CN1303826C - 对视频图像的对比度进行动态改进所用的方法及设备 - Google Patents
对视频图像的对比度进行动态改进所用的方法及设备 Download PDFInfo
- Publication number
- CN1303826C CN1303826C CNB2004100012081A CN200410001208A CN1303826C CN 1303826 C CN1303826 C CN 1303826C CN B2004100012081 A CNB2004100012081 A CN B2004100012081A CN 200410001208 A CN200410001208 A CN 200410001208A CN 1303826 C CN1303826 C CN 1303826C
- Authority
- CN
- China
- Prior art keywords
- transfer function
- signal
- gain
- value
- luminance
- 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
Links
Images
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)
Abstract
Description
X=FR_PEAK_FLLT-TF_DPP | ROM_Address=X-Xmin | ROM_Value=2n/X当n=14 |
79 | 0 | 207 |
80 | 1 | 204 |
81 | 2 | 202 |
. | . | . |
. | . | . |
206 | 127 | 79 |
207 | 128 | 79 |
208 | 129 | 78 |
X=Y_CORDE_Ybl | ROM_Address=X-Xmin | ROM_Value=(2n)/X当n=13 |
17 | 0 | 481 |
18 | 1 | 455 |
19 | 2 | 431 |
236 | 219 | 34 |
237 | 220 | 34 |
238 | 221 | 34 |
Claims (28)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98109976.5 | 1998-06-02 | ||
EP98109976A EP0963111A1 (en) | 1998-06-02 | 1998-06-02 | Method and apparatus for dynamic contrast improvement in video pictures |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB991077393A Division CN1137574C (zh) | 1998-06-02 | 1999-05-28 | 对视频图像的对比度进行动态改进所用的方法及设备 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1529516A CN1529516A (zh) | 2004-09-15 |
CN1303826C true CN1303826C (zh) | 2007-03-07 |
Family
ID=8232044
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB991077393A Expired - Lifetime CN1137574C (zh) | 1998-06-02 | 1999-05-28 | 对视频图像的对比度进行动态改进所用的方法及设备 |
CNB2004100012081A Expired - Lifetime CN1303826C (zh) | 1998-06-02 | 1999-05-28 | 对视频图像的对比度进行动态改进所用的方法及设备 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB991077393A Expired - Lifetime CN1137574C (zh) | 1998-06-02 | 1999-05-28 | 对视频图像的对比度进行动态改进所用的方法及设备 |
Country Status (5)
Country | Link |
---|---|
US (1) | US6285413B1 (zh) |
EP (1) | EP0963111A1 (zh) |
JP (1) | JP4562825B2 (zh) |
CN (2) | CN1137574C (zh) |
DE (2) | DE69934439T2 (zh) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004519921A (ja) * | 2001-03-06 | 2004-07-02 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | ビデオ信号強調方法並びにこの方法を用いるユニット及び表示装置 |
JP4420385B2 (ja) * | 2001-11-01 | 2010-02-24 | トムソン ライセンシング | 動的コントラスト改善方法 |
US7218737B1 (en) * | 2002-08-21 | 2007-05-15 | Silicon Image, Inc. | System and method for an adaptive state machine to control signal filtering in a serial link |
KR100871686B1 (ko) * | 2002-08-23 | 2008-12-05 | 삼성전자주식회사 | 색상보존을 위한 대비 및 명도 개선방법 및 장치 |
US7106352B2 (en) * | 2003-03-03 | 2006-09-12 | Sun Microsystems, Inc. | Automatic gain control, brightness compression, and super-intensity samples |
KR100522607B1 (ko) * | 2003-07-15 | 2005-10-19 | 삼성전자주식회사 | 노이즈 상태를 고려한 적응적 비디오 신호 처리 장치 및방법 |
TWI234398B (en) * | 2003-11-20 | 2005-06-11 | Sunplus Technology Co Ltd | Automatic contrast limiting circuit by spatial domain infinite impulse response filter and method thereof |
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 |
EP1675407A1 (en) * | 2004-12-27 | 2006-06-28 | Robert Bosch Gmbh | Colour separation |
US8203574B2 (en) | 2005-09-30 | 2012-06-19 | Nxp B.V. | Dynamic softclipping of video levels |
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 (en) * | 2008-01-18 | 2010-03-03 | Fotonation Vision Limited | Image processing method and apparatus |
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 |
WO2010022558A1 (en) * | 2008-08-28 | 2010-03-04 | Hong Kong Applied Science and Technology Research Institute Co. Ltd | Digital image enhancement |
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 |
KR102538197B1 (ko) * | 2015-09-18 | 2023-05-30 | 인터디지털 브이씨 홀딩스 인코포레이티드 | Hdr 코딩/디코딩을 위한 컬러 성분 샘플의 코-로케이팅된 루미넌스 샘플의 결정 |
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 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0130294A2 (en) * | 1983-04-13 | 1985-01-09 | Victor Company Of Japan, Limited | Selective primary colour enhancement apparatus for an image pick-up device |
US5517333A (en) * | 1993-02-24 | 1996-05-14 | Matsushita Electric Industrial Co., Ltd. | Gradation correction device and image sensing device therewith for supplying images with good gradation for both front-lit and back-lit objects |
WO1997033271A1 (en) * | 1996-03-08 | 1997-09-12 | Honeywell Inc. | Signal enhancement system |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2575885B1 (fr) * | 1985-01-04 | 1987-02-20 | Thomson Csf | Renforcateur de contraste pour images video |
JP2521183Y2 (ja) * | 1987-09-29 | 1996-12-25 | ソニー株式会社 | ディジタル信号処理回路 |
US5099330A (en) * | 1988-10-28 | 1992-03-24 | Casio Computer Co., Ltd. | Contrast control based on mean and deviation values |
US5221963A (en) * | 1990-03-31 | 1993-06-22 | Minolta Camera Kabushiki Kaisha | Video camera having a video signal processing apparatus |
CA2040672C (en) * | 1990-04-26 | 1995-05-30 | Masaaki Kanashiki | Image signal processing apparatus |
JP2765272B2 (ja) * | 1991-05-31 | 1998-06-11 | 松下電器産業株式会社 | 輝度信号の自動黒伸長制御装置 |
US5191420A (en) * | 1991-12-16 | 1993-03-02 | Thomson Consumer Electronics, Inc. | Video system with feedback controlled "white stretch" processing and brightness compensation |
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 |
EP0570873B1 (en) * | 1992-05-22 | 1998-07-29 | Thomson Consumer Electronics, Inc. | Non-linear video signal processor employing picture element analysis |
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 |
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 |
JPH08195903A (ja) * | 1995-01-13 | 1996-07-30 | Fujitsu Ltd | 映像撮像装置 |
US5777590A (en) * | 1995-08-25 | 1998-07-07 | S3, Incorporated | Grayscale shading for liquid crystal display panels |
JP3130266B2 (ja) * | 1996-03-09 | 2001-01-31 | 三星電子株式会社 | 平均分離ヒストグラム等化を用いる映像改善方法及びその回路 |
JP3494815B2 (ja) * | 1996-07-29 | 2004-02-09 | 富士通株式会社 | 映像撮像装置 |
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 |
US6075574A (en) * | 1998-05-22 | 2000-06-13 | Ati Technologies, Inc | Method and apparatus for controlling contrast of images |
-
1998
- 1998-06-02 EP EP98109976A patent/EP0963111A1/en not_active Withdrawn
-
1999
- 1999-05-21 DE DE69934439T patent/DE69934439T2/de not_active Expired - Lifetime
- 1999-05-21 DE DE69916526T patent/DE69916526T2/de not_active Expired - Lifetime
- 1999-05-28 CN CNB991077393A patent/CN1137574C/zh not_active Expired - Lifetime
- 1999-05-28 CN CNB2004100012081A patent/CN1303826C/zh not_active Expired - Lifetime
- 1999-06-01 JP JP15428599A patent/JP4562825B2/ja not_active Expired - Lifetime
- 1999-06-02 US US09/324,495 patent/US6285413B1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0130294A2 (en) * | 1983-04-13 | 1985-01-09 | Victor Company Of Japan, Limited | Selective primary colour enhancement apparatus for an image pick-up device |
US5517333A (en) * | 1993-02-24 | 1996-05-14 | Matsushita Electric Industrial Co., Ltd. | Gradation correction device and image sensing device therewith for supplying images with good gradation for both front-lit and back-lit objects |
WO1997033271A1 (en) * | 1996-03-08 | 1997-09-12 | Honeywell Inc. | Signal enhancement system |
Also Published As
Publication number | Publication date |
---|---|
EP0963111A1 (en) | 1999-12-08 |
DE69916526D1 (de) | 2004-05-27 |
DE69934439T2 (de) | 2007-09-27 |
JP4562825B2 (ja) | 2010-10-13 |
CN1137574C (zh) | 2004-02-04 |
JP2000059649A (ja) | 2000-02-25 |
US6285413B1 (en) | 2001-09-04 |
CN1529516A (zh) | 2004-09-15 |
CN1237850A (zh) | 1999-12-08 |
DE69934439D1 (de) | 2007-01-25 |
DE69916526T2 (de) | 2004-09-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1303826C (zh) | 对视频图像的对比度进行动态改进所用的方法及设备 | |
US8155468B2 (en) | Image processing method and apparatus | |
US7903148B2 (en) | Apparatus, method, and computer program for processing image, and recording medium storing the computer program | |
US6724943B2 (en) | Device and method for image processing | |
US8654221B2 (en) | Image processing device and method, and program | |
KR101385961B1 (ko) | 영상신호의 색 노이즈 제거 장치 및 방법 | |
US7880814B2 (en) | Visual processing device, display device, and integrated circuit | |
JP4415236B2 (ja) | 画像処理装置及び画像処理方法 | |
EP1789921B1 (en) | Image processing method and computer software for image processing | |
US20060256240A1 (en) | Image processing apparatus | |
US8670079B2 (en) | Video display device | |
US7587089B2 (en) | Method and apparatus for image processing | |
US8189113B2 (en) | Image processing apparatus, video reception apparatus, and image processing method | |
WO2006006157A2 (en) | Automatic adaptive gamma correction | |
US8754990B2 (en) | Method and system for processing chroma signals | |
JP3818812B2 (ja) | 映像信号処理装置およびテレビジョン信号受信装置 | |
CN101031031B (zh) | 冲出抑制方法和图像质量改善设备 | |
GB2431810A (en) | Processing a video signal to perform black stretching and/or brightness correction in accordance with a luminance distribution | |
JPH1155546A (ja) | 映像信号の輪郭補正装置 | |
IE20080497U1 (en) | Image processing method and apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20190423 Address after: Paris France Patentee after: International Digital Madison Patent Holding Co. Address before: I Si Eli Murli Nor, France Patentee before: THOMSON LICENSING Effective date of registration: 20190423 Address after: I Si Eli Murli Nor, France Patentee after: THOMSON LICENSING Address before: I Si Eli Murli Nor, France Patentee before: THOMSON LICENSING S.A. Effective date of registration: 20190423 Address after: I Si Eli Murli Nor, France Patentee after: THOMSON LICENSING S.A. Address before: La France Patentee before: COLOR PRINTING TECHNOLOGY Co. Effective date of registration: 20190423 Address after: La France Patentee after: COLOR PRINTING TECHNOLOGY Co. Address before: German villingen schwenningen Patentee before: Thomson-Brant GmbH, Germany |
|
TR01 | Transfer of patent right | ||
CX01 | Expiry of patent term |
Granted publication date: 20070307 |
|
CX01 | Expiry of patent term |