DE3811396C2 - - Google Patents

Info

Publication number
DE3811396C2
DE3811396C2 DE3811396A DE3811396A DE3811396C2 DE 3811396 C2 DE3811396 C2 DE 3811396C2 DE 3811396 A DE3811396 A DE 3811396A DE 3811396 A DE3811396 A DE 3811396A DE 3811396 C2 DE3811396 C2 DE 3811396C2
Authority
DE
Germany
Prior art keywords
curve
point
contour
data
sections
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 - Lifetime
Application number
DE3811396A
Other languages
German (de)
English (en)
Other versions
DE3811396A1 (de
Inventor
Ken Yokohama Kanagawa Jp Onodera
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
Priority claimed from JP62083008A external-priority patent/JPH081553B2/ja
Priority claimed from JP62083007A external-priority patent/JPS63249193A/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of DE3811396A1 publication Critical patent/DE3811396A1/de
Application granted granted Critical
Publication of DE3811396C2 publication Critical patent/DE3811396C2/de
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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; CALCULATING OR 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; CALCULATING OR 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)
  • Image Generation (AREA)
  • Controls And Circuits For Display Device (AREA)
DE3811396A 1987-04-06 1988-04-05 Bildverarbeitungseinrichtung Granted DE3811396A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP62083008A JPH081553B2 (ja) 1987-04-06 1987-04-06 画像データの圧縮方式
JP62083007A JPS63249193A (ja) 1987-04-06 1987-04-06 画像デ−タの圧縮方式

Publications (2)

Publication Number Publication Date
DE3811396A1 DE3811396A1 (de) 1988-10-27
DE3811396C2 true DE3811396C2 (fr) 1991-11-07

Family

ID=26424071

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3811396A Granted DE3811396A1 (de) 1987-04-06 1988-04-05 Bildverarbeitungseinrichtung

Country Status (4)

Country Link
DE (1) DE3811396A1 (fr)
FR (1) FR2613508B1 (fr)
GB (1) GB2203613B (fr)
IT (1) IT1219909B (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2806961B2 (ja) * 1989-02-22 1998-09-30 株式会社リコー 画像符号化方法
US5233671A (en) * 1989-02-22 1993-08-03 Ricoh Company Ltd. Image coding method for coding characters using a modified Bezier curve
JP2747002B2 (ja) * 1989-04-20 1998-05-06 株式会社東芝 直線ショートベクトル列によって表された形状の直線部と曲線部の切り分け方法
KR930003126B1 (ko) * 1989-04-20 1993-04-19 가부시기가이샤 도시바 곡선정합에 있어서 형상을 표시하는 직선쇼트벡터의 접속상태를 판정하는 방법 및 시스템
JPH03121575A (ja) * 1989-10-04 1991-05-23 Stanley Electric Co Ltd 曲線近似方法および曲線の記憶方法
JP2774653B2 (ja) * 1990-03-14 1998-07-09 キヤノン株式会社 文字処理装置
FR2662041A1 (fr) * 1990-05-11 1991-11-15 Metzger Gerard Procede et dispositif de transmission d'images.
EP0479496A3 (en) * 1990-09-28 1993-03-31 Xerox Corporation High speed graphic image generation using multiple steppers
JP2961121B2 (ja) * 1990-10-17 1999-10-12 セイコープレシジョン株式会社 曲線近似装置
JP2522107B2 (ja) * 1990-10-17 1996-08-07 株式会社精工舎 曲線近似方法
EP0604685A1 (fr) * 1992-12-28 1994-07-06 Océ-Nederland B.V. Méthode pour modifier l'aspect gras des caractères
US5594852A (en) * 1994-08-17 1997-01-14 Laser Products, Inc. Method for operating a curve forming device
US5978512A (en) * 1997-01-21 1999-11-02 Daewoo Electronics Co., Ltd Polygonal approximation method and apparatus for use in a contour encoding system
KR100239592B1 (ko) * 1997-01-21 2000-01-15 전주범 윤곽선 부호화방법 및 장치

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4674058A (en) * 1981-12-07 1987-06-16 Dicomed Corporation Method and apparatus for flexigon representation of a two dimensional figure
GB2147474B (en) * 1983-10-03 1987-05-07 Shaken Kk Method of processing character or pictorial image data
DE3429110A1 (de) * 1984-08-03 1986-02-13 H. Berthold Ag, 1000 Berlin Verfahren zum kodieren und dekodieren von schriftzeichen
US4674059A (en) * 1984-09-10 1987-06-16 Allied Corporation Method and apparatus for generating a set of signals representing a curve

Also Published As

Publication number Publication date
DE3811396A1 (de) 1988-10-27
GB2203613A (en) 1988-10-19
GB8807783D0 (en) 1988-05-05
GB2203613B (en) 1992-01-02
IT1219909B (it) 1990-05-24
IT8847822A0 (it) 1988-04-06
FR2613508B1 (fr) 1996-02-09
FR2613508A1 (fr) 1988-10-07

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8128 New person/name/address of the agent

Representative=s name: TIEDTKE, H., DIPL.-ING. BUEHLING, G., DIPL.-CHEM.

D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee