GB1593665A - Slope feature detection system - Google Patents

Slope feature detection system Download PDF

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Publication number
GB1593665A
GB1593665A GB49161/77A GB4916177A GB1593665A GB 1593665 A GB1593665 A GB 1593665A GB 49161/77 A GB49161/77 A GB 49161/77A GB 4916177 A GB4916177 A GB 4916177A GB 1593665 A GB1593665 A GB 1593665A
Authority
GB
United Kingdom
Prior art keywords
logic
logic unit
unit
input
output
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.)
Expired
Application number
GB49161/77A
Other languages
English (en)
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.)
Recognition Equipment Inc
Original Assignee
Recognition Equipment 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 Recognition Equipment Inc filed Critical Recognition Equipment Inc
Publication of GB1593665A publication Critical patent/GB1593665A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/20—Combination of acquisition, preprocessing or recognition functions
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Character Input (AREA)
  • Image Processing (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Character Discrimination (AREA)
GB49161/77A 1976-12-09 1977-11-25 Slope feature detection system Expired GB1593665A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/749,200 US4093941A (en) 1976-12-09 1976-12-09 Slope feature detection system

Publications (1)

Publication Number Publication Date
GB1593665A true GB1593665A (en) 1981-07-22

Family

ID=25012704

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49161/77A Expired GB1593665A (en) 1976-12-09 1977-11-25 Slope feature detection system

Country Status (7)

Country Link
US (1) US4093941A (enExample)
DE (1) DE2754972A1 (enExample)
FR (1) FR2373837A1 (enExample)
GB (1) GB1593665A (enExample)
NL (1) NL7713485A (enExample)
NO (1) NO774199L (enExample)
SE (1) SE441221B (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144251A (en) * 1983-07-14 1985-02-27 Scan Optics Inc Apparatus for identifying patterns

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4326190A (en) * 1978-08-30 1982-04-20 Borland David L Boundary trace slope feature detection system
US4773098A (en) * 1980-05-27 1988-09-20 Texas Instruments Incorporated Method of optical character recognition
US4490848A (en) * 1982-03-31 1984-12-25 General Electric Company Method and apparatus for sorting corner points in a visual image processing system
US4493105A (en) * 1982-03-31 1985-01-08 General Electric Company Method and apparatus for visual image processing
US4864628A (en) * 1983-08-26 1989-09-05 Texas Instruments Incorporated Method of optical character recognition
DE3515159A1 (de) * 1984-04-27 1985-10-31 Canon K.K., Tokio/Tokyo Bildverarbeitungseinrichtung
US4633400A (en) * 1984-12-21 1986-12-30 Conoco Inc. Method for waveform feature extraction from seismic signals
US4949391A (en) * 1986-09-26 1990-08-14 Everex Ti Corporation Adaptive image acquisition system
US4882629A (en) * 1987-05-08 1989-11-21 Everex Ti Corporation Adaptive exposure control system
US5574803A (en) * 1991-08-02 1996-11-12 Eastman Kodak Company Character thinning using emergent behavior of populations of competitive locally independent processes
US5625719A (en) * 1992-10-19 1997-04-29 Fast; Bruce B. OCR image preprocessing method for image enhancement of scanned documents
US6377710B1 (en) * 1998-11-25 2002-04-23 Xerox Corporation Method and apparatus for extracting the skeleton of a binary figure by contour-based erosion
US6411733B1 (en) * 1998-11-25 2002-06-25 Xerox Corporation Method and apparatus for separating document image object types
SG109996A1 (en) * 2002-10-28 2005-04-28 Nanyang Polytechnic Method and apparatus for optical character recognition
JP4623638B2 (ja) * 2005-01-27 2011-02-02 パナソニック株式会社 画像復号装置
KR100929475B1 (ko) * 2005-02-23 2009-12-02 파나소닉 전공 주식회사 입상물체의 검사방법 및 그 방법을 실시하는 검사장치
US7590209B2 (en) * 2005-12-30 2009-09-15 L3 Communications Integrated Systems L.P. Method and computer program for identifying a transition in a phase-shift keying or frequency-shift keying signal
US7889938B2 (en) * 2006-03-31 2011-02-15 Canon Kabushiki Kaisha Method and apparatus for processing line drawings in images
JP4933404B2 (ja) * 2007-11-07 2012-05-16 キヤノン株式会社 画像処理装置、画像処理方法、画像処理プログラム、並びに、プログラム記録媒体

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3303465A (en) * 1963-12-30 1967-02-07 Ibm Character recognition apparatus employing a curve follower
GB1171627A (en) * 1966-10-07 1969-11-26 Post Office Improvements in or relating to Character Recognition Machines
NL7016538A (enExample) * 1970-11-12 1972-05-16
NL7016539A (enExample) * 1970-11-12 1972-05-16
US3723970A (en) * 1971-01-04 1973-03-27 Scan Optics Inc Optical character recognition system
US3863218A (en) * 1973-01-26 1975-01-28 Hitachi Ltd Pattern feature detection system
US3987412A (en) * 1975-01-27 1976-10-19 International Business Machines Corporation Method and apparatus for image data compression utilizing boundary following of the exterior and interior borders of objects

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144251A (en) * 1983-07-14 1985-02-27 Scan Optics Inc Apparatus for identifying patterns
US4628532A (en) * 1983-07-14 1986-12-09 Scan Optics, Inc. Alphanumeric handprint recognition

Also Published As

Publication number Publication date
NL7713485A (nl) 1978-06-13
FR2373837A1 (fr) 1978-07-07
NO774199L (no) 1978-06-12
DE2754972A1 (de) 1978-08-24
SE7713955L (sv) 1978-06-10
FR2373837B1 (enExample) 1984-10-19
US4093941A (en) 1978-06-06
SE441221B (sv) 1985-09-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee