JP7350133B2 - コード読み取り装置の自動調整方法及びカメラベースのコード読み取り装置 - Google Patents
コード読み取り装置の自動調整方法及びカメラベースのコード読み取り装置 Download PDFInfo
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- JP7350133B2 JP7350133B2 JP2022090240A JP2022090240A JP7350133B2 JP 7350133 B2 JP7350133 B2 JP 7350133B2 JP 2022090240 A JP2022090240 A JP 2022090240A JP 2022090240 A JP2022090240 A JP 2022090240A JP 7350133 B2 JP7350133 B2 JP 7350133B2
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- 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
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10851—Circuits for pulse shaping, amplifying, eliminating noise signals, checking the function of the sensing device
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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
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10712—Fixed beam scanning
- G06K7/10722—Photodetector array or CCD scanning
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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
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10712—Fixed beam scanning
- G06K7/10722—Photodetector array or CCD scanning
- G06K7/10752—Exposure time control
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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
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10831—Arrangement of optical elements, e.g. lenses, mirrors, prisms
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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
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10841—Particularities of the light-sensitive elements
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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
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10861—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices sensing of data fields affixed to objects or articles, e.g. coded labels
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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
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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
- G06K7/1443—Methods for optical code recognition including a method step for retrieval of the optical code locating of the code in an image
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- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Image Processing (AREA)
Description
Claims (15)
- 画像センサ(18)と制御及び評価ユニット(24、38)とを備えるコード読み取り装置(10、38)を自動的に調整する方法であって、前記画像センサ(18)を用いて、該画像センサ(18)の視野(14)内に配置された、模範コードの付された模範物体の模範画像を撮影し、該模範画像の評価に基づいて、前記コード読み取り装置(10、38)の運転のための少なくとも1つの撮影パラメータ及び/又は少なくとも1つの復号パラメータを確定する方法において、
前記模範画像から計算による変形によって別の模範画像を生成し、前記少なくとも1つの撮影パラメータ及び/又は前記少なくとも1つの復号パラメータを前記別の模範画像の評価に基づいて確定することを特徴とする方法。 - 前記模範画像の評価が復号の試行を含んでいる、請求項1に記載の方法。
- 前記少なくとも1つの撮影パラメータが、受光感度、露出時間、画像リフレッシュレート、及び/又は、前記画像センサの前に配置された光学系(16)の焦点位置を含んでいる、請求項1に記載の方法。
- 異なる物体サイズのための別の模範画像を生成し、特に、後続の運転時に予期される最小の物体高さと最大の物体高さに対してそれぞれ1つの別の模範画像を生成する、請求項1に記載の方法。
- 前記別の模範画像を、解像度を上げること又は解像度を下げることにより生成し、特にバイキュービック内挿を用いる、請求項4に記載の方法。
- 前記別の模範画像を、予期される焦点誤りに相当する不鮮明さで以て生成する、請求項4に記載の方法。
- 画像内容のシフトにより別の模範画像を生成する、請求項1に記載の方法。
- 前記別の模範画像を、予期される被写体ぶれで生成する、請求項7に記載の方法。
- 最初に、前記模範コードを読み取ることができるように前記少なくとも1つの撮影パラメータ及び/又は復号パラメータの初期値を決める、請求項1に記載の方法。
- 前記少なくとも1つの撮影パラメータ及び/又は復号パラメータを、該撮影パラメータ及び/又は復号パラメータのパラメータ空間内の徹底的な検査を含む最適化法により確定する、請求項1に記載の方法。
- 前記模範画像を、検査すべき少なくとも1つの撮影パラメータに従った設定で改めて撮影する、請求項10に記載の方法。
- 複数の模範画像を1つの検査すべき焦点位置と複数の受光感度で撮影する、請求項10又は11に記載の方法。
- 前記調整を単一の模範物体を用いて行う、請求項1~11のいずれかに記載の方法。
- 画像データを取得するための画像センサ(18)と制御及び評価ユニット(24、38)とを備えるカメラベースのコード読み取り装置(10、38)であって、請求項1~11のいずれかに記載の方法に従って調整されているとともに、運転時に物体(30)の画像を取得して該物体に付された光学コード(34)を読み取るように構成されているコード読み取り装置(10、38)。
- 検出対象の物体(30)の流れの近く、特にベルトコンベア(28)の近くに固定的に取り付けられている、及び/又は、前記画像センサ(18)に割り当てられた、焦点位置が手動で又は予期される物体の連続よりも低速でしか調節できない光学系(16)を備えている、請求項14に記載のコード読み取り装置(10、38)。
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EP21188808.6 | 2021-07-30 | ||
EP21188808.6A EP4124991B1 (de) | 2021-07-30 | 2021-07-30 | Verfahren zum automatischen einrichten einer codelesevorrichtung und kamerabasierte codelesevorrichtung |
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JP2023020897A JP2023020897A (ja) | 2023-02-09 |
JP7350133B2 true JP7350133B2 (ja) | 2023-09-25 |
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US (1) | US11922263B2 (ja) |
EP (1) | EP4124991B1 (ja) |
JP (1) | JP7350133B2 (ja) |
KR (1) | KR20230019043A (ja) |
CN (1) | CN115696053A (ja) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2014157519A (ja) | 2013-02-18 | 2014-08-28 | Keyence Corp | 光学コード読取システム及び光学コードの読取制御方法 |
JP2020155084A (ja) | 2019-03-14 | 2020-09-24 | オムロン株式会社 | コード読取装置、コード読取方法、および、ワーク |
JP2021077360A (ja) | 2019-10-22 | 2021-05-20 | ジック アーゲー | コードリーダ及び光学コードの読み取り方法 |
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ATE239268T1 (de) | 1998-12-22 | 2003-05-15 | Datalogic Spa | Verfahren zur automatischen regulierung der eigenschaften eines optischen codelesesystems |
US6546114B1 (en) * | 1999-09-07 | 2003-04-08 | Microsoft Corporation | Technique for detecting a watermark in a marked image |
US9033238B2 (en) * | 2011-08-30 | 2015-05-19 | Digimarc Corporation | Methods and arrangements for sensing identification information from objects |
EP2843616A1 (de) * | 2013-08-29 | 2015-03-04 | Sick Ag | Optoelektronische Vorrichtung und Verfahren zur Aufnahme entzerrter Bilder |
US10534942B1 (en) * | 2018-08-23 | 2020-01-14 | Zebra Technologies Corporation | Method and apparatus for calibrating a client computing device for decoding symbols |
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- 2021-07-30 EP EP21188808.6A patent/EP4124991B1/de active Active
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- 2022-06-02 JP JP2022090240A patent/JP7350133B2/ja active Active
- 2022-07-20 US US17/869,180 patent/US11922263B2/en active Active
- 2022-07-27 KR KR1020220093054A patent/KR20230019043A/ko not_active Application Discontinuation
- 2022-07-28 CN CN202210899559.7A patent/CN115696053A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2014157519A (ja) | 2013-02-18 | 2014-08-28 | Keyence Corp | 光学コード読取システム及び光学コードの読取制御方法 |
JP2020155084A (ja) | 2019-03-14 | 2020-09-24 | オムロン株式会社 | コード読取装置、コード読取方法、および、ワーク |
JP2021077360A (ja) | 2019-10-22 | 2021-05-20 | ジック アーゲー | コードリーダ及び光学コードの読み取り方法 |
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US11922263B2 (en) | 2024-03-05 |
JP2023020897A (ja) | 2023-02-09 |
EP4124991C0 (de) | 2023-11-15 |
EP4124991A1 (de) | 2023-02-01 |
US20230032900A1 (en) | 2023-02-02 |
EP4124991B1 (de) | 2023-11-15 |
KR20230019043A (ko) | 2023-02-07 |
CN115696053A (zh) | 2023-02-03 |
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