JPS5665275A - Pattern recognition system - Google Patents
Pattern recognition systemInfo
- Publication number
- JPS5665275A JPS5665275A JP14133679A JP14133679A JPS5665275A JP S5665275 A JPS5665275 A JP S5665275A JP 14133679 A JP14133679 A JP 14133679A JP 14133679 A JP14133679 A JP 14133679A JP S5665275 A JPS5665275 A JP S5665275A
- Authority
- JP
- Japan
- Prior art keywords
- pattern
- normal direction
- character
- sampling
- 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 get rid of a sampling error caused by turbulence of the central line, by sampling the directional property by executing the space differentiation to a pattern, without deriving the central line, in case of sampling the directional property of the character pattern.
CONSTITUTION: The pattern recognition system is constituted of CPU 101, the microprocessor 100 by the microprocessing unit MMU102, the scanning mechanism 300 for observing a character, the preprocessing unit 200 for preprocessing, the feature sampling unit 400, the recognition processing unit 500 for matching a pattern, and the output unit 600 for outputting the recognition result. And the space differential value of the orthogonal two axes of a two-dimensional character pattern obtained by photoelectric conversion is calculated, the normal direction of the gradient of the pattern is calculated from this differential value, and the quantized normal direction which has quantized the normal direction is derived. The directional freature is generated by adding the value according to strength of the gradient, to the feature face provided corresponding to this normal direction, the two- dimensional gradate processing is executed to this pattern, the pattern matching of said pattern and the standard pattern is executed in the prescribed direction, and the character is recognized.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14133679A JPS5665275A (en) | 1979-11-02 | 1979-11-02 | Pattern recognition system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14133679A JPS5665275A (en) | 1979-11-02 | 1979-11-02 | Pattern recognition system |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63035222A Division JPS63233487A (en) | 1988-02-19 | 1988-02-19 | Optical character reader |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5665275A true JPS5665275A (en) | 1981-06-02 |
JPS6365991B2 JPS6365991B2 (en) | 1988-12-19 |
Family
ID=15289574
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14133679A Granted JPS5665275A (en) | 1979-11-02 | 1979-11-02 | Pattern recognition system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5665275A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58200381A (en) * | 1982-05-18 | 1983-11-21 | Agency Of Ind Science & Technol | Character reader |
JPS62290985A (en) * | 1986-06-11 | 1987-12-17 | Hitachi Ltd | Pattern recognizing device |
-
1979
- 1979-11-02 JP JP14133679A patent/JPS5665275A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58200381A (en) * | 1982-05-18 | 1983-11-21 | Agency Of Ind Science & Technol | Character reader |
JPH0449153B2 (en) * | 1982-05-18 | 1992-08-10 | Kogyo Gijutsuin | |
JPS62290985A (en) * | 1986-06-11 | 1987-12-17 | Hitachi Ltd | Pattern recognizing device |
Also Published As
Publication number | Publication date |
---|---|
JPS6365991B2 (en) | 1988-12-19 |
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