FR2854719A1 - Procede de traitement d'image visant a ameliorer le contraste dans un panneau d'affichage numerique - Google Patents

Procede de traitement d'image visant a ameliorer le contraste dans un panneau d'affichage numerique

Info

Publication number
FR2854719A1
FR2854719A1 FR0305669A FR0305669A FR2854719A1 FR 2854719 A1 FR2854719 A1 FR 2854719A1 FR 0305669 A FR0305669 A FR 0305669A FR 0305669 A FR0305669 A FR 0305669A FR 2854719 A1 FR2854719 A1 FR 2854719A1
Authority
FR
France
Prior art keywords
image
gray level
compression
maximum gray
video signal
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.)
Pending
Application number
FR0305669A
Other languages
English (en)
Inventor
Thierry Borel
Didier Doyen
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.)
Thomson Licensing SAS
Original Assignee
Thomson Licensing SAS
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 Thomson Licensing SAS filed Critical Thomson Licensing SAS
Priority to FR0305669A priority Critical patent/FR2854719A1/fr
Priority to EP04101853A priority patent/EP1475772B1/fr
Priority to CNB2004100477464A priority patent/CN100384236C/zh
Priority to US10/840,184 priority patent/US7528849B2/en
Priority to JP2004137780A priority patent/JP4949612B2/ja
Priority to KR1020040031869A priority patent/KR101029131B1/ko
Priority to TW093112707A priority patent/TW200503527A/zh
Publication of FR2854719A1 publication Critical patent/FR2854719A1/fr
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/24—Hoses or pipes; Hose or pipe couplings
    • A47L9/248—Parts, details or accessories of hoses or pipes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/0646—Modulation of illumination source brightness and image signal correlated to each other
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/066—Adjustment of display parameters for control of contrast
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
    • G09G2340/0428—Gradation resolution change
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Liquid Crystal (AREA)
  • Image Processing (AREA)
  • Television Receiver Circuits (AREA)

Abstract

L'invention concerne un procédé de traitement d'une image affichée par un dispositif d'affichage comportant au moins une source d'illumination et une valve optique. Il comporte les étapes suivantes :- appliquer un facteur de compression C aux niveaux de gris du signal vidéo de l'image supérieurs à une valeur seuil NG1, ladite valeur seuil étant inférieure à la valeur maximale de niveau de gris (NGmax) du signal vidéo de l'image,- régler la luminance de la lumière produite par la source d'illumination à la valeur de luminance correspondant au niveau de gris maximal (NG'max) de l'image après compression,- multiplier le signal vidéo fourni à la valve optique par un facteur de dilation D égal au rapport du niveau de gris maximal de l'image avant compression (NGmax) sur le niveau de gris maximal de l'image après compression (NG'max).
FR0305669A 2003-05-07 2003-05-07 Procede de traitement d'image visant a ameliorer le contraste dans un panneau d'affichage numerique Pending FR2854719A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FR0305669A FR2854719A1 (fr) 2003-05-07 2003-05-07 Procede de traitement d'image visant a ameliorer le contraste dans un panneau d'affichage numerique
EP04101853A EP1475772B1 (fr) 2003-05-07 2004-04-29 Procédé permettant d'ameliorer le contraste d'un panneau d'affichage numérique
CNB2004100477464A CN100384236C (zh) 2003-05-07 2004-04-30 提高数字显示板对比度的图像处理方法
US10/840,184 US7528849B2 (en) 2003-05-07 2004-05-06 Image processing method for improving the contrast in a digital display panel
JP2004137780A JP4949612B2 (ja) 2003-05-07 2004-05-06 デジタル表示パネルにおけるコントラストを向上させるための画像処理方法
KR1020040031869A KR101029131B1 (ko) 2003-05-07 2004-05-06 디지털 디스플레이 패널에서의 콘트래스트를 개선하는 영상 처리 방법
TW093112707A TW200503527A (en) 2003-05-07 2004-05-06 Image processing method for improving the contrast in a digital display panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0305669A FR2854719A1 (fr) 2003-05-07 2003-05-07 Procede de traitement d'image visant a ameliorer le contraste dans un panneau d'affichage numerique

Publications (1)

Publication Number Publication Date
FR2854719A1 true FR2854719A1 (fr) 2004-11-12

Family

ID=32982396

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0305669A Pending FR2854719A1 (fr) 2003-05-07 2003-05-07 Procede de traitement d'image visant a ameliorer le contraste dans un panneau d'affichage numerique

Country Status (7)

Country Link
US (1) US7528849B2 (fr)
EP (1) EP1475772B1 (fr)
JP (1) JP4949612B2 (fr)
KR (1) KR101029131B1 (fr)
CN (1) CN100384236C (fr)
FR (1) FR2854719A1 (fr)
TW (1) TW200503527A (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI239213B (en) * 2004-06-04 2005-09-01 Prodisc Technology Inc Display device
TWI238003B (en) * 2004-06-04 2005-08-11 Prodisc Technology Inc Image processing method for display device
TWI245966B (en) * 2004-07-05 2005-12-21 Prodisc Technology Inc Display device and image processing method therefor
TWI286034B (en) * 2004-07-05 2007-08-21 Prodisc Technology Inc Display device and image processing method therefor
JP4687515B2 (ja) * 2006-03-13 2011-05-25 セイコーエプソン株式会社 動画像表示装置および動画像表示方法
KR101216176B1 (ko) * 2006-06-30 2012-12-28 엘지디스플레이 주식회사 유기발광다이오드 표시장치 및 그의 구동방법
JP2008039801A (ja) * 2006-08-01 2008-02-21 M & S Fine Tec Kk 液晶表示装置および液晶表示装置用バックライト制御システムならびに液晶表示装置用バックライトの制御方法
EP2096623A1 (fr) * 2008-02-29 2009-09-02 Research In Motion Limited Système et procédé pour régler le niveau de rétroéclairage de l'affichage dans un dispositif électronique
US8063873B2 (en) 2008-02-29 2011-11-22 Research In Motion Limited System and method for adjusting a backlight level for a display on an electronic device
US8238688B2 (en) * 2008-03-11 2012-08-07 National Taiwan University Method for enhancing perceptibility of an image using luminance characteristics
CN104575391B (zh) * 2015-01-30 2017-10-10 青岛海信电器股份有限公司 一种显示信号处理方法及装置、自发光类显示器
JP6759813B2 (ja) * 2016-07-29 2020-09-23 株式会社Ｊｖｃケンウッド 処理装置、表示システム、表示方法、及びプログラム

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0566501A (ja) * 1991-09-09 1993-03-19 Toshiba Corp 投射型液晶表示装置
JPH09244548A (ja) * 1996-03-05 1997-09-19 Canon Inc 表示装置
EP1014330A2 (fr) * 1998-12-24 2000-06-28 Fujitsu Limited Commande du domaine dynamique d'un dispositif affichage
EP1111578A1 (fr) * 1999-05-10 2001-06-27 Matsushita Electric Industrial Co., Ltd. Dispositif et procede d'affichage d'image
WO2002003687A2 (fr) * 2000-07-03 2002-01-10 Imax Corporation Materiel et techniques destines a accroitre la gamme dynamique d'un systeme de projection

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01239589A (ja) * 1988-03-22 1989-09-25 Toshiba Corp 画像表示装置
JPH06102484A (ja) * 1992-09-18 1994-04-15 Matsushita Electric Ind Co Ltd 空間光変調素子を用いた映像表示方法及び映像表示装置
JPH06332399A (ja) * 1993-05-19 1994-12-02 Fujitsu General Ltd 電子ディスプレイの制御方法およびその装置
JPH1165531A (ja) * 1997-08-20 1999-03-09 Fujitsu Ltd 画像表示装置および画像表示用ｌｓｉ
JPH11109317A (ja) * 1997-09-30 1999-04-23 Sony Corp 液晶表示装置
JP2000307896A (ja) * 1999-04-15 2000-11-02 Toshiba Corp 画像処理装置及び画像処理方法
JP3430998B2 (ja) * 1999-11-08 2003-07-28 松下電器産業株式会社 画像表示装置および画像表示方法
US7653814B2 (en) * 2001-12-11 2010-01-26 International Business Machines Corporation System and method for securely hyperlinking graphic objects

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0566501A (ja) * 1991-09-09 1993-03-19 Toshiba Corp 投射型液晶表示装置
JPH09244548A (ja) * 1996-03-05 1997-09-19 Canon Inc 表示装置
EP1014330A2 (fr) * 1998-12-24 2000-06-28 Fujitsu Limited Commande du domaine dynamique d'un dispositif affichage
EP1111578A1 (fr) * 1999-05-10 2001-06-27 Matsushita Electric Industrial Co., Ltd. Dispositif et procede d'affichage d'image
WO2002003687A2 (fr) * 2000-07-03 2002-01-10 Imax Corporation Materiel et techniques destines a accroitre la gamme dynamique d'un systeme de projection

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 387 (P - 1576) 20 July 1993 (1993-07-20) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 01 30 January 1998 (1998-01-30) *

Also Published As

Publication number Publication date
CN100384236C (zh) 2008-04-23
TW200503527A (en) 2005-01-16
CN1551623A (zh) 2004-12-01
JP4949612B2 (ja) 2012-06-13
EP1475772B1 (fr) 2011-07-06
JP2004334217A (ja) 2004-11-25
US7528849B2 (en) 2009-05-05
KR20040095685A (ko) 2004-11-15
KR101029131B1 (ko) 2011-04-13
EP1475772A1 (fr) 2004-11-10
US20050007391A1 (en) 2005-01-13

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