DE69224102D1 - Gradationskorrekturanordnung für Videosignal - Google Patents
Gradationskorrekturanordnung für VideosignalInfo
- Publication number
- DE69224102D1 DE69224102D1 DE69224102T DE69224102T DE69224102D1 DE 69224102 D1 DE69224102 D1 DE 69224102D1 DE 69224102 T DE69224102 T DE 69224102T DE 69224102 T DE69224102 T DE 69224102T DE 69224102 D1 DE69224102 D1 DE 69224102D1
- Authority
- DE
- Germany
- Prior art keywords
- video signal
- gradation correction
- correction arrangement
- arrangement
- gradation
- 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 - Fee Related
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/90—Dynamic range modification of images or parts thereof
- G06T5/92—Dynamic range modification of images or parts thereof based on global image properties
-
- 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
- H04N5/202—Gamma control
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/40—Image enhancement or restoration using histogram techniques
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Picture Signal Circuits (AREA)
- Television Receiver Circuits (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3123647A JPH04349784A (ja) | 1991-05-28 | 1991-05-28 | 階調補正装置 |
JP3123648A JP3021769B2 (ja) | 1991-05-28 | 1991-05-28 | 階調補正装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69224102D1 true DE69224102D1 (de) | 1998-02-26 |
DE69224102T2 DE69224102T2 (de) | 1998-07-23 |
Family
ID=26460527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69224102T Expired - Fee Related DE69224102T2 (de) | 1991-05-28 | 1992-05-27 | Gradationskorrekturanordnung für Videosignal |
Country Status (8)
Country | Link |
---|---|
US (1) | US5289282A (de) |
EP (1) | EP0516084B1 (de) |
KR (1) | KR960011974B1 (de) |
CN (1) | CN1026378C (de) |
AU (1) | AU641320B2 (de) |
CA (1) | CA2069365C (de) |
DE (1) | DE69224102T2 (de) |
MY (1) | MY108732A (de) |
Families Citing this family (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04271669A (ja) * | 1991-02-27 | 1992-09-28 | Matsushita Electric Ind Co Ltd | 階調補正装置 |
JPH0799862B2 (ja) * | 1991-03-22 | 1995-10-25 | 松下電器産業株式会社 | 階調補正装置 |
JP2936791B2 (ja) * | 1991-05-28 | 1999-08-23 | 松下電器産業株式会社 | 階調補正装置 |
EP0613294B1 (de) * | 1993-02-24 | 1998-10-28 | Matsushita Electric Industrial Co., Ltd. | Vorrichtung zur Gradationskorrektur und Bildaufnahmegerät mit einer solchen Vorrichtung |
JPH0773308A (ja) * | 1993-09-03 | 1995-03-17 | Matsushita Electric Ind Co Ltd | デジタル画像処理装置 |
BE1007777A3 (nl) * | 1993-11-23 | 1995-10-17 | Philips Electronics Nv | Niet-lineaire signaalverwerking. |
KR0142290B1 (ko) * | 1993-11-24 | 1998-06-15 | 김광호 | 장면적응 영상개선방법 및 그 회로 |
US6002797A (en) | 1994-06-22 | 1999-12-14 | Hitachi, Ltd. | Apparatus for detecting position of featuring region of picture, such as subtitle or imageless part |
JPH0852638A (ja) * | 1994-08-15 | 1996-02-27 | Toshiba Mach Co Ltd | 干渉チェック方法および加工プログラムチェック方法および加工適否チェック方法 |
JP2795214B2 (ja) * | 1994-10-12 | 1998-09-10 | 日本電気株式会社 | Vdt障害緩和方法および画像周波数減衰装置およびvdtアダプタ |
TW373402B (en) * | 1996-01-10 | 1999-11-01 | Matsushita Electric Ind Co Ltd | Television receiver |
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 |
ES2185874T3 (es) * | 1996-04-10 | 2003-05-01 | Samsung Electronics Co Ltd | Procedimiento para mejorar la calidad de imagen mediante la ecualizacion de histograma por ajuste a la media y circuito para su realizacion. |
JP3685575B2 (ja) * | 1997-01-30 | 2005-08-17 | 三菱電機株式会社 | ディスプレイ装置 |
MY118340A (en) * | 1997-03-06 | 2004-10-30 | Matsushita Electric Ind Co Ltd | Histogram generator. |
US6038341A (en) * | 1997-03-06 | 2000-03-14 | Matsushita Electric Industrial Co., Ltd. | Histogram operating unit for video signals |
US6373533B1 (en) | 1997-03-06 | 2002-04-16 | Matsushita Electric Industrial Co., Ltd. | Image quality correction circuit for video signals |
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 |
EP1070423A1 (de) * | 1999-02-05 | 2001-01-24 | Koninklijke Philips Electronics N.V. | Histogrammkompensation |
JP3661168B2 (ja) * | 1999-11-25 | 2005-06-15 | 松下電器産業株式会社 | 階調補正装置、階調補正方法、及び映像表示装置 |
TW518882B (en) | 2000-03-27 | 2003-01-21 | Hitachi Ltd | Liquid crystal display device for displaying video data |
EP1164784A1 (de) * | 2000-06-13 | 2001-12-19 | Koninklijke Philips Electronics N.V. | Verhinderung des Wölbungsphänomens |
JP4783985B2 (ja) * | 2001-02-28 | 2011-09-28 | 日本電気株式会社 | 映像処理装置、映像表示装置及びそれに用いる映像処理方法並びにそのプログラム |
JP3992177B2 (ja) * | 2001-11-29 | 2007-10-17 | 株式会社リコー | 画像処理装置、画像処理方法及びコンピュータ・プログラム |
KR20040040699A (ko) * | 2002-11-07 | 2004-05-13 | 삼성전자주식회사 | 콘트라스트 보정 장치 및 방법 |
US20040109091A1 (en) * | 2002-12-03 | 2004-06-10 | Samsung Electronics Co., Ltd. | Apparatus and method for adaptive brightness control |
JP4271978B2 (ja) * | 2003-04-18 | 2009-06-03 | 株式会社日立製作所 | 映像表示装置 |
JP2005130159A (ja) * | 2003-10-23 | 2005-05-19 | Sony Corp | 撮像装置および撮像装置の手振れ補正方法 |
US7362290B2 (en) * | 2003-10-29 | 2008-04-22 | Seiko Epson Corporation | Image signal correcting circuit, image processing method, electro-optical device and electronic apparatus |
JP2005202159A (ja) * | 2004-01-15 | 2005-07-28 | Seiko Epson Corp | 電気光学装置、その駆動回路、その駆動方法および電子機器 |
CN1305317C (zh) * | 2004-12-27 | 2007-03-14 | 北京中星微电子有限公司 | 一种视频监控***中的图像亮度修正方法 |
JP4419933B2 (ja) * | 2005-08-26 | 2010-02-24 | ソニー株式会社 | 画像処理装置、画像表示装置および画像処理方法 |
JP4921202B2 (ja) * | 2006-03-15 | 2012-04-25 | キヤノン株式会社 | ジョブ履歴管理システム、その制御方法、プログラム及び記憶媒体 |
KR100849845B1 (ko) * | 2006-09-05 | 2008-08-01 | 삼성전자주식회사 | 영상 보정 방법 및 장치 |
JP4835525B2 (ja) * | 2007-07-04 | 2011-12-14 | ソニー株式会社 | 画像処理装置、画像処理方法及びプログラム |
KR101132069B1 (ko) * | 2010-02-03 | 2012-04-02 | 삼성모바일디스플레이주식회사 | 유기 전계발광 표시장치 및 그 구동방법 |
WO2012050203A1 (ja) * | 2010-10-15 | 2012-04-19 | シャープ株式会社 | 画像処理装置、画像処理方法、画像処理プログラム、記録媒体 |
JP6241192B2 (ja) | 2013-10-18 | 2017-12-06 | 株式会社リコー | 画像処理装置、画像処理システム、画像処理方法、プログラム及び記録媒体 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59125176A (ja) * | 1982-12-30 | 1984-07-19 | インタ−ナシヨナル ビジネス マシ−ンズ コ−ポレ−シヨン | ビデオイメ−ジのシエ−ジング効果の補正装置 |
US4731662A (en) * | 1985-03-21 | 1988-03-15 | Canon Kabushiki Kaisha | Image processing method for processing an image signal differently depending on the range of an image characteristic thereof relative to the range within which an output device can reproduce the image characteristic |
JPS63274281A (ja) * | 1987-04-30 | 1988-11-11 | Nec Corp | 画像信号帯域圧縮方式 |
US4786968A (en) * | 1987-07-16 | 1988-11-22 | Sony Corporation | Gamma correction of digital video data by calculating linearly interpolated gamma correction values |
JP2512562B2 (ja) * | 1989-10-12 | 1996-07-03 | 松下電器産業株式会社 | 階調補正装置 |
JPH04271669A (ja) * | 1991-02-27 | 1992-09-28 | Matsushita Electric Ind Co Ltd | 階調補正装置 |
JPH0799862B2 (ja) * | 1991-03-22 | 1995-10-25 | 松下電器産業株式会社 | 階調補正装置 |
JP2936791B2 (ja) * | 1991-05-28 | 1999-08-23 | 松下電器産業株式会社 | 階調補正装置 |
-
1992
- 1992-05-22 US US07/886,801 patent/US5289282A/en not_active Expired - Lifetime
- 1992-05-25 CA CA002069365A patent/CA2069365C/en not_active Expired - Fee Related
- 1992-05-26 AU AU17140/92A patent/AU641320B2/en not_active Ceased
- 1992-05-27 DE DE69224102T patent/DE69224102T2/de not_active Expired - Fee Related
- 1992-05-27 MY MYPI92000907A patent/MY108732A/en unknown
- 1992-05-27 EP EP92108950A patent/EP0516084B1/de not_active Expired - Lifetime
- 1992-05-27 KR KR1019920008985A patent/KR960011974B1/ko not_active IP Right Cessation
- 1992-05-28 CN CN92104239A patent/CN1026378C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN1026378C (zh) | 1994-10-26 |
AU1714092A (en) | 1993-03-11 |
EP0516084A2 (de) | 1992-12-02 |
US5289282A (en) | 1994-02-22 |
DE69224102T2 (de) | 1998-07-23 |
AU641320B2 (en) | 1993-09-16 |
KR960011974B1 (ko) | 1996-09-06 |
MY108732A (en) | 1996-11-30 |
KR920022879A (ko) | 1992-12-19 |
EP0516084A3 (de) | 1994-08-03 |
EP0516084B1 (de) | 1998-01-21 |
CA2069365C (en) | 1999-08-31 |
CN1067347A (zh) | 1992-12-23 |
CA2069365A1 (en) | 1992-11-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |