JP4484722B2 - 画像信号処理方法及び画像信号処理回路 - Google Patents

画像信号処理方法及び画像信号処理回路 Download PDF

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Publication number
JP4484722B2
JP4484722B2 JP2005032913A JP2005032913A JP4484722B2 JP 4484722 B2 JP4484722 B2 JP 4484722B2 JP 2005032913 A JP2005032913 A JP 2005032913A JP 2005032913 A JP2005032913 A JP 2005032913A JP 4484722 B2 JP4484722 B2 JP 4484722B2
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Japan
Prior art keywords
curve
image signal
evaluation value
difference
gradation
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Expired - Fee Related
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JP2005032913A
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English (en)
Japanese (ja)
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JP2005278149A (ja
JP2005278149A5 (enExample
Inventor
泉 金井
宗棋 安藤
光勢 杉本
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Canon Inc
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Canon Inc
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Priority to JP2005032913A priority Critical patent/JP4484722B2/ja
Priority to US11/065,156 priority patent/US20050190968A1/en
Publication of JP2005278149A publication Critical patent/JP2005278149A/ja
Publication of JP2005278149A5 publication Critical patent/JP2005278149A5/ja
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/40—Image enhancement or restoration using histogram techniques
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Picture Signal Circuits (AREA)
JP2005032913A 2004-02-27 2005-02-09 画像信号処理方法及び画像信号処理回路 Expired - Fee Related JP4484722B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2005032913A JP4484722B2 (ja) 2004-02-27 2005-02-09 画像信号処理方法及び画像信号処理回路
US11/065,156 US20050190968A1 (en) 2004-02-27 2005-02-25 Image signal processing method and image signal processing circuit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004055405 2004-02-27
JP2005032913A JP4484722B2 (ja) 2004-02-27 2005-02-09 画像信号処理方法及び画像信号処理回路

Publications (3)

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JP2005278149A JP2005278149A (ja) 2005-10-06
JP2005278149A5 JP2005278149A5 (enExample) 2009-10-08
JP4484722B2 true JP4484722B2 (ja) 2010-06-16

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JP2005032913A Expired - Fee Related JP4484722B2 (ja) 2004-02-27 2005-02-09 画像信号処理方法及び画像信号処理回路

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US (1) US20050190968A1 (enExample)
JP (1) JP4484722B2 (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4250595B2 (ja) * 2004-02-16 2009-04-08 キヤノン株式会社 信号処理方法及び信号処理回路
JP4497959B2 (ja) * 2004-03-05 2010-07-07 キヤノン株式会社 映像信号処理装置及び映像信号処理方法
JP2005292804A (ja) * 2004-03-10 2005-10-20 Canon Inc 制御装置及び画像表示装置
JP4761560B2 (ja) * 2006-10-12 2011-08-31 キヤノン株式会社 画像信号処理装置及び画像信号処理方法
US8326028B2 (en) * 2007-12-26 2012-12-04 Hitachi Computer Peripherals Co., Ltd. Dropout color processing method and processing apparatus using same
JP2017151308A (ja) 2016-02-25 2017-08-31 キヤノン株式会社 情報処理装置および情報処理方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4802350B2 (ja) * 1998-03-12 2011-10-26 ソニー株式会社 表示装置
JPS60139080A (ja) * 1983-12-27 1985-07-23 Canon Inc 画像処理装置
DE69227492T2 (de) * 1991-08-30 1999-04-08 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Bildverarbeitungsgerät
JP3255677B2 (ja) * 1992-01-14 2002-02-12 松下電器産業株式会社 自動階調補正回路と輝度制御方法
JPH06332399A (ja) * 1993-05-19 1994-12-02 Fujitsu General Ltd 電子ディスプレイの制御方法およびその装置
KR0142263B1 (ko) * 1994-08-06 1998-06-15 김광호 디지탈 감마 보정방법 및 그 장치
JP3667182B2 (ja) * 1999-12-28 2005-07-06 キヤノン株式会社 画像処理方法および画像処理装置
US7006668B2 (en) * 1999-12-28 2006-02-28 Canon Kabushiki Kaisha Image processing method and image processing apparatus
TW518882B (en) * 2000-03-27 2003-01-21 Hitachi Ltd Liquid crystal display device for displaying video data
US7003153B1 (en) * 2000-09-29 2006-02-21 Sharp Laboratories Of America, Inc. Video contrast enhancement through partial histogram equalization
JP2002165095A (ja) * 2000-11-27 2002-06-07 Olympus Optical Co Ltd 画像階調変換回路
JP4250595B2 (ja) * 2004-02-16 2009-04-08 キヤノン株式会社 信号処理方法及び信号処理回路
JP2005292804A (ja) * 2004-03-10 2005-10-20 Canon Inc 制御装置及び画像表示装置
JP4086852B2 (ja) * 2004-03-16 2008-05-14 キヤノン株式会社 画像表示装置

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JP2005278149A (ja) 2005-10-06
US20050190968A1 (en) 2005-09-01

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