JPS57187779A - Character recognizing device - Google Patents
Character recognizing deviceInfo
- Publication number
- JPS57187779A JPS57187779A JP56071707A JP7170781A JPS57187779A JP S57187779 A JPS57187779 A JP S57187779A JP 56071707 A JP56071707 A JP 56071707A JP 7170781 A JP7170781 A JP 7170781A JP S57187779 A JPS57187779 A JP S57187779A
- Authority
- JP
- Japan
- Prior art keywords
- character
- outline
- coordinates
- point
- read
- 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.)
- Pending
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
- G06V30/18—Extraction of features or characteristics of the image
- G06V30/182—Extraction of features or characteristics of the image by coding the contour of the pattern
-
- 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
Abstract
PURPOSE:To realize the character recognition which is not affected by the size and the distortion of characters, by detecting the outline of a character as coordinate values after reading the character optically to store it in a memory and detecting change points of the outline on a basis of these coordinate values to extract features. CONSTITUTION:The surface of a medium where characters are written is scanned by an optical reader 11, and the white or the black state of each coordinate point is read and is stored in a memory (RAM)12, and isolated black points are eliminated in a preprocessing part 13, and features are extracted in a feature extracting part 14. In the feature extracting part 14, information in the RAM12 are used in an outline tracking part 21 to read X and Y coordinates while detecting only the outline of a character clockwise with the apex of the black point as the start point, and this coordinate read is terminated by the return to the start point. A direction change point detector 22 uses these X and Y coordinates to detect change points where X and Y coordinates are changed from increment to reduction or from reduction to increment, and an order is given to these data to output them, and these data are stored in a storage device 23. These stored contents are compared with contents of a reference data storage part 17 in a recognizing part 15 to identify the character.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56071707A JPS57187779A (en) | 1981-05-13 | 1981-05-13 | Character recognizing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56071707A JPS57187779A (en) | 1981-05-13 | 1981-05-13 | Character recognizing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57187779A true JPS57187779A (en) | 1982-11-18 |
Family
ID=13468273
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56071707A Pending JPS57187779A (en) | 1981-05-13 | 1981-05-13 | Character recognizing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57187779A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008254328A (en) * | 2007-04-05 | 2008-10-23 | Pilot Corporation | Knock type writing instrument |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5394726A (en) * | 1977-01-31 | 1978-08-19 | Oki Electric Ind Co Ltd | Stroke extracting method |
-
1981
- 1981-05-13 JP JP56071707A patent/JPS57187779A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5394726A (en) * | 1977-01-31 | 1978-08-19 | Oki Electric Ind Co Ltd | Stroke extracting method |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008254328A (en) * | 2007-04-05 | 2008-10-23 | Pilot Corporation | Knock type writing instrument |
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