DE69125139D1 - Verfahren und Vorrichtung zur Korrektur von Weisschattierungen - Google Patents

Verfahren und Vorrichtung zur Korrektur von Weisschattierungen

Info

Publication number
DE69125139D1
DE69125139D1 DE69125139T DE69125139T DE69125139D1 DE 69125139 D1 DE69125139 D1 DE 69125139D1 DE 69125139 T DE69125139 T DE 69125139T DE 69125139 T DE69125139 T DE 69125139T DE 69125139 D1 DE69125139 D1 DE 69125139D1
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
Application number
DE69125139T
Other languages
English (en)
Other versions
DE69125139T2 (de
Inventor
Robert Joseph Topper
Lee Robert Dischert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of DE69125139D1 publication Critical patent/DE69125139D1/de
Publication of DE69125139T2 publication Critical patent/DE69125139T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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"

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
DE69125139T 1991-02-25 1991-12-19 Verfahren und Vorrichtung zur Korrektur von Weisschattierungen Expired - Fee Related DE69125139T2 (de)

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 true DE69125139D1 (de) 1997-04-17
DE69125139T2 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)

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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
US6744910B1 (en) * 1999-06-25 2004-06-01 Cross Match Technologies, Inc. Hand-held fingerprint scanner with on-board image normalization data storage
US6886104B1 (en) 1999-06-25 2005-04-26 Cross Match Technologies Rechargeable mobile hand-held fingerprint scanner with a data and power communication interface
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
KR100940148B1 (ko) * 2001-07-12 2010-02-03 도 랩스 디지털 영상을 그 잡음을 고려하여 수정하기 위한 방법 및시스템
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
US7073711B2 (en) 2002-04-19 2006-07-11 Cross Match Technologies, Inc. Mobile handheld code reader and print scanner system and method
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
AU2003254280A1 (en) * 2002-08-02 2004-02-23 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)

* Cited by examiner, † Cited by third party
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
US4326219A (en) * 1980-04-11 1982-04-20 Ampex Corporation Digital error measuring circuit for shading and registration errors in television cameras
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
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

Also Published As

Publication number Publication date
DE69125139T2 (de) 1997-09-25
EP0501075A2 (de) 1992-09-02
EP0501075A3 (en) 1993-06-30
EP0501075B1 (de) 1997-03-12
US5157497A (en) 1992-10-20
JPH04330872A (ja) 1992-11-18

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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