CH534395A - Method and device for reducing or eliminating the influence of differences in contrast and background brightness on the classification of characters in raster processes - Google Patents
Method and device for reducing or eliminating the influence of differences in contrast and background brightness on the classification of characters in raster processesInfo
- Publication number
- CH534395A CH534395A CH1203071A CH1203071A CH534395A CH 534395 A CH534395 A CH 534395A CH 1203071 A CH1203071 A CH 1203071A CH 1203071 A CH1203071 A CH 1203071A CH 534395 A CH534395 A CH 534395A
- Authority
- CH
- Switzerland
- Prior art keywords
- characters
- classification
- eliminating
- differences
- contrast
- Prior art date
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
- G06V30/16—Image preprocessing
- G06V30/162—Quantising the image signal
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Character Input (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702044795 DE2044795B2 (en) | 1970-09-10 | 1970-09-10 | PROCESS FOR REDUCING OR ELIMINATING THE INFLUENCE OF DIFFERENCES IN CONTRAST AND BACKGROUND BRIGHTNESS ON THE CLASSIFICATION OF CHARACTERS DURING SCREEN DRIVING AND DEVICE FOR PERFORMING THE PROCESS |
Publications (1)
Publication Number | Publication Date |
---|---|
CH534395A true CH534395A (en) | 1973-02-28 |
Family
ID=5782071
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1203071A CH534395A (en) | 1970-09-10 | 1971-08-17 | Method and device for reducing or eliminating the influence of differences in contrast and background brightness on the classification of characters in raster processes |
Country Status (8)
Country | Link |
---|---|
CA (1) | CA941969A (en) |
CH (1) | CH534395A (en) |
DD (1) | DD95476A1 (en) |
DE (1) | DE2044795B2 (en) |
FR (1) | FR2107322A5 (en) |
GB (1) | GB1345054A (en) |
NL (1) | NL7112496A (en) |
SE (1) | SE385160B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7604987A (en) * | 1976-05-11 | 1977-11-15 | Bell Telephone Mfg | SIGNAL VALUATION EQUIPMENT. |
GB2054927B (en) * | 1979-07-20 | 1984-01-11 | Sumitomo Electric Industries | Binary coding circuit |
-
1970
- 1970-09-10 DE DE19702044795 patent/DE2044795B2/en active Pending
-
1971
- 1971-08-17 CH CH1203071A patent/CH534395A/en not_active IP Right Cessation
- 1971-09-06 FR FR7132152A patent/FR2107322A5/fr not_active Expired
- 1971-09-09 SE SE7111440A patent/SE385160B/en unknown
- 1971-09-09 DD DD157649A patent/DD95476A1/xx unknown
- 1971-09-09 CA CA122,480A patent/CA941969A/en not_active Expired
- 1971-09-10 GB GB4239871A patent/GB1345054A/en not_active Expired
- 1971-09-10 NL NL7112496A patent/NL7112496A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
DE2044795B2 (en) | 1972-02-03 |
FR2107322A5 (en) | 1972-05-05 |
DD95476A1 (en) | 1973-02-12 |
NL7112496A (en) | 1972-03-14 |
GB1345054A (en) | 1974-01-30 |
DE2044795A1 (en) | 1972-02-03 |
SE385160B (en) | 1976-06-08 |
CA941969A (en) | 1974-02-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |