FR2475257A1 - Procede et appareil de reconnaissance de caracteres - Google Patents

Procede et appareil de reconnaissance de caracteres Download PDF

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Publication number
FR2475257A1
FR2475257A1 FR8102105A FR8102105A FR2475257A1 FR 2475257 A1 FR2475257 A1 FR 2475257A1 FR 8102105 A FR8102105 A FR 8102105A FR 8102105 A FR8102105 A FR 8102105A FR 2475257 A1 FR2475257 A1 FR 2475257A1
Authority
FR
France
Prior art keywords
character
matrix
reference character
distribution
recognition
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR8102105A
Other languages
English (en)
French (fr)
Other versions
FR2475257B1 (enExample
Inventor
Alexander D Schapira
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
COMPUSCAN Inc
Original Assignee
COMPUSCAN 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 COMPUSCAN Inc filed Critical COMPUSCAN Inc
Publication of FR2475257A1 publication Critical patent/FR2475257A1/fr
Application granted granted Critical
Publication of FR2475257B1 publication Critical patent/FR2475257B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/70—Arrangements for image or video recognition or understanding using pattern recognition or machine learning
    • G06V10/74—Image or video pattern matching; Proximity measures in feature spaces
    • G06V10/75—Organisation of the matching processes, e.g. simultaneous or sequential comparisons of image or video features; Coarse-fine approaches, e.g. multi-scale approaches; using context analysis; Selection of dictionaries
    • G06V10/751—Comparing pixel values or logical combinations thereof, or feature values having positional relevance, e.g. template matching
    • G06V10/7515—Shifting the patterns to accommodate for positional errors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Medical Informatics (AREA)
  • Computing Systems (AREA)
  • Databases & Information Systems (AREA)
  • Evolutionary Computation (AREA)
  • General Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Software Systems (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Character Discrimination (AREA)
  • Character Input (AREA)
FR8102105A 1980-02-04 1981-02-04 Procede et appareil de reconnaissance de caracteres Granted FR2475257A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/118,412 US4308523A (en) 1980-02-04 1980-02-04 Apparatus and method for character recognition

Publications (2)

Publication Number Publication Date
FR2475257A1 true FR2475257A1 (fr) 1981-08-07
FR2475257B1 FR2475257B1 (enExample) 1985-03-22

Family

ID=22378422

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8102105A Granted FR2475257A1 (fr) 1980-02-04 1981-02-04 Procede et appareil de reconnaissance de caracteres

Country Status (4)

Country Link
US (1) US4308523A (enExample)
JP (1) JPS56153485A (enExample)
DE (1) DE3103592A1 (enExample)
FR (1) FR2475257A1 (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0369761A3 (en) * 1988-11-16 1991-12-18 Ncr International Inc. Character segmentation method
EP0492979A3 (enExample) * 1990-12-28 1994-02-23 Ncr Co

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4376932A (en) * 1980-06-30 1983-03-15 International Business Machines Corporation Multi-registration in character recognition
US4453268A (en) * 1981-03-18 1984-06-05 Lundy Electronics & Systems, Inc. OCR Page reader
US4499595A (en) * 1981-10-01 1985-02-12 General Electric Co. System and method for pattern recognition
US4700401A (en) * 1983-02-28 1987-10-13 Dest Corporation Method and apparatus for character recognition employing a dead-band correlator
US4606069A (en) * 1983-06-10 1986-08-12 At&T Bell Laboratories Apparatus and method for compression of facsimile information by pattern matching
JPH0715703B2 (ja) * 1986-05-16 1995-02-22 富士電機株式会社 文字読取方式
US4876730A (en) * 1987-02-25 1989-10-24 Lundy Electronics & Systems, Inc. Optical character reader with skew recognition
US5257325A (en) * 1991-12-11 1993-10-26 International Business Machines Corporation Electronic parallel raster dual image registration device
US5638466A (en) * 1995-08-30 1997-06-10 Horizon Marketing Corporation Aka Wordwand Method and apparatus for deskewing images of symbols having a non-linear baseline
US5912988A (en) * 1996-12-27 1999-06-15 Xytec Corporation Image processing method and apparatus for distortion compensation
US6888958B1 (en) * 1999-03-30 2005-05-03 Kabushiki Kaisha Toshiba Method and apparatus for inspecting patterns
WO2002048953A1 (en) * 2000-12-15 2002-06-20 United States Postal Service Method and apparatus for alphanumeric recognition
US7516130B2 (en) * 2005-05-09 2009-04-07 Trend Micro, Inc. Matching engine with signature generation
JP5365065B2 (ja) * 2008-05-13 2013-12-11 富士通株式会社 辞書作成装置
US10438098B2 (en) * 2017-05-19 2019-10-08 Hand Held Products, Inc. High-speed OCR decode using depleted centerlines
CN114661904B (zh) * 2022-03-10 2023-04-07 北京百度网讯科技有限公司 文档处理模型的训练方法、装置、设备、存储介质及程序

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3069079A (en) * 1957-04-17 1962-12-18 Int Standard Electric Corp Automatic character recognition method
US4153897A (en) * 1976-07-23 1979-05-08 Hitachi, Ltd. Method and device for detecting the similarity between standard and unknown patterns

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL274810A (enExample) * 1961-02-16
US3167745A (en) * 1962-01-15 1965-01-26 Philco Corp Character identification system employing plural resistor-correlation masks
US3292149A (en) * 1964-06-18 1966-12-13 Ibm Identification and comparison apparatus for contour patterns such as fingerprints
GB1234941A (en) * 1967-08-16 1971-06-09 Emi Ltd Improvements in or relating to pattern recognition devices
US3576534A (en) * 1969-08-11 1971-04-27 Compuscan Inc Image cross correlator
JPS4966034A (enExample) * 1972-10-27 1974-06-26
US4136332A (en) * 1976-01-30 1979-01-23 Hitachi, Ltd. Device for detecting displacement between patterns
US4200861A (en) * 1978-09-01 1980-04-29 View Engineering, Inc. Pattern recognition apparatus and method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3069079A (en) * 1957-04-17 1962-12-18 Int Standard Electric Corp Automatic character recognition method
US4153897A (en) * 1976-07-23 1979-05-08 Hitachi, Ltd. Method and device for detecting the similarity between standard and unknown patterns

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PROCEEDINGS OF THE FOURTH INTERNATIONAL JOINT CONFERENCE ON PATTERN RECOGNITION, 7-10 novembre 1978, Kyoto (JP) *
REVIEW OF THE ELECTRICAL COMMUNICATION LABORATORIES, vol. 23, nos. 11-12, novembre-décembre 1975, Tokyo (JP) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0369761A3 (en) * 1988-11-16 1991-12-18 Ncr International Inc. Character segmentation method
EP0492979A3 (enExample) * 1990-12-28 1994-02-23 Ncr Co

Also Published As

Publication number Publication date
US4308523A (en) 1981-12-29
JPS56153485A (en) 1981-11-27
FR2475257B1 (enExample) 1985-03-22
DE3103592A1 (de) 1982-01-21

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