BR9806194A - Processo para compensação de defeitos geométricos em imagens de vìdeo, e dispositivo para representação de imagens de vìdeo sobre uma superfìcie de projeção - Google Patents

Processo para compensação de defeitos geométricos em imagens de vìdeo, e dispositivo para representação de imagens de vìdeo sobre uma superfìcie de projeção

Info

Publication number
BR9806194A
BR9806194A BR9806194-1A BR9806194A BR9806194A BR 9806194 A BR9806194 A BR 9806194A BR 9806194 A BR9806194 A BR 9806194A BR 9806194 A BR9806194 A BR 9806194A
Authority
BR
Brazil
Prior art keywords
video images
projection surface
compensating
geometric defects
representing
Prior art date
Application number
BR9806194-1A
Other languages
English (en)
Inventor
Klaus Hiller
Wolfgang Vogel
Christhard Deter
Original Assignee
Ldt Gmbh & Co
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 Ldt Gmbh & Co filed Critical Ldt Gmbh & Co
Publication of BR9806194A publication Critical patent/BR9806194A/pt

Links

Classifications

    • 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
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • 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]
    • H04N9/3129—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] scanning a light beam on the display screen

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Geometry (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Projection Apparatus (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

''PROCESSO PARA COMPENSAçãO DE DEFEITOS GEOMéTRICOS EM IMAGENS DE VìDEO, E DISPOSITIVO PARA REPRESENTAçãO DE IMAGENS DE VìDEO SOBRE UMA SUPERFìCIE DE PROJEçãO''. Um dispositivo para representação de imagens de vídeo sobre uma superfície de projeção (101) sob posição oblíqua, abrangendo uma fonte de intensidade modulável (10) para emissão de um feixe de luz essencialmente paralelo para uma iluminação seq³encial de pixels da imagem de vídeo, uma unidade defletora (11, 12) para varredura do feixe de luz conforme linhas e imagens, e uma unidade de controle (17), a qual comanda tanto a modulação da intensidade para o feixe de luz, como também a respectiva deflexão (11, 12) conforme uma função, esta última obtida através de uma equalização calculada da imagem, pelo menos com referência à posição oblíqua. (Fig. 1).
BR9806194-1A 1997-08-27 1998-08-25 Processo para compensação de defeitos geométricos em imagens de vìdeo, e dispositivo para representação de imagens de vìdeo sobre uma superfìcie de projeção BR9806194A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19737374A DE19737374C2 (de) 1997-08-27 1997-08-27 Verfahren zur Kompensation geometrischer Bildfehler bei Videobildern sowie ein Projektor zur Durchführung des Verfahrens
PCT/EP1998/005403 WO1999011062A1 (de) 1997-08-27 1998-08-25 Verfahren zur kompensation geometrischer bildfehler bei videobildern sowie eine vorrichtung zur durchführung des verfahrens

Publications (1)

Publication Number Publication Date
BR9806194A true BR9806194A (pt) 1999-11-16

Family

ID=7840365

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9806194-1A BR9806194A (pt) 1997-08-27 1998-08-25 Processo para compensação de defeitos geométricos em imagens de vìdeo, e dispositivo para representação de imagens de vìdeo sobre uma superfìcie de projeção

Country Status (12)

Country Link
US (1) US6590606B1 (pt)
EP (1) EP0934653A1 (pt)
JP (1) JP3681408B2 (pt)
KR (1) KR100327311B1 (pt)
CN (1) CN1242906A (pt)
AU (1) AU739196B2 (pt)
BR (1) BR9806194A (pt)
CA (1) CA2267786A1 (pt)
DE (1) DE19737374C2 (pt)
IL (1) IL129200A0 (pt)
WO (1) WO1999011062A1 (pt)
ZA (1) ZA987765B (pt)

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CN106461380B (zh) * 2016-08-31 2019-04-05 深圳大学 一种基于自适应条纹的投影仪镜头畸变校正方法及其系统
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CN109598718B (zh) * 2018-12-06 2020-12-04 安徽省华腾农业科技有限公司经开区分公司 设备更换需求分析机构
CN113747129B (zh) * 2020-05-28 2024-08-23 成都理想境界科技有限公司 一种延时矫正方法及扫描显示装置
KR20220064045A (ko) 2020-11-11 2022-05-18 삼성전자주식회사 영상을 생성하는 방법 및 장치와 영상 생성을 위한 신경망을 트레이닝하는 방법
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
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Also Published As

Publication number Publication date
DE19737374A1 (de) 1999-03-04
JP3681408B2 (ja) 2005-08-10
US6590606B1 (en) 2003-07-08
IL129200A0 (en) 2000-02-17
CN1242906A (zh) 2000-01-26
EP0934653A1 (de) 1999-08-11
KR20000068773A (ko) 2000-11-25
CA2267786A1 (en) 1999-03-04
AU9346998A (en) 1999-03-16
WO1999011062A1 (de) 1999-03-04
KR100327311B1 (ko) 2002-03-06
ZA987765B (en) 1999-03-01
DE19737374C2 (de) 1999-09-02
AU739196B2 (en) 2001-10-04
JP2000509522A (ja) 2000-07-25

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 6A,7A E 8A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1886 DE 27/02/2007.