CN1069010C - 增强视频信号局部对比度的方法及设备 - Google Patents

增强视频信号局部对比度的方法及设备 Download PDF

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Publication number
CN1069010C
CN1069010C CN96121900A CN96121900A CN1069010C CN 1069010 C CN1069010 C CN 1069010C CN 96121900 A CN96121900 A CN 96121900A CN 96121900 A CN96121900 A CN 96121900A CN 1069010 C CN1069010 C CN 1069010C
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China
Prior art keywords
contrast
local contrast
signal
window
video signal
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Expired - Fee Related
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CN96121900A
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English (en)
Chinese (zh)
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CN1155807A (zh
Inventor
金永铎
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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Publication of CN1155807A publication Critical patent/CN1155807A/zh
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Publication of CN1069010C publication Critical patent/CN1069010C/zh
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    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Image Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Facsimile Image Signal Circuits (AREA)
CN96121900A 1995-12-13 1996-12-10 增强视频信号局部对比度的方法及设备 Expired - Fee Related CN1069010C (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR49345/95 1995-12-13
KR49345/1995 1995-12-13
KR1019950049345A KR100206319B1 (ko) 1995-12-13 1995-12-13 비디오 신호의 로컬 콘트라스트 개선을 위한 방법및장치

Publications (2)

Publication Number Publication Date
CN1155807A CN1155807A (zh) 1997-07-30
CN1069010C true CN1069010C (zh) 2001-07-25

Family

ID=19439673

Family Applications (1)

Application Number Title Priority Date Filing Date
CN96121900A Expired - Fee Related CN1069010C (zh) 1995-12-13 1996-12-10 增强视频信号局部对比度的方法及设备

Country Status (7)

Country Link
US (1) US5930402A (2)
JP (1) JP3156993B2 (2)
KR (1) KR100206319B1 (2)
CN (1) CN1069010C (2)
GB (1) GB2308265B (2)
IN (1) IN190917B (2)
MY (1) MY123725A (2)

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KR100343744B1 (ko) * 2000-09-30 2002-07-20 엘지전자주식회사 영상신호의 콘트라스트 향상 장치
DE60137076D1 (de) * 2000-11-30 2009-01-29 Canon Kk Bildverarbeitungseinrichtung, bildverarbeitungsverfahren, aufzeichnungsmedium und programm
JP3833177B2 (ja) * 2000-11-30 2006-10-11 キヤノン株式会社 画像処理装置、画象処理方法、記憶媒体及びプログラム
US7130483B2 (en) * 2001-12-12 2006-10-31 Samsung Electronics Co., Ltd. Method for enhancing a digital image while suppressing undershoots and overshoots
US7271851B2 (en) * 2003-01-16 2007-09-18 Samsung Electronics Co., Ltd. Adaptive color transient improvement
KR100497395B1 (ko) * 2003-06-30 2005-06-23 삼성전자주식회사 화질을 자동으로 설정하는 방법
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
US7856141B2 (en) * 2006-09-01 2010-12-21 Mediatek Inc. Method for adjusting saturation and contrast of an area of an image and apparatus thereof
US7602988B2 (en) * 2006-09-01 2009-10-13 Mediatek Inc. Method for adjusting saturation and contrast of an area of an image and apparatus thereof
JP4893489B2 (ja) * 2007-06-15 2012-03-07 ソニー株式会社 画像処理装置、画像処理方法、画像処理方法のプログラム及び画像処理方法のプログラムを記録した記録媒体
TWI466093B (zh) * 2007-06-26 2014-12-21 Apple Inc 用於視訊播放的管理技術
TWI479891B (zh) * 2007-06-26 2015-04-01 Apple Inc 動態背光調適
US8766902B2 (en) * 2007-12-21 2014-07-01 Apple Inc. Management techniques for video playback
JP4453777B2 (ja) * 2008-07-15 2010-04-21 日本ビクター株式会社 画質改善装置及び方法
WO2010033539A2 (en) * 2008-09-16 2010-03-25 Second Sight Medical Products Digital image filters and related methods for image contrast enhancement
US8103120B2 (en) * 2008-09-22 2012-01-24 Solomon Systech Limited Method and apparatus of local contrast enhancement
EP2690860B1 (en) * 2011-03-24 2016-04-20 Mitsubishi Electric Corporation Image processing device and method
US9008458B2 (en) 2013-02-07 2015-04-14 Raytheon Company Local area processing using packed distribution functions
CN105654435B (zh) * 2015-12-25 2018-09-11 武汉鸿瑞达信息技术有限公司 一种人脸皮肤柔化美白方法
KR102405309B1 (ko) 2016-02-12 2022-06-07 삼성전자주식회사 디스플레이 장치 및 그 디스플레이 방법

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US3996421A (en) * 1975-09-02 1976-12-07 Hughes Aircraft Company Television display utilizing local area brightness control
US4187519A (en) * 1978-08-17 1980-02-05 Rockwell International Corporation System for expanding the video contrast of an image
US4231065A (en) * 1979-01-11 1980-10-28 Honeywell Inc. Local area contrast enhancement device

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JPS6346880A (ja) * 1986-08-14 1988-02-27 Nec Corp 画像強調回路
DE3629409C2 (de) * 1986-08-29 1994-02-17 Agfa Gevaert Ag Verfahren und Vorrichtung zur Kontrastbewertung bei der elektronischen Bildverarbeitung
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JPH071925B2 (ja) * 1987-03-18 1995-01-11 デイジビジヨン・インコ−ポレ−テツド 分離可能な２次元フイルタを使用するビデオ映像の実時間局部増強装置
JPS6482879A (en) * 1987-09-25 1989-03-28 Japan Broadcasting Corp Adaptive type emphasis system
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JPH04176266A (ja) * 1990-11-09 1992-06-23 Matsushita Electric Ind Co Ltd 輪郭補正装置
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Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3996421A (en) * 1975-09-02 1976-12-07 Hughes Aircraft Company Television display utilizing local area brightness control
US4187519A (en) * 1978-08-17 1980-02-05 Rockwell International Corporation System for expanding the video contrast of an image
US4231065A (en) * 1979-01-11 1980-10-28 Honeywell Inc. Local area contrast enhancement device

Also Published As

Publication number Publication date
CN1155807A (zh) 1997-07-30
IN190917B (2) 2003-08-30
KR100206319B1 (ko) 1999-07-01
GB2308265B (en) 1998-02-11
JP3156993B2 (ja) 2001-04-16
US5930402A (en) 1999-07-27
GB2308265A (en) 1997-06-18
MY123725A (en) 2006-05-31
GB9625981D0 (en) 1997-01-29
JPH09181940A (ja) 1997-07-11
KR970057474A (ko) 1997-07-31

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Granted publication date: 20010725

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