DE69322561D1 - Kalibrierter Farbabtaster - Google Patents
Kalibrierter FarbabtasterInfo
- Publication number
- DE69322561D1 DE69322561D1 DE69322561T DE69322561T DE69322561D1 DE 69322561 D1 DE69322561 D1 DE 69322561D1 DE 69322561 T DE69322561 T DE 69322561T DE 69322561 T DE69322561 T DE 69322561T DE 69322561 D1 DE69322561 D1 DE 69322561D1
- Authority
- DE
- Germany
- Prior art keywords
- color scanner
- calibrated color
- calibrated
- scanner
- color
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/40—Picture signal circuits
- H04N1/40056—Circuits for driving or energising particular reading heads or original illumination means
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/40—Picture signal circuits
- H04N1/407—Control or modification of tonal gradation or of extreme levels, e.g. background level
- H04N1/4076—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on references outside the picture
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Scanning Arrangements (AREA)
- Facsimile Image Signal Circuits (AREA)
- Color Television Image Signal Generators (AREA)
- Processing Of Color Television Signals (AREA)
- Color Image Communication Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/937,216 US5237172A (en) | 1992-08-28 | 1992-08-28 | Calibrated color scanner with reference level adjustment |
Publications (1)
Publication Number | Publication Date |
---|---|
DE69322561D1 true DE69322561D1 (de) | 1999-01-28 |
Family
ID=25469633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69322561T Expired - Lifetime DE69322561D1 (de) | 1992-08-28 | 1993-08-26 | Kalibrierter Farbabtaster |
Country Status (4)
Country | Link |
---|---|
US (2) | US5424537A (de) |
EP (1) | EP0585124B1 (de) |
JP (1) | JPH06205166A (de) |
DE (1) | DE69322561D1 (de) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5625718A (en) * | 1992-02-25 | 1997-04-29 | Pfu Limited | White level setting system for an image scanner |
US5915049A (en) * | 1992-02-25 | 1999-06-22 | Pfu Limited | Binarization system for an image scanner |
US5386299A (en) * | 1993-03-12 | 1995-01-31 | Ncr Corporation | Method and appartus for automatically calibrating cameras used for document scanning |
DE69533812T2 (de) * | 1994-05-24 | 2005-12-15 | Pfu Ltd. | Bildabtaster mit Bildkorrekturfunktion |
EP0707408A1 (de) * | 1994-10-11 | 1996-04-17 | International Business Machines Corporation | Optisches Abtastgerät für durchsichtige Medien |
US5781314A (en) * | 1995-06-15 | 1998-07-14 | Nikon Corporation | Color image reading apparatus and method |
EP0850535B1 (de) * | 1995-09-14 | 1999-03-24 | Heidelberger Druckmaschinen Aktiengesellschaft | Verfahren zum weissabgleich |
US5621217A (en) * | 1995-09-28 | 1997-04-15 | Xerox Corporation | Apparatus and method for calibrating a digital scanner |
JP3596789B2 (ja) * | 1995-10-16 | 2004-12-02 | 富士写真フイルム株式会社 | 画像読取処理装置 |
KR100306419B1 (en) * | 1997-11-29 | 2001-08-09 | Samsung Electronics Co Ltd | Method for correcting shading of shuttle scanner |
DE19811279C2 (de) * | 1998-03-12 | 2001-12-06 | Heidelberger Druckmasch Ag | Verfahren zur automatischen Auswahl von Farbkalibrierungen |
US6327047B1 (en) * | 1999-01-22 | 2001-12-04 | Electronics For Imaging, Inc. | Automatic scanner calibration |
US6075613A (en) * | 1999-02-26 | 2000-06-13 | General Scanning, Inc. | Optical scanner calibration device |
US6406849B1 (en) * | 1999-10-29 | 2002-06-18 | Agilent Technologies, Inc. | Interrogating multi-featured arrays |
JP2002077614A (ja) | 2000-08-25 | 2002-03-15 | Seiko Epson Corp | 黒基準データ算出方法および画像読み取り装置 |
FR2815502B1 (fr) * | 2000-10-13 | 2002-12-13 | Commissariat Energie Atomique | Dispositif de detection d'un flux photonique a balayage autoadaptatif |
JP4485087B2 (ja) * | 2001-03-01 | 2010-06-16 | 株式会社半導体エネルギー研究所 | 半導体装置の動作方法 |
US7233418B2 (en) * | 2001-05-15 | 2007-06-19 | Hewlett-Packard Development Company, L.P. | Calibration method for quick scanning starts |
US6947187B2 (en) * | 2001-05-24 | 2005-09-20 | Hewlett-Packard Development Company, L.P. | Apparatus and method for calibrating a scanner with a document feeder |
US7433096B2 (en) * | 2003-02-28 | 2008-10-07 | Hewlett-Packard Development Company, L.P. | Scanning device calibration system and method |
US7433097B2 (en) * | 2003-04-18 | 2008-10-07 | Hewlett-Packard Development Company, L.P. | Optical image scanner with moveable calibration target |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3619493A (en) * | 1968-12-20 | 1971-11-09 | Graphic Sciences Inc | Automatic gain control for graphic data transmission system |
US3914538A (en) * | 1972-05-16 | 1975-10-21 | Xerox Corp | Facsimile communication system |
JPS6153868A (ja) * | 1984-08-24 | 1986-03-17 | Dainippon Screen Mfg Co Ltd | 画像走査信号処理におけるキャリブレーション装置 |
US4972273A (en) * | 1984-10-15 | 1990-11-20 | Burkhardt Norman S | High speed, high resolution image processing system |
US4694156A (en) * | 1986-02-14 | 1987-09-15 | Xerox Corporation | Pixel placement sensing arrangement using split detecting elements |
US5038225A (en) * | 1986-04-04 | 1991-08-06 | Canon Kabushiki Kaisha | Image reading apparatus with black-level and/or white level correction |
EP0254235B1 (de) * | 1986-07-18 | 1992-04-29 | Dainippon Screen Mfg. Co., Ltd. | Bild-Datenverarbeitungsverfahren und Anordnung dafür |
US4803556A (en) * | 1987-06-15 | 1989-02-07 | Xerox Corporation | Scan lamp intensity control for raster input scanners |
US4982294A (en) * | 1987-07-24 | 1991-01-01 | Eastman Kodak Company | Apparatus for enhancing and thresholding scanned microfilm images and methods for use therein |
JPH01115266A (ja) * | 1987-10-29 | 1989-05-08 | Ricoh Co Ltd | 原稿読取装置 |
US5267053A (en) * | 1988-10-27 | 1993-11-30 | Eastman Kodak Company | Automatic reference control for image scanners |
JPH02230869A (ja) * | 1989-03-03 | 1990-09-13 | Ricoh Co Ltd | ゲインコントロール回路 |
JP2918041B2 (ja) * | 1989-03-14 | 1999-07-12 | 株式会社リコー | 画像読取り装置 |
JPH0335233A (ja) * | 1989-06-30 | 1991-02-15 | Toshiba Corp | 画像形成装置 |
JP2512320Y2 (ja) * | 1989-09-21 | 1996-10-02 | 大日本スクリーン製造株式会社 | 画像処理条件設定装置 |
US5105266A (en) * | 1989-11-30 | 1992-04-14 | Eastman Kodak Company | Single pass color substitution |
US5185673A (en) * | 1991-06-12 | 1993-02-09 | Hewlett-Packard Company | Automated image calibration |
-
1990
- 1990-08-13 US US08/106,266 patent/US5424537A/en not_active Expired - Fee Related
-
1992
- 1992-08-28 US US07/937,216 patent/US5237172A/en not_active Expired - Fee Related
-
1993
- 1993-08-26 DE DE69322561T patent/DE69322561D1/de not_active Expired - Lifetime
- 1993-08-26 EP EP93306771A patent/EP0585124B1/de not_active Expired - Lifetime
- 1993-08-30 JP JP5214164A patent/JPH06205166A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
US5237172A (en) | 1993-08-17 |
US5424537A (en) | 1995-06-13 |
JPH06205166A (ja) | 1994-07-22 |
EP0585124B1 (de) | 1998-12-16 |
EP0585124A1 (de) | 1994-03-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8332 | No legal effect for de |