DE69916526D1 - Verfahren und Vorrichtung zur dynamischen Kontrastverbesserung in Videobildern - Google Patents

Verfahren und Vorrichtung zur dynamischen Kontrastverbesserung in Videobildern

Info

Publication number
DE69916526D1
DE69916526D1 DE69916526T DE69916526T DE69916526D1 DE 69916526 D1 DE69916526 D1 DE 69916526D1 DE 69916526 T DE69916526 T DE 69916526T DE 69916526 T DE69916526 T DE 69916526T DE 69916526 D1 DE69916526 D1 DE 69916526D1
Authority
DE
Germany
Prior art keywords
video images
contrast enhancement
dynamic contrast
dynamic
enhancement
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 - Lifetime
Application number
DE69916526T
Other languages
English (en)
Other versions
DE69916526T2 (de
Inventor
Sahmusa Akbayir
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.)
Deutsche Thomson Brandt GmbH
Original Assignee
Deutsche Thomson Brandt GmbH
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 Deutsche Thomson Brandt GmbH filed Critical Deutsche Thomson Brandt GmbH
Publication of DE69916526D1 publication Critical patent/DE69916526D1/de
Application granted granted Critical
Publication of DE69916526T2 publication Critical patent/DE69916526T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57—Control of contrast or brightness

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Processing Of Color Television Signals (AREA)
  • Television Receiver Circuits (AREA)
  • Image Processing (AREA)
DE69916526T 1998-06-02 1999-05-21 Verfahren und Vorrichtung zur dynamischen Kontrastverbesserung in Videobildern Expired - Lifetime DE69916526T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP98109976 1998-06-02
EP98109976A EP0963111A1 (de) 1998-06-02 1998-06-02 Verfahren und Vorrichtung zur dynamischen Kontrastverbesserung in Videobildern

Publications (2)

Publication Number Publication Date
DE69916526D1 true DE69916526D1 (de) 2004-05-27
DE69916526T2 DE69916526T2 (de) 2004-09-23

Family

ID=8232044

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69916526T Expired - Lifetime DE69916526T2 (de) 1998-06-02 1999-05-21 Verfahren und Vorrichtung zur dynamischen Kontrastverbesserung in Videobildern
DE69934439T Expired - Lifetime DE69934439T2 (de) 1998-06-02 1999-05-21 Verfahren und Vorrichtung zur dynamischen Kontrastverbesserung in Videobildern

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69934439T Expired - Lifetime DE69934439T2 (de) 1998-06-02 1999-05-21 Verfahren und Vorrichtung zur dynamischen Kontrastverbesserung in Videobildern

Country Status (5)

Country Link
US (1) US6285413B1 (de)
EP (1) EP0963111A1 (de)
JP (1) JP4562825B2 (de)
CN (2) CN1137574C (de)
DE (2) DE69916526T2 (de)

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US7106352B2 (en) * 2003-03-03 2006-09-12 Sun Microsystems, Inc. Automatic gain control, brightness compression, and super-intensity samples
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JP4387220B2 (ja) * 2004-02-24 2009-12-16 株式会社日立製作所 映像表示方法及びその装置
US8050512B2 (en) * 2004-11-16 2011-11-01 Sharp Laboratories Of America, Inc. High dynamic range images from low dynamic range images
US7715645B2 (en) * 2004-11-17 2010-05-11 Samsung Electronics Co., Ltd. Methods to estimate noise variance from a video sequence
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EP1969832A2 (de) 2005-09-30 2008-09-17 Nxp B.V. Dynamisches soft-clipping von videoebenen
KR20070079224A (ko) * 2006-02-01 2007-08-06 삼성전자주식회사 코어링 장치 및 이를 이용하는 휘도 처리 프로세서와 그방법
CN100479494C (zh) * 2006-03-08 2009-04-15 深圳Tcl新技术有限公司 一种用于图像画质的调整方法
KR100763239B1 (ko) * 2006-06-27 2007-10-04 삼성전자주식회사 디스플레이되는 영상의 시인성 향상을 위한 영상 처리 장치및 방법
US20080122857A1 (en) * 2006-11-29 2008-05-29 Chih-Lin Hsuan Methods and devices for adjusting display characteristic of a video frame according to luminance statistics
EP2158754A1 (de) * 2008-01-18 2010-03-03 Fotonation Vision Limited Bildverarbeitungsverfahren und -vorrichtung
CN101599171A (zh) * 2008-06-03 2009-12-09 宝利微电子系统控股公司 自动对比度增强方法和装置
CN101340510B (zh) * 2008-08-07 2010-06-23 中兴通讯股份有限公司 一种视频增强的方法及其装置
CN101340512B (zh) * 2008-08-12 2010-06-09 中兴通讯股份有限公司 一种视频图像处理方法
CN101578855B (zh) * 2008-08-28 2015-07-29 香港应用科技研究院有限公司 数字图像增强
US8264499B1 (en) 2009-06-02 2012-09-11 Sprint Communications Company L.P. Enhancing viewability of information presented on a mobile device
US8781248B2 (en) * 2010-01-28 2014-07-15 Stmicroelectronics Asia Pacific Pte. Ltd. Image details preservation and enhancement
KR101937249B1 (ko) * 2012-10-09 2019-04-11 에스케이 텔레콤주식회사 열상카메라의 영상 잡음 레벨에 기반한 대조비 향상 기법 및 장치
TWI472989B (zh) * 2012-12-04 2015-02-11 Pixart Imaging Inc 影像調整方法以及使用此影像調整方法的光學導航裝置
CN103096087B (zh) * 2013-02-06 2015-09-23 上海国茂数字技术有限公司 一种图像和视频编解码方法和系统
CN104299574B (zh) * 2014-11-13 2016-11-30 中颖电子股份有限公司 用于oled显示驱动装置的自动限流方法
CN108027978B (zh) * 2015-09-18 2023-09-22 交互数字Vc控股公司 用于hdr编码/解码的颜色分量采样的同位置亮度采样的确定
CN107948554B (zh) 2017-11-30 2021-07-06 深圳Tcl新技术有限公司 显示画面的对比度调节方法、显示器和可读存储介质
CN109300095A (zh) * 2018-08-27 2019-02-01 深圳Tcl新技术有限公司 图像增强方法、系统及计算机可读存储介质
CN110865856B (zh) * 2018-08-27 2022-04-22 华为技术有限公司 一种界面元素颜色显示方法及装置

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US5162902A (en) * 1991-12-16 1992-11-10 Thomson Consumer Electronics, Inc. Non-linear luminance signal processor responsive to average picture level (APL) of displayed image
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JP2957824B2 (ja) * 1992-11-17 1999-10-06 三洋電機株式会社 液晶映像表示装置の階調補正回路
EP0613294B1 (de) * 1993-02-24 1998-10-28 Matsushita Electric Industrial Co., Ltd. Vorrichtung zur Gradationskorrektur und Bildaufnahmegerät mit einer solchen Vorrichtung
JPH06350873A (ja) * 1993-06-08 1994-12-22 Hitachi Ltd テレビジョン受像機
JP3334321B2 (ja) * 1994-02-28 2002-10-15 株式会社島津製作所 Ｘ線テレビジョン装置
JP3429842B2 (ja) * 1994-04-15 2003-07-28 松下電器産業株式会社 映像信号の画像情報検出装置
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JP2951910B2 (ja) * 1997-03-18 1999-09-20 松下電器産業株式会社 撮像装置の階調補正装置及び階調補正方法
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Also Published As

Publication number Publication date
JP4562825B2 (ja) 2010-10-13
CN1137574C (zh) 2004-02-04
DE69934439T2 (de) 2007-09-27
CN1529516A (zh) 2004-09-15
DE69934439D1 (de) 2007-01-25
CN1303826C (zh) 2007-03-07
DE69916526T2 (de) 2004-09-23
JP2000059649A (ja) 2000-02-25
US6285413B1 (en) 2001-09-04
EP0963111A1 (de) 1999-12-08
CN1237850A (zh) 1999-12-08

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