JPS5710884A - Border segment extraction system - Google Patents

Border segment extraction system

Info

Publication number
JPS5710884A
JPS5710884A JP8470080A JP8470080A JPS5710884A JP S5710884 A JPS5710884 A JP S5710884A JP 8470080 A JP8470080 A JP 8470080A JP 8470080 A JP8470080 A JP 8470080A JP S5710884 A JPS5710884 A JP S5710884A
Authority
JP
Japan
Prior art keywords
threshold level
border segment
rise
continuity
deciding
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
JP8470080A
Other languages
Japanese (ja)
Other versions
JPS6360436B2 (en
Inventor
Manabu Takakura
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP8470080A priority Critical patent/JPS5710884A/en
Publication of JPS5710884A publication Critical patent/JPS5710884A/en
Publication of JPS6360436B2 publication Critical patent/JPS6360436B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G06V30/16—Image preprocessing
    • G06V30/162—Quantising the image signal
    • 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)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Character Discrimination (AREA)
  • Image Analysis (AREA)

Abstract

PURPOSE:To make a suitable decision, by changing a threshold level for deciding the continuity or discontinuity of a border segment, to a parameter, and making the threshold level variable adequately by an input picture characteristic, in a border segment extraction system for recognizing a character. CONSTITUTION:A rise detecting circuit 1 reads out, in order, a binary picture which is stored in a picture memory, detects its rise from ''0'' to ''1'', counts its rise position by a counter 17, and sets its contents to a register 4. This rise position is the first change point to black from white. A breaking detecting circuit 2 detects a change point to white from black in the same way, and the continuity of a border segment of a scanning character is decided by a threshold level, judging from a distance between these change points. In this case, the continuity of a border segment is decided by providing a threshold level deciding circuit 13 for selecting a characteristic of input picture information, and comparing a distance obtained by scanning, with a variable threshold level from the threshold level deciding circuit 13.
JP8470080A 1980-06-23 1980-06-23 Border segment extraction system Granted JPS5710884A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8470080A JPS5710884A (en) 1980-06-23 1980-06-23 Border segment extraction system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8470080A JPS5710884A (en) 1980-06-23 1980-06-23 Border segment extraction system

Publications (2)

Publication Number Publication Date
JPS5710884A true JPS5710884A (en) 1982-01-20
JPS6360436B2 JPS6360436B2 (en) 1988-11-24

Family

ID=13837934

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8470080A Granted JPS5710884A (en) 1980-06-23 1980-06-23 Border segment extraction system

Country Status (1)

Country Link
JP (1) JPS5710884A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2643996A1 (en) * 1989-03-04 1990-09-07 Brother Ind Ltd Device for converting data on a contour to data on points, including means for guaranteeing the continuity of visible representations reproduced by means of data on points

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2643996A1 (en) * 1989-03-04 1990-09-07 Brother Ind Ltd Device for converting data on a contour to data on points, including means for guaranteeing the continuity of visible representations reproduced by means of data on points

Also Published As

Publication number Publication date
JPS6360436B2 (en) 1988-11-24

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