SE7714269L - Anpassbar korrelator for optisk teckenlesare - Google Patents
Anpassbar korrelator for optisk teckenlesareInfo
- Publication number
- SE7714269L SE7714269L SE7714269A SE7714269A SE7714269L SE 7714269 L SE7714269 L SE 7714269L SE 7714269 A SE7714269 A SE 7714269A SE 7714269 A SE7714269 A SE 7714269A SE 7714269 L SE7714269 L SE 7714269L
- Authority
- SE
- Sweden
- Prior art keywords
- correlator
- adaptable
- optical drawing
- drawing reader
- reader
- 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)
- Facsimile Image Signal Circuits (AREA)
- Character Input (AREA)
- Holo Graphy (AREA)
- Character Discrimination (AREA)
- Image Analysis (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/753,665 US4162481A (en) | 1976-12-22 | 1976-12-22 | Adaptive correlator for video processing |
Publications (2)
Publication Number | Publication Date |
---|---|
SE7714269L true SE7714269L (sv) | 1978-06-23 |
SE441222B SE441222B (sv) | 1985-09-16 |
Family
ID=25031634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7714269A SE441222B (sv) | 1976-12-22 | 1977-12-15 | Anpassbar korrelator och sett for att kontinuerligt henfora reflexionsformagan hos ytan pa ett tryckt dokument till ett referensverde |
Country Status (7)
Country | Link |
---|---|
US (1) | US4162481A (sv) |
DE (1) | DE2757456A1 (sv) |
FR (1) | FR2375663A1 (sv) |
GB (1) | GB1555825A (sv) |
NL (1) | NL7712454A (sv) |
NO (1) | NO774397L (sv) |
SE (1) | SE441222B (sv) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4244029A (en) * | 1977-12-12 | 1981-01-06 | Goodyear Aerospace Corporation | Digital video correlator |
US4200861A (en) * | 1978-09-01 | 1980-04-29 | View Engineering, Inc. | Pattern recognition apparatus and method |
US4326258A (en) * | 1980-01-31 | 1982-04-20 | Ncr Canada Ltd - Ncr Canada Ltee | Method and apparatus for reducing the gray scale resolution of a digitized image |
DE3019836A1 (de) * | 1980-05-23 | 1982-01-21 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zum automatischen erkennen von bild- und text- oder graphikbereichen auf druckvorlagen |
US4475234A (en) * | 1981-02-04 | 1984-10-02 | Nippon Electric Co., Ltd. | Binary pattern signal producing apparatus for optical character recognition |
US4408343A (en) * | 1981-02-27 | 1983-10-04 | Burroughs Corporation | Image enhancement for optical character readers |
US4542527A (en) * | 1982-05-17 | 1985-09-17 | Tokyo Shibaura Denki Kabushiki Kaisha | Image processing device for continuously extracting features of small regions of an image |
JP2569303B2 (ja) * | 1985-07-05 | 1997-01-08 | 日本電装株式会社 | 画像デ−タの累積加算を行う画像処理装置 |
US4799268A (en) * | 1985-11-12 | 1989-01-17 | Usm Corporation | Lead sense system for component insertion machine |
JPS62278682A (ja) * | 1986-05-27 | 1987-12-03 | Fanuc Ltd | 画像処理装置 |
US4949391A (en) * | 1986-09-26 | 1990-08-14 | Everex Ti Corporation | Adaptive image acquisition system |
US5025480A (en) * | 1987-03-23 | 1991-06-18 | Eastman Kodak Company | Background referencing |
US4882629A (en) * | 1987-05-08 | 1989-11-21 | Everex Ti Corporation | Adaptive exposure control system |
GB2205464B (en) * | 1987-06-05 | 1991-12-11 | Gec Avionics | Image processing apparatus |
US4853795A (en) * | 1987-07-24 | 1989-08-01 | Eastman Kodak Company | Forward look ahead techniques for tracking background and noise levels in scanned video images |
US4982294A (en) * | 1987-07-24 | 1991-01-01 | Eastman Kodak Company | Apparatus for enhancing and thresholding scanned microfilm images and methods for use therein |
US5042076A (en) * | 1988-12-02 | 1991-08-20 | Electrocom Automation, Inc. | Programmable optical character recognition |
US5029226A (en) * | 1989-10-10 | 1991-07-02 | Unisys Corporation | Method and apparatus for effecting spot/void filtering of image data |
US5065443A (en) * | 1989-12-04 | 1991-11-12 | Allen-Bradley Company, Inc. | Image processor with illumination variation compensation |
US5245421A (en) * | 1990-09-19 | 1993-09-14 | Control Automation, Incorporated | Apparatus for inspecting printed circuit boards with surface mounted components |
US5133022A (en) * | 1991-02-06 | 1992-07-21 | Recognition Equipment Incorporated | Normalizing correlator for video processing |
DE19536170A1 (de) * | 1995-09-29 | 1997-04-03 | Ibm | Ermittlung von Schwellwerten bei der Digitalisierung von Bildern durch eine Verteilungsanalyse der Informationen |
DE19841001C1 (de) * | 1998-09-08 | 2000-04-20 | Siemens Ag | Verfahren und Vorrichtung zur kapazitiven Bilderfassung |
US7565034B2 (en) * | 2004-06-17 | 2009-07-21 | Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. | Determination of a navigation window in an optical navigation system |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL268306A (sv) * | 1957-05-17 | |||
GB1117170A (en) * | 1966-12-15 | 1968-06-19 | Mullard Ltd | Improvements in or relating to apparatus for determining a suitable threshold level with which to detect a wanted signal in the presence of noise |
US3622802A (en) * | 1969-05-15 | 1971-11-23 | Recognition Equipment Inc | Differential amplifier system |
US3723970A (en) * | 1971-01-04 | 1973-03-27 | Scan Optics Inc | Optical character recognition system |
US3761876A (en) * | 1971-07-28 | 1973-09-25 | Recognition Equipment Inc | Recognition unit for optical character reading system |
US3705383A (en) * | 1971-08-06 | 1972-12-05 | William W Frayer | Biological sample pattern analysis method and apparatus |
US3737855A (en) * | 1971-09-30 | 1973-06-05 | Ibm | Character video enhancement system |
JPS5231134B2 (sv) * | 1972-01-24 | 1977-08-12 | ||
US3999047A (en) * | 1972-09-05 | 1976-12-21 | Green James E | Method and apparatus utilizing color algebra for analyzing scene regions |
US3918049A (en) * | 1972-12-26 | 1975-11-04 | Ibm | Thresholder for analog signals |
US3973239A (en) * | 1973-10-17 | 1976-08-03 | Hitachi, Ltd. | Pattern preliminary processing system |
IT1055651B (it) * | 1975-11-03 | 1982-01-11 | Elsag | Sistema elettronico per la lettura di simboli |
-
1976
- 1976-12-22 US US05/753,665 patent/US4162481A/en not_active Expired - Lifetime
-
1977
- 1977-09-29 GB GB40517/77A patent/GB1555825A/en not_active Expired
- 1977-11-11 NL NL7712454A patent/NL7712454A/xx not_active Application Discontinuation
- 1977-12-15 SE SE7714269A patent/SE441222B/sv unknown
- 1977-12-21 NO NO774397A patent/NO774397L/no unknown
- 1977-12-22 DE DE19772757456 patent/DE2757456A1/de active Granted
- 1977-12-22 FR FR7738843A patent/FR2375663A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
NO774397L (no) | 1978-06-23 |
DE2757456C2 (sv) | 1988-04-14 |
SE441222B (sv) | 1985-09-16 |
US4162481A (en) | 1979-07-24 |
FR2375663B1 (sv) | 1984-08-24 |
DE2757456A1 (de) | 1978-06-29 |
NL7712454A (nl) | 1978-06-26 |
FR2375663A1 (fr) | 1978-07-21 |
GB1555825A (en) | 1979-11-14 |
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