DE3634024A1 - Verfahren zur umwandlung von konturmustern - Google Patents

Verfahren zur umwandlung von konturmustern

Info

Publication number
DE3634024A1
DE3634024A1 DE19863634024 DE3634024A DE3634024A1 DE 3634024 A1 DE3634024 A1 DE 3634024A1 DE 19863634024 DE19863634024 DE 19863634024 DE 3634024 A DE3634024 A DE 3634024A DE 3634024 A1 DE3634024 A1 DE 3634024A1
Authority
DE
Germany
Prior art keywords
pattern
processing
contour
image
straight lines
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
DE19863634024
Other languages
German (de)
English (en)
Other versions
DE3634024C2 (enrdf_load_stackoverflow
Inventor
Kunio Seto
Kensaku Tanaka
Yukari Taniguchi
Takahiro Kato
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Publication of DE3634024A1 publication Critical patent/DE3634024A1/de
Application granted granted Critical
Publication of DE3634024C2 publication Critical patent/DE3634024C2/de
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/20—Contour coding, e.g. using detection of edges
    • 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
    • G06V30/18—Extraction of features or characteristics of the image
    • G06V30/182—Extraction of features or characteristics of the image by coding the contour of the pattern
    • G06V30/1823—Extraction of features or characteristics of the image by coding the contour of the pattern using vector-coding
    • 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)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Image Processing (AREA)
  • Dot-Matrix Printers And Others (AREA)
DE19863634024 1985-10-07 1986-10-06 Verfahren zur umwandlung von konturmustern Granted DE3634024A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60222937A JPS6282484A (ja) 1985-10-07 1985-10-07 線形図形の変換方法

Publications (2)

Publication Number Publication Date
DE3634024A1 true DE3634024A1 (de) 1987-04-16
DE3634024C2 DE3634024C2 (enrdf_load_stackoverflow) 1990-01-18

Family

ID=16790204

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863634024 Granted DE3634024A1 (de) 1985-10-07 1986-10-06 Verfahren zur umwandlung von konturmustern

Country Status (4)

Country Link
JP (1) JPS6282484A (enrdf_load_stackoverflow)
DE (1) DE3634024A1 (enrdf_load_stackoverflow)
FR (1) FR2588399B1 (enrdf_load_stackoverflow)
GB (1) GB2183429B (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4042644C2 (de) * 1989-09-26 1999-04-01 Canon Kk Druckgerät
US5946001A (en) * 1989-09-26 1999-08-31 Canon Kabushiki Kaisha Output apparatus with changeable font resolution

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0823741B2 (ja) * 1987-06-03 1996-03-06 株式会社日立製作所 ベクトル文字もしくはベクトル図形の処理方法
JP2538631B2 (ja) * 1988-01-29 1996-09-25 株式会社日立製作所 ベクトル文字の処理方法
JPH02158363A (ja) * 1988-12-13 1990-06-18 Nec Off Syst Ltd 文字発生装置
JP2755789B2 (ja) * 1990-06-11 1998-05-25 キヤノン株式会社 文字フオントメモリと、該文字フオントメモリを用いた文字パターン発生装置
GB9022229D0 (en) * 1990-10-12 1990-11-28 Nunney Stephen G Video waveform storing system
US5644366A (en) * 1992-01-29 1997-07-01 Canon Kabushiki Kaisha Image reproduction involving enlargement or reduction of extracted contour vector data for binary regions in images having both binary and halftone regions
EP0650287B1 (en) * 1993-10-26 2004-03-10 Canon Kabushiki Kaisha Image processing method and apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1524345A1 (de) * 1965-10-18 1970-08-20 California Comp Products Inc Verfahren und System zur Groessenaenderung von Zeichenmustern
DE2919013A1 (de) * 1978-05-12 1979-12-06 Eltra Corp Verfahren zum kodieren von schriftzeichen und nach diesem verfahren arbeitende speichereinrichtung in einem setzgeraet
DE3326725A1 (de) * 1982-09-13 1984-03-15 Dainippon Screen Mfg Verfahren zur datenkomprimierung fuer zweidimensionale zeichenbilder

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4087788A (en) * 1977-01-14 1978-05-02 Ncr Canada Ltd - Ncr Canada Ltee Data compression system
US4633433A (en) * 1979-04-23 1986-12-30 International Business Machines Corporation Display system for displaying maps having two-dimensional roads
JPS58163078A (ja) * 1982-03-24 1983-09-27 Toshiba Corp 細線化処理方式
JPS5922160A (ja) * 1982-07-27 1984-02-04 Fujitsu Ltd 図形処理方法
JPS5969787A (ja) * 1982-10-15 1984-04-20 日本電気オフィスシステム株式会社 文字信号発生方法とその装置
JPS59123069A (ja) * 1982-12-28 1984-07-16 Fujitsu Ltd ベクトル線分の太線処理方式
JPS59214970A (ja) * 1983-05-20 1984-12-04 Ricoh Co Ltd 書体変換方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1524345A1 (de) * 1965-10-18 1970-08-20 California Comp Products Inc Verfahren und System zur Groessenaenderung von Zeichenmustern
DE2919013A1 (de) * 1978-05-12 1979-12-06 Eltra Corp Verfahren zum kodieren von schriftzeichen und nach diesem verfahren arbeitende speichereinrichtung in einem setzgeraet
DE3326725A1 (de) * 1982-09-13 1984-03-15 Dainippon Screen Mfg Verfahren zur datenkomprimierung fuer zweidimensionale zeichenbilder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4042644C2 (de) * 1989-09-26 1999-04-01 Canon Kk Druckgerät
US5946001A (en) * 1989-09-26 1999-08-31 Canon Kabushiki Kaisha Output apparatus with changeable font resolution

Also Published As

Publication number Publication date
DE3634024C2 (enrdf_load_stackoverflow) 1990-01-18
GB8623689D0 (en) 1986-11-05
FR2588399B1 (fr) 1994-10-21
JPS6282484A (ja) 1987-04-15
FR2588399A1 (fr) 1987-04-10
GB2183429A (en) 1987-06-03
GB2183429B (en) 1989-10-25

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition