DE3671117D1 - Verfahren und vorrichtung zur zeichenextraktion. - Google Patents
Verfahren und vorrichtung zur zeichenextraktion.Info
- Publication number
- DE3671117D1 DE3671117D1 DE8686906645T DE3671117T DE3671117D1 DE 3671117 D1 DE3671117 D1 DE 3671117D1 DE 8686906645 T DE8686906645 T DE 8686906645T DE 3671117 T DE3671117 T DE 3671117T DE 3671117 D1 DE3671117 D1 DE 3671117D1
- Authority
- DE
- Germany
- Prior art keywords
- character extraction
- character
- extraction
- 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.)
- Expired - Lifetime
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)
- Image Analysis (AREA)
- Facsimile Image Signal Circuits (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/796,454 US4742557A (en) | 1985-11-08 | 1985-11-08 | Adaptive character extraction method and system |
PCT/US1986/002211 WO1987003118A1 (en) | 1985-11-08 | 1986-10-20 | Method and apparatus for character extraction |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3671117D1 true DE3671117D1 (de) | 1990-06-13 |
Family
ID=25168224
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8686906645T Expired - Lifetime DE3671117D1 (de) | 1985-11-08 | 1986-10-20 | Verfahren und vorrichtung zur zeichenextraktion. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4742557A (de) |
EP (1) | EP0245359B1 (de) |
JP (1) | JPH0693250B2 (de) |
CA (1) | CA1262966A (de) |
DE (1) | DE3671117D1 (de) |
WO (1) | WO1987003118A1 (de) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0668763B2 (ja) * | 1988-04-11 | 1994-08-31 | 株式会社イーゼル | 画像処理方法 |
US5054101A (en) * | 1989-02-28 | 1991-10-01 | E. I. Du Pont De Nemours And Company | Thresholding of gray level images using fractal dimensions |
FR2665597B1 (fr) * | 1990-07-31 | 1995-11-17 | Thomson Trt Defense | Procede et dispositif de localisation en temps reel de contours rectilignes dans une image numerisee, notamment pour la reconnaissance de formes dans un traitement d'analyse de scene. |
FR2665598A1 (fr) * | 1990-07-31 | 1992-02-07 | Thomson Trt Defense | Procede pour determiner en temps reel l'existence d'une configuration rectiligne de pixels dans une image numerisee. |
US5345242A (en) * | 1990-09-27 | 1994-09-06 | Loral Aerospace Corp. | Clutter rejection using connectivity |
US5381241A (en) * | 1991-08-13 | 1995-01-10 | Sharp Corporation | Method for discriminating between figure and text areas of an image |
US5337373A (en) * | 1991-10-24 | 1994-08-09 | International Business Machines Corporation | Automatic threshold generation technique |
US10361802B1 (en) | 1999-02-01 | 2019-07-23 | Blanding Hovenweep, Llc | Adaptive pattern recognition based control system and method |
US8352400B2 (en) | 1991-12-23 | 2013-01-08 | Hoffberg Steven M | Adaptive pattern recognition based controller apparatus and method and human-factored interface therefore |
US5335293A (en) * | 1992-06-16 | 1994-08-02 | Key Technology, Inc. | Product inspection method and apparatus |
US5384860A (en) * | 1992-08-20 | 1995-01-24 | Loral Aerospace Corp. | Real time connectivity algorithm system |
US5651077A (en) * | 1993-12-21 | 1997-07-22 | Hewlett-Packard Company | Automatic threshold determination for a digital scanner |
US5724435A (en) * | 1994-04-15 | 1998-03-03 | Hewlett Packard Company | Digital filter and method of tracking a structure extending in three spatial dimensions |
US6166740A (en) * | 1994-04-15 | 2000-12-26 | Hewlett Packard Company | Method and system for viewing three-dimensional data for a tracked structure |
FR2769733B1 (fr) * | 1997-10-15 | 2000-01-07 | Jeffrey Horace Johnson | Procede d'extraction automatique d'inscriptions imprimees ou manuscrites sur un fond, dans une image numerique multiniveaux |
DE69822608T2 (de) | 1998-05-28 | 2005-01-05 | International Business Machines Corp. | Binarisierungsverfahren in einem Zeichenerkennungssystem |
US6222642B1 (en) * | 1998-08-10 | 2001-04-24 | Xerox Corporation | System and method for eliminating background pixels from a scanned image |
US8364136B2 (en) | 1999-02-01 | 2013-01-29 | Steven M Hoffberg | Mobile system, a method of operating mobile system and a non-transitory computer readable medium for a programmable control of a mobile system |
US7904187B2 (en) | 1999-02-01 | 2011-03-08 | Hoffberg Steven M | Internet appliance system and method |
US7003153B1 (en) * | 2000-09-29 | 2006-02-21 | Sharp Laboratories Of America, Inc. | Video contrast enhancement through partial histogram equalization |
US7512258B2 (en) * | 2005-07-19 | 2009-03-31 | The Boeing Company | System and method for passive wire detection |
JP4215038B2 (ja) * | 2005-09-16 | 2009-01-28 | セイコーエプソン株式会社 | 画像処理装置、画像処理方法、およびプログラム |
US7466243B2 (en) * | 2005-10-13 | 2008-12-16 | The Boeing Company | System and method for passive wire detection |
DE102007044575A1 (de) * | 2007-09-19 | 2009-04-16 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Verfahren zur Anpassung wenigstens eines Parameters in einem gesteuerten oder geregelten System eines Fahrzeugs |
US8073284B2 (en) | 2008-04-03 | 2011-12-06 | Seiko Epson Corporation | Thresholding gray-scale images to produce bitonal images |
TWI490760B (zh) * | 2012-04-03 | 2015-07-01 | Elan Microelectronics Corp | A method and an apparatus for improving noise interference of a capacitive touch device |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3715724A (en) * | 1969-12-24 | 1973-02-06 | Olivetti & Co Spa | Apparatus for recognizing graphic symbols |
US3737855A (en) * | 1971-09-30 | 1973-06-05 | Ibm | Character video enhancement system |
US4554593A (en) * | 1981-01-02 | 1985-11-19 | International Business Machines Corporation | Universal thresholder/discriminator |
ATE41833T1 (de) * | 1981-01-05 | 1989-04-15 | Image Processing Tech | Verfahren und geraet zur umwandlung eines musters in eine binaere form. |
US4544393A (en) * | 1984-05-22 | 1985-10-01 | Owens-Corning Fiberglas Corporation | Rotary fiber forming method and apparatus |
US4656665A (en) * | 1985-01-15 | 1987-04-07 | International Business Machines Corporation | Thresholding technique for graphics images using histogram analysis |
US4646355A (en) * | 1985-03-15 | 1987-02-24 | Tektronix, Inc. | Method and apparatus for input picture enhancement by removal of undersired dots and voids |
-
1985
- 1985-11-08 US US06/796,454 patent/US4742557A/en not_active Expired - Lifetime
-
1986
- 1986-10-20 EP EP86906645A patent/EP0245359B1/de not_active Expired - Lifetime
- 1986-10-20 DE DE8686906645T patent/DE3671117D1/de not_active Expired - Lifetime
- 1986-10-20 WO PCT/US1986/002211 patent/WO1987003118A1/en active IP Right Grant
- 1986-10-20 JP JP61505866A patent/JPH0693250B2/ja not_active Expired - Lifetime
- 1986-10-27 CA CA000521468A patent/CA1262966A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0245359B1 (de) | 1990-05-09 |
JPS63501323A (ja) | 1988-05-19 |
WO1987003118A1 (en) | 1987-05-21 |
CA1262966A (en) | 1989-11-14 |
US4742557A (en) | 1988-05-03 |
EP0245359A1 (de) | 1987-11-19 |
JPH0693250B2 (ja) | 1994-11-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8328 | Change in the person/name/address of the agent |
Free format text: KAHLER, K., DIPL.-ING., 8948 MINDELHEIM KAECK, J., DIPL.-ING. DIPL.-WIRTSCH.-ING., PAT.-ANWAELTE, 8910 LANDSBERG |
|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: NCR INTERNATIONAL INC., DAYTON, OHIO, US |
|
8328 | Change in the person/name/address of the agent |
Free format text: KAHLER, K., DIPL.-ING., 8948 MINDELHEIM KAECK, J., DIPL.-ING. DIPL.-WIRTSCH.-ING., 8910 LANDSBERG FIENER, J., PAT.-ANWAELTE, 8948 MINDELHEIM |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: AT&T GLOBAL INFORMATION SOLUTIONS INTERNATIONAL IN |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: NCR INTERNATIONAL, INC. (N.D.GES.D.STAATES DELAWAR |
|
8328 | Change in the person/name/address of the agent |
Free format text: V. BEZOLD & SOZIEN, 80799 MUENCHEN |
|
8339 | Ceased/non-payment of the annual fee |