JPS5647876A - Character recognition system - Google Patents

Character recognition system

Info

Publication number
JPS5647876A
JPS5647876A JP12411979A JP12411979A JPS5647876A JP S5647876 A JPS5647876 A JP S5647876A JP 12411979 A JP12411979 A JP 12411979A JP 12411979 A JP12411979 A JP 12411979A JP S5647876 A JPS5647876 A JP S5647876A
Authority
JP
Japan
Prior art keywords
contour
convex
derived
concave
maximum value
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
JP12411979A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6221154B2 (cg-RX-API-DMAC7.html
Inventor
Yasuaki Nakano
Hiromichi Fujisawa
Shunichi Yajima
Masao Yamamoto
Osamu Kunisaki
Toshitsugu Ozaki
Saiji Kageyama
Toshihiro Hananoi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12411979A priority Critical patent/JPS5647876A/ja
Publication of JPS5647876A publication Critical patent/JPS5647876A/ja
Publication of JPS6221154B2 publication Critical patent/JPS6221154B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Character Discrimination (AREA)
JP12411979A 1979-09-28 1979-09-28 Character recognition system Granted JPS5647876A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12411979A JPS5647876A (en) 1979-09-28 1979-09-28 Character recognition system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12411979A JPS5647876A (en) 1979-09-28 1979-09-28 Character recognition system

Publications (2)

Publication Number Publication Date
JPS5647876A true JPS5647876A (en) 1981-04-30
JPS6221154B2 JPS6221154B2 (cg-RX-API-DMAC7.html) 1987-05-11

Family

ID=14877386

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12411979A Granted JPS5647876A (en) 1979-09-28 1979-09-28 Character recognition system

Country Status (1)

Country Link
JP (1) JPS5647876A (cg-RX-API-DMAC7.html)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01258083A (ja) * 1988-04-07 1989-10-16 Nec Corp 文字特徴抽出回路
US5054094A (en) * 1990-05-07 1991-10-01 Eastman Kodak Company Rotationally impervious feature extraction for optical character recognition

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01258083A (ja) * 1988-04-07 1989-10-16 Nec Corp 文字特徴抽出回路
US5054094A (en) * 1990-05-07 1991-10-01 Eastman Kodak Company Rotationally impervious feature extraction for optical character recognition

Also Published As

Publication number Publication date
JPS6221154B2 (cg-RX-API-DMAC7.html) 1987-05-11

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