04 Symbol Technologies, Inc. Automatic focusing system for imaging-based bar code reader
US7213761B2 (en) * 2005-03-23 2007-05-08 Microscan Systems Incorporated Apparatus and process for two-stage decoding of high-density optical symbols

Also Published As

Publication number Publication date
AU2006227490B2 (en) 2009-10-01
US7213761B2 (en) 2007-05-08
KR100920764B1 (ko) 2009-10-09
US20060213998A1 (en) 2006-09-28
WO2006102031A1 (en) 2006-09-28
EP1861810B1 (de) 2010-09-08
CN101198961A (zh) 2008-06-11
CN101198961B (zh) 2011-08-03
KR20070117681A (ko) 2007-12-12
EP1861810A1 (de) 2007-12-05
JP2008535058A (ja) 2008-08-28
DE602006016749D1 (de) 2010-10-21
AU2006227490A1 (en) 2006-09-28

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