JP4504294B2 - 映像信号処理装置及び映像信号処理方法 - Google Patents

映像信号処理装置及び映像信号処理方法 Download PDF

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Publication number
JP4504294B2
JP4504294B2 JP2005285759A JP2005285759A JP4504294B2 JP 4504294 B2 JP4504294 B2 JP 4504294B2 JP 2005285759 A JP2005285759 A JP 2005285759A JP 2005285759 A JP2005285759 A JP 2005285759A JP 4504294 B2 JP4504294 B2 JP 4504294B2
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Japan
Prior art keywords
histogram data
luminance
input
signal
frequency conversion
Prior art date
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Expired - Fee Related
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JP2005285759A
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English (en)
Japanese (ja)
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JP2007096997A5 (https=
JP2007096997A (ja
Inventor
弘俊 宮沢
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Toshiba Corp
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Toshiba Corp
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Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP2005285759A priority Critical patent/JP4504294B2/ja
Priority to US11/519,796 priority patent/US20070076974A1/en
Publication of JP2007096997A publication Critical patent/JP2007096997A/ja
Publication of JP2007096997A5 publication Critical patent/JP2007096997A5/ja
Application granted granted Critical
Publication of JP4504294B2 publication Critical patent/JP4504294B2/ja
Priority to US13/181,135 priority patent/US20110267543A1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
    • H04N21/4318—Generation of visual interfaces for content selection or interaction; Content or additional data rendering by altering the content in the rendering process, e.g. blanking, blurring or masking an image region
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
    • 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
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Picture Signal Circuits (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Image Processing (AREA)
JP2005285759A 2005-09-30 2005-09-30 映像信号処理装置及び映像信号処理方法 Expired - Fee Related JP4504294B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2005285759A JP4504294B2 (ja) 2005-09-30 2005-09-30 映像信号処理装置及び映像信号処理方法
US11/519,796 US20070076974A1 (en) 2005-09-30 2006-09-13 Picture signal processing apparatus and picture signal processing method
US13/181,135 US20110267543A1 (en) 2005-09-30 2011-07-12 Picture signal processing apparatus and picture signal processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005285759A JP4504294B2 (ja) 2005-09-30 2005-09-30 映像信号処理装置及び映像信号処理方法

Publications (3)

Publication Number Publication Date
JP2007096997A JP2007096997A (ja) 2007-04-12
JP2007096997A5 JP2007096997A5 (https=) 2007-11-29
JP4504294B2 true JP4504294B2 (ja) 2010-07-14

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Family Applications (1)

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JP2005285759A Expired - Fee Related JP4504294B2 (ja) 2005-09-30 2005-09-30 映像信号処理装置及び映像信号処理方法

Country Status (2)

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US (2) US20070076974A1 (https=)
JP (1) JP4504294B2 (https=)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5332172B2 (ja) * 2006-11-10 2013-11-06 セイコーエプソン株式会社 画像表示制御装置
WO2011010357A1 (ja) * 2009-07-21 2011-01-27 Ｎｅｃディスプレイソリューションズ株式会社 絞り制御回路、プロジェクター装置、絞り制御プログラム及び絞り制御方法
JP5023203B2 (ja) 2010-08-24 2012-09-12 株式会社東芝 画像補正装置及び補正パラメータ作成装置
JP5319814B2 (ja) * 2012-03-22 2013-10-16 株式会社東芝 画像処理装置及び画像処理方法
JP6000133B2 (ja) * 2013-01-08 2016-09-28 株式会社 日立産業制御ソリューションズ 撮像装置、撮像システム及び撮像方法
JP2014002398A (ja) * 2013-08-02 2014-01-09 Ｎｅｃディスプレイソリューションズ株式会社 プロジェクター装置および絞り制御方法
JP2016109841A (ja) * 2014-12-05 2016-06-20 セイコーエプソン株式会社 表示装置、及び、表示装置の制御方法
US10354370B2 (en) * 2016-03-24 2019-07-16 Panasonic Intellectual Property Management Co., Ltd. Image processor, image processing method, and program

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US678136A (en) * 1900-04-07 1901-07-09 Charles Ward Russell Cloth-drying machine.
JP2512562B2 (ja) * 1989-10-12 1996-07-03 松下電器産業株式会社 階調補正装置
JPH04196761A (ja) * 1990-11-28 1992-07-16 Canon Inc 画像形成装置
US5710828A (en) * 1995-03-30 1998-01-20 Fuji Photo Film Co., Ltd. Method and apparatus for converting a threshold matrix which is then used to binarize image signals
JP3501252B2 (ja) * 1995-06-16 2004-03-02 三菱電機株式会社 階調補正装置
JP3845509B2 (ja) * 1997-12-19 2006-11-15 株式会社東芝 画像処理装置および画像形成装置
TWI249630B (en) * 1999-05-10 2006-02-21 Matsushita Electric Industrial Co Ltd Image display device and method for displaying image
EP1134698A1 (en) * 2000-03-13 2001-09-19 Koninklijke Philips Electronics N.V. Video-apparatus with histogram modification means
JP3938456B2 (ja) * 2000-03-16 2007-06-27 パイオニア株式会社 映像信号の輝度階調補正装置
JP3986732B2 (ja) * 2000-06-21 2007-10-03 パイオニア株式会社 映像信号の輝度レベル補正装置
US7058221B1 (en) * 2000-07-07 2006-06-06 Tani Electronics Industry Co., Ltd. Method of recognizing object based on pattern matching and medium for recording computer program having same
JP4003399B2 (ja) * 2000-10-23 2007-11-07 ソニー株式会社 画像処理装置および方法、並びに記録媒体
TWI245557B (en) * 2003-09-11 2005-12-11 Matsushita Electric Industrial Co Ltd Image compensation apparatus and method for the same
JP2005159693A (ja) * 2003-11-26 2005-06-16 Olympus Corp 画像処理装置

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Publication number Publication date
JP2007096997A (ja) 2007-04-12
US20110267543A1 (en) 2011-11-03
US20070076974A1 (en) 2007-04-05

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