JPS5650475A - Optical character reader - Google Patents
Optical character readerInfo
- 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
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
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)
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 |
-
1979
- 1979-09-28 JP JP12502279A patent/JPS5650475A/en active Granted
Cited By (5)
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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