EP2372686A1 - Procédé pour accélération locale de l'atténuation au moyen de propriétés saillantes - Google Patents

Procédé pour accélération locale de l'atténuation au moyen de propriétés saillantes Download PDF

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Publication number
EP2372686A1
EP2372686A1 EP11156618A EP11156618A EP2372686A1 EP 2372686 A1 EP2372686 A1 EP 2372686A1 EP 11156618 A EP11156618 A EP 11156618A EP 11156618 A EP11156618 A EP 11156618A EP 2372686 A1 EP2372686 A1 EP 2372686A1
Authority
EP
European Patent Office
Prior art keywords
saliency
image
saliency map
histogram
intensity
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.)
Granted
Application number
EP11156618A
Other languages
German (de)
English (en)
Other versions
EP2372686B1 (fr
Inventor
Emrah Tasli
Cevahir Cigla
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.)
Vestel Elektronik Sanayi ve Ticaret AS
Original Assignee
Vestel Elektronik Sanayi ve Ticaret AS
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Publication date
Application filed by Vestel Elektronik Sanayi ve Ticaret AS filed Critical Vestel Elektronik Sanayi ve Ticaret AS
Publication of EP2372686A1 publication Critical patent/EP2372686A1/fr
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Publication of EP2372686B1 publication Critical patent/EP2372686B1/fr
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Anticipated expiration legal-status Critical

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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
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix
    • 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
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • 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
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/0653—Controlling or limiting the speed of brightness adjustment of the illumination source
    • 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

Definitions

  • the utility model document CN 201315148 offers a similar method to the utility model document CN 201315147 .
  • CN 201315148 offers a solution for locally controllable LED backlights in which, maximum of local gray value and its density is used to control the LED backlight. This method is better than CN 201315147 in terms of locality issues but still the information used for processing is inadequate.
  • Another object of the invention is to decrease power consumption while delivering a more perceptible image.
  • the reference numbers as used in figures may possess the following meanings.
  • the background region of the image which has a gray level of 120 (1) The region of the image which has a gray level of 200 (2) The region of the image which has a gray level of 50 (3) The region of the image which has a gray level of 100 (4) The background region of saliency map which has a gray level of 10 (5) The region of saliency map which has a gray level of 200 (6) The region of saliency map which has a gray level of 190 (7) The region of saliency map which has a gray level of 20 (8) The center points of 4 neighboring regions of LCD (9, 10, 11, 12) Saliency calculation point (13)
  • Saliency is widely used in computer vision area and has applications such as coding, watermarking, feature matching, video abstraction and summarization.
  • Various methods are proposed to extract salient features of an image or a video.
  • Image enhancement based on saliency is used in computer graphics and biomedical engineering.
  • computational complexity is decreased by processing the graphic such that, salient regions are processed in detail whereas regions with less saliency are processed with less detail.
  • Biomedical engineering uses salient features to process an image to attract user attention to specific regions of the image.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Image Processing (AREA)
EP20110156618 2010-03-09 2011-03-02 Procédé pour compenser l'atténuation locale d'un backlight Active EP2372686B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR2010/01776A TR201001776A2 (tr) 2010-03-09 2010-03-09 Belirgin öznitelikler kullanılarak bölgesel ışik kontrolü yöntemi.

Publications (2)

Publication Number Publication Date
EP2372686A1 true EP2372686A1 (fr) 2011-10-05
EP2372686B1 EP2372686B1 (fr) 2014-10-08

Family

ID=43881079

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20110156618 Active EP2372686B1 (fr) 2010-03-09 2011-03-02 Procédé pour compenser l'atténuation locale d'un backlight

Country Status (3)

Country Link
EP (1) EP2372686B1 (fr)
ES (1) ES2527212T3 (fr)
TR (1) TR201001776A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105489191A (zh) * 2014-09-18 2016-04-13 北京三星通信技术研究有限公司 一种显示设备及其显示方法
CN113326016A (zh) * 2021-08-04 2021-08-31 卡莱特云科技股份有限公司 一种led显示屏对比度提升方法、装置及计算机设备
CN114078460A (zh) * 2020-08-20 2022-02-22 瑞鼎科技股份有限公司 非等差的脉宽调变调光方法
WO2023039753A1 (fr) * 2021-09-15 2023-03-23 华为技术有限公司 Procédé et appareil de commande d'affichage à rétroéclairage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101354875A (zh) 2008-09-16 2009-01-28 彩虹集团公司 一种液晶用led背光驱动方法
US20090079768A1 (en) * 2007-09-26 2009-03-26 Himax Technologies Limited Method of controlling backlight module, backlight controller and display device using the same
CN201315147Y (zh) 2008-11-18 2009-09-23 康佳集团股份有限公司 一种用于液晶电视的led背光源动态控制装置
CN201315148Y (zh) 2008-11-14 2009-09-23 康佳集团股份有限公司 用于液晶电视的led背光源区域发光控制装置
WO2009157224A1 (fr) * 2008-06-27 2009-12-30 シャープ株式会社 Dispositif de commande d’un dispositif d’affichage à cristaux liquides, dispositif d’affichage à cristaux liquides, procédé permettant de commander le dispositif d’affichage à cristaux liquides, programme et support d’enregistrement

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090079768A1 (en) * 2007-09-26 2009-03-26 Himax Technologies Limited Method of controlling backlight module, backlight controller and display device using the same
WO2009157224A1 (fr) * 2008-06-27 2009-12-30 シャープ株式会社 Dispositif de commande d’un dispositif d’affichage à cristaux liquides, dispositif d’affichage à cristaux liquides, procédé permettant de commander le dispositif d’affichage à cristaux liquides, programme et support d’enregistrement
EP2290435A1 (fr) * 2008-06-27 2011-03-02 Sharp Kabushiki Kaisha Dispositif de commande d un dispositif d affichage à cristaux liquides, dispositif d affichage à cristaux liquides, procédé permettant de commander le dispositif d affichage à cristaux liquides, programme et support d enregistrement
CN101354875A (zh) 2008-09-16 2009-01-28 彩虹集团公司 一种液晶用led背光驱动方法
CN201315148Y (zh) 2008-11-14 2009-09-23 康佳集团股份有限公司 用于液晶电视的led背光源区域发光控制装置
CN201315147Y (zh) 2008-11-18 2009-09-23 康佳集团股份有限公司 一种用于液晶电视的led背光源动态控制装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ALI SHARIQ IMRAN ET AL: "A visual attention based reference free perceptual quality metric", VISUAL INFORMATION PROCESSING (EUVIP), 2010 2ND EUROPEAN WORKSHOP ON, IEEE, PISCATAWAY, NJ, USA, 5 July 2010 (2010-07-05), pages 55 - 60, XP031858404, ISBN: 978-1-4244-7288-8 *
ROSIN ET AL: "A simple method for detecting salient regions", PATTERN RECOGNITION, ELSEVIER, GB, vol. 42, no. 11, 1 November 2009 (2009-11-01), pages 2363 - 2371, XP026250835, ISSN: 0031-3203, [retrieved on 20090509], DOI: 10.1016/J.PATCOG.2009.04.021 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105489191A (zh) * 2014-09-18 2016-04-13 北京三星通信技术研究有限公司 一种显示设备及其显示方法
EP3196867A4 (fr) * 2014-09-18 2017-10-04 Samsung Electronics Co., Ltd. Dispositif et procédé d'affichage de contenu
CN114078460A (zh) * 2020-08-20 2022-02-22 瑞鼎科技股份有限公司 非等差的脉宽调变调光方法
CN114078460B (zh) * 2020-08-20 2023-07-04 瑞鼎科技股份有限公司 非等差的脉宽调变调光方法
CN113326016A (zh) * 2021-08-04 2021-08-31 卡莱特云科技股份有限公司 一种led显示屏对比度提升方法、装置及计算机设备
WO2023039753A1 (fr) * 2021-09-15 2023-03-23 华为技术有限公司 Procédé et appareil de commande d'affichage à rétroéclairage

Also Published As

Publication number Publication date
ES2527212T3 (es) 2015-01-21
TR201001776A2 (tr) 2011-09-21
EP2372686B1 (fr) 2014-10-08

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