KR970032031A - 투사형 화상표시시스템의 비대칭화면 보정위치제어방법 - Google Patents

투사형 화상표시시스템의 비대칭화면 보정위치제어방법 Download PDF

Info

Publication number
KR970032031A
KR970032031A KR1019950040955A KR19950040955A KR970032031A KR 970032031 A KR970032031 A KR 970032031A KR 1019950040955 A KR1019950040955 A KR 1019950040955A KR 19950040955 A KR19950040955 A KR 19950040955A KR 970032031 A KR970032031 A KR 970032031A
Authority
KR
South Korea
Prior art keywords
correction
display system
image
image display
pixels
Prior art date
Application number
KR1019950040955A
Other languages
English (en)
Other versions
KR100188218B1 (ko
Inventor
우성재
Original Assignee
배순훈
대우전자 주식회사
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 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019950040955A priority Critical patent/KR100188218B1/ko
Priority to JP8314120A priority patent/JPH09191441A/ja
Priority to CN96121368A priority patent/CN1072879C/zh
Priority to DE69618545T priority patent/DE69618545T2/de
Priority to US08/747,088 priority patent/US5795046A/en
Priority to EP96308200A priority patent/EP0773678B1/en
Publication of KR970032031A publication Critical patent/KR970032031A/ko
Application granted granted Critical
Publication of KR100188218B1 publication Critical patent/KR100188218B1/ko

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/72—Modifying the appearance of television pictures by optical filters or diffusing screens
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3179—Video signal processing therefor
    • H04N9/3185—Geometric adjustment, e.g. keystone or convergence
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/22—Circuits for controlling dimensions, shape or centering of picture on screen
    • H04N3/23—Distortion correction, e.g. for pincushion distortion correction, S-correction
    • H04N3/233—Distortion correction, e.g. for pincushion distortion correction, S-correction using active elements
    • H04N3/2335—Distortion correction, e.g. for pincushion distortion correction, S-correction using active elements with calculating means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Projection Apparatus (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

본 발명은 투사형 화상표시시스템의 비대칭화면 보정제어방법에 관한 것으로, 화상처리수단에 의해 처리된 화상 신호를 투사각에 대응하는 화상으로 스크린상에 투사하는 투사형 화상표시시스템에 있어서, 상기 투사각을 유지하여 상기 스크린상에 투사되는 화상신호에 대해 주사라인마다 전체의 화소의 수로부터 선보정에 의해 누락되는 화소의 위치가 상호 다르게 설정되도록 매핑하여 보정처리를 수행하게 되고, 상기 선보정에 의해 누락되는 화소의 위치는 원 화상의 위치를 x, 보정후의 위치를 y로 설정한 경우,
y =ax + b (b는 블럭별 보정량 / 2)
a =(라인당 전체의 화소수-블럭별 보정량) / 전체의 화소수
로 정의되는 위치변환함수에 의해 결정되어 라인별 보정량에 따라 변화되도록 해서 원 화상에 대한 충실한 재현이 가능하도록 하는 것이다.

Description

투사형 화상표시시스템의 비대칭화면 보정위치제어방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 2 도는 본 발명에 따른 비대칭화면 보정제어방법이 적용된 투사형 화상표시시스템의 비대칭화면 보정장치를 나타낸 블록구성도.
제 3 도(a) 내지 (d)는 제 2도에 도시된 투사형 화상표시시스템의 비대칭화면 보정장치에 의해 실행되는 비대칭화면의 보정제어를 설명하기 위한 도면이다.

Claims (2)

  1. 화상처리수단에 의해 처리된 화상신호를 투사각에 대응하는 화상으로 스크린상에 투사하는 투사형 화상표시시스템에 있어서, 상기 투사각을 유지하여 상기 스크린상에 투사되는 화상신호에 대해 주사라인마다 전체의 화소의 수로부터 선보정에 의해 누락되는 화소가 등간격이 아닌 상호 다른 위치로 설정되도록 매핑하여 보정처리를 수행하도록 된 것을 특징으로 하는 투사형 화상표시시스템의 비대칭화면 보정위치제어방법.
  2. 제 1항에 있어서, 상기 선보정에 의해 누락되는 화소의 위치는 원 화상의 위치를 x, 보정후의 위치를 y로 설정한 경우,
    y =ax + b (b는 블럭별 보정량 / 2)
    a =(라인당 전체의 화소수-블럭별 보정량) / 라인당 전체의 화소수
    로 정의되는 위치변환함수에 의해 결정되어 라인별 보정량에 따라 변화되는 것을 특징으로 하는 투사형 화상표시시스템의 비대칭화면 보정위치제어방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950040955A 1995-11-13 1995-11-13 투사형 화상표시시스템의 비대칭화면 보정위치제어 방법 KR100188218B1 (ko)

Priority Applications (6)

Application Number Priority Date Filing Date Title
KR1019950040955A KR100188218B1 (ko) 1995-11-13 1995-11-13 투사형 화상표시시스템의 비대칭화면 보정위치제어 방법
JP8314120A JPH09191441A (ja) 1995-11-13 1996-11-12 投射型の画像表示システムでの非対称画像の先補償方法
CN96121368A CN1072879C (zh) 1995-11-13 1996-11-13 对显示图像的投影系统中非对称图像的预补偿方法
DE69618545T DE69618545T2 (de) 1995-11-13 1996-11-13 Verfahren zur Vorkompensierung eines asymmetrischen Bildes in einem Bildprojektionssystem
US08/747,088 US5795046A (en) 1995-11-13 1996-11-13 Method for pre-compensating an asymmetrical picture in a projection system for displaying a picture
EP96308200A EP0773678B1 (en) 1995-11-13 1996-11-13 Method for pre-compensating an asymmetrical picture in a projection system for displaying a picture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950040955A KR100188218B1 (ko) 1995-11-13 1995-11-13 투사형 화상표시시스템의 비대칭화면 보정위치제어 방법

Publications (2)

Publication Number Publication Date
KR970032031A true KR970032031A (ko) 1997-06-26
KR100188218B1 KR100188218B1 (ko) 1999-06-01

Family

ID=19433852

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950040955A KR100188218B1 (ko) 1995-11-13 1995-11-13 투사형 화상표시시스템의 비대칭화면 보정위치제어 방법

Country Status (6)

Country Link
US (1) US5795046A (ko)
EP (1) EP0773678B1 (ko)
JP (1) JPH09191441A (ko)
KR (1) KR100188218B1 (ko)
CN (1) CN1072879C (ko)
DE (1) DE69618545T2 (ko)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100827619B1 (ko) * 2006-10-11 2008-05-07 삼성전기주식회사 영상 왜곡 보정 방법 및 그 장치
KR101413192B1 (ko) * 2014-03-27 2014-06-27 와이지에프 주식회사 가죽라미네이팅장치

Families Citing this family (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19737374C2 (de) * 1997-08-27 1999-09-02 Ldt Gmbh & Co Verfahren zur Kompensation geometrischer Bildfehler bei Videobildern sowie ein Projektor zur Durchführung des Verfahrens
JP4089051B2 (ja) * 1998-02-18 2008-05-21 セイコーエプソン株式会社 画像処理装置および画像処理方法
CN100394787C (zh) * 1998-02-18 2008-06-11 精工爱普生株式会社 图象处理装置和图象处理方法
TW385127U (en) * 1998-06-01 2000-03-11 Mustek Systems Inc Digital keystone rectified correction circuit
US6141530A (en) * 1998-06-15 2000-10-31 Digital Electronic Cinema, Inc. System and method for digital electronic cinema delivery
EP1118210A4 (en) * 1998-10-02 2006-08-23 Macronix Int Co Ltd METHOD AND APPARATUS FOR PREVENTING TRAPEZE DISTORTION
US6191827B1 (en) * 1998-12-01 2001-02-20 Oplus Technologies Ltd. Electronic keystone correction for electronic devices with a visual display
US6305805B1 (en) * 1998-12-17 2001-10-23 Gateway, Inc. System, method and software for correcting keystoning of a projected image
US6179426B1 (en) 1999-03-03 2001-01-30 3M Innovative Properties Company Integrated front projection system
US6568814B2 (en) 1999-03-03 2003-05-27 3M Innovative Properties Company Integrated front projection system with shaped imager and associated method
US6530664B2 (en) 1999-03-03 2003-03-11 3M Innovative Properties Company Integrated front projection system with enhanced dry erase screen configuration
US6520646B2 (en) 1999-03-03 2003-02-18 3M Innovative Properties Company Integrated front projection system with distortion correction and associated method
TW472491B (en) * 1999-03-19 2002-01-11 Seiko Epson Corp Projection system and projector
JP3509652B2 (ja) * 1999-08-23 2004-03-22 日本電気株式会社 プロジェクタ装置
US6753907B1 (en) 1999-12-23 2004-06-22 Justsystem Corporation Method and apparatus for automatic keystone correction
US6511185B1 (en) * 2000-05-03 2003-01-28 Ati International Srl Method and apparatus for compensating a projected image
KR20020000940A (ko) * 2000-06-22 2002-01-09 구자홍 키스톤 보정 장치 및 방법
US6520647B2 (en) 2000-08-17 2003-02-18 Mitsubishi Electric Research Laboratories Inc. Automatic keystone correction for projectors with arbitrary orientation
US6491400B1 (en) 2000-10-24 2002-12-10 Eastman Kodak Company Correcting for keystone distortion in a digital image displayed by a digital projector
EP1352286B1 (en) * 2000-11-03 2011-05-04 Microvision, Inc. Scanned display with variation compensation
US6481855B2 (en) 2001-01-12 2002-11-19 Infocus Corporation Keystone distortion correction system for use in multimedia projectors
DE20109394U1 (de) 2001-06-06 2001-08-16 Zeiss Carl Jena Gmbh Projektionsanordnung
WO2003107090A1 (en) * 2002-06-12 2003-12-24 Silicon Optix, Inc. Automatic keystone correction system and method
US7714943B2 (en) * 2002-06-12 2010-05-11 Geo Semiconductor Inc. Ultra-thin image projection system
US20070165192A1 (en) * 2006-01-13 2007-07-19 Silicon Optix Inc. Reduced field angle projection display system
TWI231886B (en) 2003-01-08 2005-05-01 Silicon Optix Inc Image projection system and method
CN100403157C (zh) * 2003-07-17 2008-07-16 三洋电机株式会社 投影型图像显示器和该显示器的出厂时的调整方法
US7175285B2 (en) * 2003-07-29 2007-02-13 Sharp Laboratories Of America, Inc. Projection system that adjusts for keystoning
US7001023B2 (en) 2003-08-06 2006-02-21 Mitsubishi Electric Research Laboratories, Inc. Method and system for calibrating projectors to arbitrarily shaped surfaces with discrete optical sensors mounted at the surfaces
JP4037816B2 (ja) 2003-10-06 2008-01-23 Ｎｅｃディスプレイソリューションズ株式会社 プロジェクタおよびプロジェクタによる画面の投射方法
US7125122B2 (en) * 2004-02-02 2006-10-24 Sharp Laboratories Of America, Inc. Projection system with corrective image transformation
US7144115B2 (en) * 2004-04-14 2006-12-05 Sharp Laboratories Of America, Inc. Projection system
US7407297B2 (en) * 2004-08-18 2008-08-05 Klip Collective, Inc. Image projection system and method
US8066384B2 (en) * 2004-08-18 2011-11-29 Klip Collective, Inc. Image projection kit and method and system of distributing image content for use with the same
US7399086B2 (en) * 2004-09-09 2008-07-15 Jan Huewel Image processing method and image processing device
US7241016B2 (en) * 2004-10-22 2007-07-10 Hewlett-Packard Development Company, L.P. Projector alignment method and user interface
DE602004024895D1 (de) 2004-10-25 2010-02-11 Barco Nv Optische Korrektur für Leuchtpaneele mit hoher Gleichmäßigkeit
DE102004056760A1 (de) * 2004-11-24 2006-06-08 Benq Mobile Gmbh & Co. Ohg Trapezentzerrung bei Laserprojektionssystemen
US7359575B2 (en) * 2004-12-07 2008-04-15 Silicon Optix Inc. Dynamic warp map generation system and method
US7252387B2 (en) * 2005-03-21 2007-08-07 Mitsubishi Electric Research Laboratories, Inc. System and method for mechanically adjusting projector pose with six degrees of freedom for image alignment
US7441906B1 (en) 2005-07-05 2008-10-28 Pixelworks, Inc. Keystone correction system and method
US20070024823A1 (en) * 2005-07-29 2007-02-01 Optoma Technology, Inc. Methods and systems for improving operation of a video projector
US8089567B2 (en) 2005-07-29 2012-01-03 Optoma Technology, Inc. Methods and systems for displaying video on an adjustable screen
US7357514B2 (en) * 2005-07-29 2008-04-15 Optoma Technology, Inc. Methods and systems for improving operation of a video projector
US20070025273A1 (en) * 2005-07-29 2007-02-01 Chung Yau W Methods and systems for detecting video signals and sources
US7434937B2 (en) 2005-07-29 2008-10-14 Optoma Technology, Inc. Methods and systems for calibrating rear projection video
US20070024764A1 (en) * 2005-07-29 2007-02-01 Optoma Technology, Inc. Methods and systems that compensate for distortion introduced by anamorphic lenses in a video projector
US7701518B2 (en) * 2005-07-29 2010-04-20 Optoma Technology, Inc. Methods and systems for displaying video in multiple aspect ratios
US20070182936A1 (en) * 2006-02-08 2007-08-09 Canon Kabushiki Kaisha Projection display apparatus
JP2008148055A (ja) * 2006-12-11 2008-06-26 Sony Corp 画像処理装置、画像処理方法、表示装置、および投射型表示装置
JP2011205524A (ja) * 2010-03-26 2011-10-13 Seiko Epson Corp プロジェクター装置およびプロジェクター装置の投写方法
KR102281834B1 (ko) * 2020-07-24 2021-07-26 주식회사 레티널 증강 현실용 화상의 영상 보정 장치
CN112738491B (zh) * 2020-12-29 2022-12-02 视田科技（天津）有限公司 一种投影反射画面的校正方法
DE102021104346A1 (de) 2021-02-24 2022-08-25 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zu einem Kompensieren von Projektionsfehlern bei einer Ausgabe von Bildern, System mit einer Recheneinheit zu einer Ausführung des Verfahrens und Computerprogramm

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5642225A (en) * 1979-09-14 1981-04-20 Fuji Xerox Co Ltd Original for oblique projection and its making device
JP2670102B2 (ja) * 1988-09-13 1997-10-29 パイオニア株式会社 プロジェクションｔｖにおけるビデオ信号処理回路
JPH0380683A (ja) * 1989-08-23 1991-04-05 Victor Co Of Japan Ltd 液晶ライトバルブを用いた画像投影機の台形歪補正回路
US5283602A (en) 1990-12-29 1994-02-01 Goldstar Co., Ltd. Optical system for projector
JP2925777B2 (ja) * 1991-04-23 1999-07-28 三洋電機株式会社 液晶プロジェクタの歪み補正回路
JPH04355740A (ja) * 1991-06-03 1992-12-09 Hitachi Ltd プロジェクタ
JPH0514844A (ja) * 1991-07-05 1993-01-22 Matsushita Electric Ind Co Ltd 液晶パネル駆動制御回路
US5414521A (en) * 1991-09-12 1995-05-09 Ansley; David A. Dynamic distortion correction apparatus and method
GB2265064B (en) * 1992-02-26 1995-08-23 Rank Cintel Ltd Projection systems
US5355188A (en) 1993-09-09 1994-10-11 In Focus Systems, Inc. Method and apparatus for distortion correction in optical projectors
JPH07181923A (ja) * 1993-12-22 1995-07-21 Matsushita Electric Ind Co Ltd 液晶プロジェクタ
US5557353A (en) * 1994-04-22 1996-09-17 Stahl; Thomas D. Pixel compensated electro-optical display system
JP2613565B2 (ja) * 1994-09-12 1997-05-28 日米ゴム株式会社 弾性を有する柱状構造物
US5548357A (en) * 1995-06-06 1996-08-20 Xerox Corporation Keystoning and focus correction for an overhead projector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100827619B1 (ko) * 2006-10-11 2008-05-07 삼성전기주식회사 영상 왜곡 보정 방법 및 그 장치
KR101413192B1 (ko) * 2014-03-27 2014-06-27 와이지에프 주식회사 가죽라미네이팅장치

Also Published As

Publication number Publication date
DE69618545D1 (de) 2002-02-21
DE69618545T2 (de) 2002-08-29
CN1158536A (zh) 1997-09-03
EP0773678A2 (en) 1997-05-14
CN1072879C (zh) 2001-10-10
EP0773678B1 (en) 2002-01-16
US5795046A (en) 1998-08-18
JPH09191441A (ja) 1997-07-22
KR100188218B1 (ko) 1999-06-01
EP0773678A3 (en) 1998-03-04

Similar Documents

Publication Publication Date Title
KR970032031A (ko) 투사형 화상표시시스템의 비대칭화면 보정위치제어방법
KR0173704B1 (ko) 투사형 화상표시시스템의 비대칭화면 보정장치
EP1018705A3 (en) Magnifying digital image using edge mapping
JPH077617A (ja) 色値処理方法および処理装置
JPS5880970A (ja) コントラスト増大改良方法
KR100195318B1 (ko) 광전변환소자의 셰이딩보정회로
GB2252481A (en) Image transforming apparatus
KR940009489B1 (ko) 수평 블랭킹 폭 보정장치 및 그 방법
JPH03663B2 (ko)
JP3269389B2 (ja) 表示装置
JPH02272878A (ja) 原稿読取装置
JPH077618A (ja) 色値処理方法および装置
JPH02252563A (ja) 画像記録装置
KR970032038A (ko) 투사형 화상표시시스템의 비대칭화면 보정제어방법
KR970032201A (ko) 투사형 화상표시시스템의 비대칭화면 보정제어방법
JPH0649012Y2 (ja) 画信号修正装置
JPS62291851A (ja) 走査型電子顕微鏡画像の走査振動除去方式
JP2003174568A5 (ko)
JPS6384373A (ja) 画像修正装置
JPH04265070A (ja) 画像読取装置の白レベル補正方法
JPH04105462A (ja) 画像読み取り装置
JPH05143055A (ja) 画像加工処理方法
JPH01103364A (ja) 画像処理装置
JPH08336050A (ja) 画像処理装置
EP1162832A3 (en) Method and apparatus for correcting non-uniformity in scanned digital images

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20031230

Year of fee payment: 6

LAPS Lapse due to unpaid annual fee