DE69125139T2 - Verfahren und Vorrichtung zur Korrektur von Weisschattierungen - Google Patents
Verfahren und Vorrichtung zur Korrektur von WeisschattierungenInfo
- Publication number
- DE69125139T2 DE69125139T2 DE69125139T DE69125139T DE69125139T2 DE 69125139 T2 DE69125139 T2 DE 69125139T2 DE 69125139 T DE69125139 T DE 69125139T DE 69125139 T DE69125139 T DE 69125139T DE 69125139 T2 DE69125139 T2 DE 69125139T2
- Authority
- DE
- Germany
- Prior art keywords
- shades
- correcting
- white
- correcting shades
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/80—Camera processing pipelines; Components thereof
- H04N23/81—Camera processing pipelines; Components thereof for suppressing or minimising disturbance in the image signal generation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise
- H04N25/61—Noise processing, e.g. detecting, correcting, reducing or removing noise the noise originating only from the lens unit, e.g. flare, shading, vignetting or "cos4"
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/660,698 US5157497A (en) | 1991-02-25 | 1991-02-25 | Method and apparatus for detecting and compensating for white shading errors in a digitized video signal |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69125139D1 DE69125139D1 (de) | 1997-04-17 |
DE69125139T2 true DE69125139T2 (de) | 1997-09-25 |
Family
ID=24650601
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69125139T Expired - Fee Related DE69125139T2 (de) | 1991-02-25 | 1991-12-19 | Verfahren und Vorrichtung zur Korrektur von Weisschattierungen |
Country Status (4)
Country | Link |
---|---|
US (1) | US5157497A (de) |
EP (1) | EP0501075B1 (de) |
JP (1) | JPH04330872A (de) |
DE (1) | DE69125139T2 (de) |
Families Citing this family (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5374996A (en) * | 1991-06-26 | 1994-12-20 | Matsushita Electric Industrial Co., Ltd. | Image processing system |
US5202762A (en) * | 1991-09-10 | 1993-04-13 | Ultimatte Corporation | Method and apparatus for applying correction to a signal used to modulate a background video signal to be combined with a foreground video signal |
JP3191354B2 (ja) * | 1991-11-15 | 2001-07-23 | ソニー株式会社 | シェーディング補正回路 |
US5303056A (en) * | 1992-09-14 | 1994-04-12 | Eastman Kodak Company | Dynamic gain correction for CRT printing |
KR100203239B1 (ko) * | 1995-02-16 | 1999-06-15 | 윤종용 | 화이트쉐이딩 보정방법 및 장치 |
JP3968533B2 (ja) * | 1996-04-17 | 2007-08-29 | 富士フイルム株式会社 | フイルム画像入力装置及び方法 |
US6100920A (en) * | 1997-01-31 | 2000-08-08 | Circon Corporation | Video signal compensator for compensating differential picture brightness of an optical image due to uneven illumination and method |
US7453490B2 (en) * | 1997-01-31 | 2008-11-18 | Gyrus Acmi, Inc. | Correction of image signals characteristic of non-uniform images in an endoscopic imaging system |
US6542185B1 (en) * | 1998-01-07 | 2003-04-01 | Intel Corporation | Method and apparatus for automated optimization of white and color balance on video camera |
US6178255B1 (en) | 1998-04-28 | 2001-01-23 | Cross Match Technologies, Inc. | Individualized fingerprint scanner |
US6886104B1 (en) | 1999-06-25 | 2005-04-26 | Cross Match Technologies | Rechargeable mobile hand-held fingerprint scanner with a data and power communication interface |
US6744910B1 (en) * | 1999-06-25 | 2004-06-01 | Cross Match Technologies, Inc. | Hand-held fingerprint scanner with on-board image normalization data storage |
JP3854754B2 (ja) * | 1999-06-30 | 2006-12-06 | キヤノン株式会社 | 撮像装置、画像処理装置及びその方法、並びにメモリ媒体 |
DE60027207T2 (de) | 2000-08-18 | 2006-11-16 | Cross Match Technologies, Inc., Palm Beach Gardens | System und verfahren zum automatischen steuern eines fingerabdruckabtasters |
US6928195B2 (en) * | 2000-12-18 | 2005-08-09 | Cross Match Technologies, Inc. | Palm scanner using a programmable nutating mirror for increased resolution |
WO2002088878A2 (en) * | 2001-04-26 | 2002-11-07 | Cross Match Technologies, Inc. | Silicone rubber surfaces for biometric print tir prisms |
JP4452497B2 (ja) * | 2001-07-12 | 2010-04-21 | ディーエックスオー ラブズ | ノイズを考慮してデジタルイメージを修正する方法およびシステム |
US20030149343A1 (en) * | 2001-09-26 | 2003-08-07 | Cross Match Technologies, Inc. | Biometric based facility security |
US6954260B2 (en) * | 2002-01-17 | 2005-10-11 | Cross Match Technologies, Inc. | Systems and methods for illuminating a platen in a print scanner |
US6867850B2 (en) * | 2002-01-17 | 2005-03-15 | Cross Match Technologies, Inc. | Light wedge for illuminating a platen in a print scanner |
AU2003207563A1 (en) * | 2002-01-17 | 2003-09-02 | Cross Match Technologies, Inc. | Fingerprint workstation and methods |
US6944768B2 (en) * | 2002-04-19 | 2005-09-13 | Cross Match Technologies, Inc. | System and methods for access control utilizing two factors to control access |
US7079007B2 (en) | 2002-04-19 | 2006-07-18 | Cross Match Technologies, Inc. | Systems and methods utilizing biometric data |
US7073711B2 (en) | 2002-04-19 | 2006-07-11 | Cross Match Technologies, Inc. | Mobile handheld code reader and print scanner system and method |
US6996259B2 (en) * | 2002-08-02 | 2006-02-07 | Cross Match Technologies, Inc. | System and method for counting ridges in a captured print image |
US7164440B2 (en) | 2003-02-28 | 2007-01-16 | Cross Match Technologies, Inc. | Dynamic image adaptation method for adjusting the quality of digital prints |
US7277562B2 (en) | 2003-08-01 | 2007-10-02 | Cross Match Technologies, Inc. | Biometric imaging capture system and method |
WO2005043893A1 (ja) * | 2003-11-04 | 2005-05-12 | Matsushita Electric Industrial Co., Ltd. | 撮像装置 |
JP4229053B2 (ja) * | 2004-12-06 | 2009-02-25 | ソニー株式会社 | 撮像装置、撮像方法及び撮像処理のためのプログラム |
US7634152B2 (en) * | 2005-03-07 | 2009-12-15 | Hewlett-Packard Development Company, L.P. | System and method for correcting image vignetting |
DE102006031757A1 (de) * | 2006-01-04 | 2007-08-02 | Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg | Verfahren zur automatischen Korrektur von Bildfehlern in Video-Assist-Bildern eines Video-Assist-Systems |
DE102006003596A1 (de) * | 2006-01-25 | 2007-07-26 | Sick Ag | Verfahren und Vorrichtung zur Korrektur der Helligkeit eines durch eine Sensormatrix erzeugten Rohbilds |
US20080137985A1 (en) * | 2006-12-08 | 2008-06-12 | Alexander Mokhnatyuk | Method, apparatus and system providing column shading correction for image sensor arrays |
KR100911378B1 (ko) * | 2007-02-23 | 2009-08-10 | 삼성전자주식회사 | 렌즈 교정 방법 및 렌즈 교정 장치 |
US8463068B2 (en) * | 2007-08-09 | 2013-06-11 | Micron Technology, Inc. | Methods, systems and apparatuses for pixel value correction using multiple vertical and/or horizontal correction curves |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4285004A (en) * | 1980-02-25 | 1981-08-18 | Ampex Corporation | Total raster error correction apparatus and method for the automatic set up of television cameras and the like |
US4312014A (en) * | 1980-04-11 | 1982-01-19 | Ampex Corporation | Input video processor for color television cameras |
US4354243A (en) * | 1980-04-11 | 1982-10-12 | Ampex Corporation | Two dimensional interpolation circuit for spatial and shading error corrector systems |
US4326219A (en) * | 1980-04-11 | 1982-04-20 | Ampex Corporation | Digital error measuring circuit for shading and registration errors in television cameras |
US4486781A (en) * | 1982-04-19 | 1984-12-04 | Xerox Corporation | Video signal white level corrector |
JPS5916464A (ja) * | 1982-07-20 | 1984-01-27 | Fuji Xerox Co Ltd | シエ−デイング補正装置 |
JPS59125176A (ja) * | 1982-12-30 | 1984-07-19 | インタ−ナシヨナル ビジネス マシ−ンズ コ−ポレ−シヨン | ビデオイメ−ジのシエ−ジング効果の補正装置 |
DE3527301A1 (de) * | 1984-07-31 | 1986-02-13 | Canon K.K., Tokio/Tokyo | Bildleseeinrichtung |
JP2542578B2 (ja) * | 1986-03-25 | 1996-10-09 | 株式会社東芝 | シエ−デイング補正信号発生回路 |
US4698685A (en) * | 1986-05-28 | 1987-10-06 | Rca Corporation | Apparatus and method for correcting CCD pixel nonuniformities |
US4945405A (en) * | 1987-05-21 | 1990-07-31 | Minolta Camera Kabushiki Kaisha | Color image read apparatus with shading and color balance correction |
JPH01186064A (ja) * | 1988-01-20 | 1989-07-25 | Sanyo Electric Co Ltd | シェーディング補正回路 |
JPH01273484A (ja) * | 1988-04-26 | 1989-11-01 | Matsushita Electric Ind Co Ltd | シェーディング補正装置 |
JPH0287783A (ja) * | 1988-09-26 | 1990-03-28 | Hitachi Ltd | シェーデイング補正回路 |
US4962425A (en) * | 1988-10-27 | 1990-10-09 | National Research Council Of Canada/Conseil National Deresherches Canada | Photometric device |
JPH0313074A (ja) * | 1989-06-09 | 1991-01-22 | Canon Inc | 画像処理システム |
JPH0341876A (ja) * | 1989-07-07 | 1991-02-22 | Fuji Photo Film Co Ltd | 画像信号補正方法 |
US5047861A (en) * | 1990-07-31 | 1991-09-10 | Eastman Kodak Company | Method and apparatus for pixel non-uniformity correction |
-
1991
- 1991-02-25 US US07/660,698 patent/US5157497A/en not_active Expired - Lifetime
- 1991-12-19 EP EP91311821A patent/EP0501075B1/de not_active Expired - Lifetime
- 1991-12-19 DE DE69125139T patent/DE69125139T2/de not_active Expired - Fee Related
-
1992
- 1992-02-24 JP JP4036186A patent/JPH04330872A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
EP0501075A3 (en) | 1993-06-30 |
EP0501075A2 (de) | 1992-09-02 |
EP0501075B1 (de) | 1997-03-12 |
DE69125139D1 (de) | 1997-04-17 |
JPH04330872A (ja) | 1992-11-18 |
US5157497A (en) | 1992-10-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |