JPS5585972A - Misreading prevention unit - Google Patents
Misreading prevention unitInfo
- Publication number
- JPS5585972A JPS5585972A JP16069878A JP16069878A JPS5585972A JP S5585972 A JPS5585972 A JP S5585972A JP 16069878 A JP16069878 A JP 16069878A JP 16069878 A JP16069878 A JP 16069878A JP S5585972 A JPS5585972 A JP S5585972A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- character
- signal
- binary
- misreading
- 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
Landscapes
- Character Input (AREA)
- Character Discrimination (AREA)
Abstract
PURPOSE: To reduce the rate of misreading of OCR, by providing the circuit in which the video signal is binarized with floating slice in response to the contrast of background and the comparison circuit binarized with the fixed slice level for processing.
CONSTITUTION: The video signal is converted into digital signal Y of 16-value at the A/D converter 1, and this is converted into the video signals Z1, Z2 of binary respectively at the binary circuit 2 and comparator 3. The circuit performs binary with the floating slice level changed according to the contrast of the background of character and the comparator 3 performs it with the fixed slice level in the level requested for the read-in as character. The signals Z1, Z2 are stored in the memory 4, the signal Z1 is fed to the segmentation circuit 7, counter 5 and character identifying circuit 9, and the signal Z2 is fed to the counter 6. The number of black video elements for the character is counted at the counters 5, 6, and the output is compared for the magnitude between the ratio of the count value of the counters 5, 6 and the set value. When the ratio of the count value is less than the set value, the character recognition of the signal Z1 is inhibited at the circuit 9 to prevent misreading.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16069878A JPS5585972A (en) | 1978-12-21 | 1978-12-21 | Misreading prevention unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16069878A JPS5585972A (en) | 1978-12-21 | 1978-12-21 | Misreading prevention unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5585972A true JPS5585972A (en) | 1980-06-28 |
Family
ID=15720529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16069878A Pending JPS5585972A (en) | 1978-12-21 | 1978-12-21 | Misreading prevention unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5585972A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6122077A (en) * | 1996-12-11 | 2000-09-19 | Pfu Limited | Image scanner |
-
1978
- 1978-12-21 JP JP16069878A patent/JPS5585972A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6122077A (en) * | 1996-12-11 | 2000-09-19 | Pfu Limited | Image scanner |
| US6333795B1 (en) | 1996-12-11 | 2001-12-25 | Pfu Limited | Image scanner |
| US6760131B2 (en) | 1996-12-11 | 2004-07-06 | Pfu Limited | Image scanner |
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