JPS5650475A - Optical character reader - Google Patents

Optical character reader

Info

Publication number
JPS5650475A
JPS5650475A JP12502279A JP12502279A JPS5650475A JP S5650475 A JPS5650475 A JP S5650475A JP 12502279 A JP12502279 A JP 12502279A JP 12502279 A JP12502279 A JP 12502279A JP S5650475 A JPS5650475 A JP S5650475A
Authority
JP
Japan
Prior art keywords
image
processing
pattern
correlation
unit
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
JP12502279A
Other languages
Japanese (ja)
Other versions
JPS6217798B2 (en
Inventor
Norio Isshiki
Koji Sato
Akihiro Ooka
Fukuma Sakamoto
Masatoshi Tanaka
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP12502279A priority Critical patent/JPS5650475A/en
Publication of JPS5650475A publication Critical patent/JPS5650475A/en
Publication of JPS6217798B2 publication Critical patent/JPS6217798B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To make the unit small-size and improve the processing speed, by performing rough classification by the optical processing suitable for the two-dimensional processing and by determining characters finally by the digital processing of a high-precision electronic circuit.
CONSTITUTION: The observation unit irradiates the light transmitted from irradiation light source 25 to character surface 10, and the character pattern image is transmitted to recognition processing unit 15. In unit 15, this image is applied to picture conversion element 19 and photoelectric conversion part 26. The image applied to conversion part 26 is converted to an electric signal and is input to preprocessing part 28. The image applied to element 19 is read out by the light of read light source 20 and is converted to a Fourier conversion image by 21 and is incident onto picture file 22. The optical correlation between this image and the standard pattern is obtained in this file 22, and each correlation pattern is detected by correlation pattern detector 24. The input character pattern is classified roughly by next-stage correlation degree operation processing part 27. Next, input characters are discriminated and decided on a basis of this rough classification information and the signal from preprocessing part 28 by recognition processing part 29.
COPYRIGHT: (C)1981,JPO&Japio
JP12502279A 1979-09-28 1979-09-28 Optical character reader Granted JPS5650475A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12502279A JPS5650475A (en) 1979-09-28 1979-09-28 Optical character reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12502279A JPS5650475A (en) 1979-09-28 1979-09-28 Optical character reader

Publications (2)

Publication Number Publication Date
JPS5650475A true JPS5650475A (en) 1981-05-07
JPS6217798B2 JPS6217798B2 (en) 1987-04-20

Family

ID=14899910

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12502279A Granted JPS5650475A (en) 1979-09-28 1979-09-28 Optical character reader

Country Status (1)

Country Link
JP (1) JPS5650475A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58134372A (en) * 1982-02-05 1983-08-10 Fuji Electric Co Ltd Pattern checking device
JPS63674A (en) * 1987-05-22 1988-01-05 Fuji Electric Co Ltd Pattern inspection method
JPS6426285A (en) * 1987-07-02 1989-01-27 Nippon Sheet Glass Co Ltd Image recognizing device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58134372A (en) * 1982-02-05 1983-08-10 Fuji Electric Co Ltd Pattern checking device
JPH0210461B2 (en) * 1982-02-05 1990-03-08 Fuji Electric Co Ltd
JPS63674A (en) * 1987-05-22 1988-01-05 Fuji Electric Co Ltd Pattern inspection method
JPH033269B2 (en) * 1987-05-22 1991-01-18 Fuji Electric Co Ltd
JPS6426285A (en) * 1987-07-02 1989-01-27 Nippon Sheet Glass Co Ltd Image recognizing device

Also Published As

Publication number Publication date
JPS6217798B2 (en) 1987-04-20

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