CN1286063C - 用于液晶投影仪的图象赝象去除方法和设备 - Google Patents

用于液晶投影仪的图象赝象去除方法和设备 Download PDF

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Publication number
CN1286063C
CN1286063C CNB021024014A CN02102401A CN1286063C CN 1286063 C CN1286063 C CN 1286063C CN B021024014 A CNB021024014 A CN B021024014A CN 02102401 A CN02102401 A CN 02102401A CN 1286063 C CN1286063 C CN 1286063C
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CN
China
Prior art keywords
pixel
image
mask
screen
center
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
Application number
CNB021024014A
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English (en)
Chinese (zh)
Other versions
CN1366270A (zh
Inventor
疏效平
陈昭元
林宗男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
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Seiko Epson Corp
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Publication date
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Publication of CN1366270A publication Critical patent/CN1366270A/zh
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Publication of CN1286063C publication Critical patent/CN1286063C/zh
Anticipated expiration legal-status Critical
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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
    • G06T5/73—Deblurring; Sharpening
    • G06T5/75—Unsharp masking
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/20—Image enhancement or restoration using local operators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3179—Video signal processing therefor
    • 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
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Analysis (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
CNB021024014A 2001-01-18 2002-01-18 用于液晶投影仪的图象赝象去除方法和设备 Expired - Fee Related CN1286063C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/766122 2001-01-18
US09/766,122 US6879733B2 (en) 2001-01-18 2001-01-18 Image artifact removal technique for LCP

Publications (2)

Publication Number Publication Date
CN1366270A CN1366270A (zh) 2002-08-28
CN1286063C true CN1286063C (zh) 2006-11-22

Family

ID=25075469

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB021024014A Expired - Fee Related CN1286063C (zh) 2001-01-18 2002-01-18 用于液晶投影仪的图象赝象去除方法和设备

Country Status (5)

Country Link
US (1) US6879733B2 (https=)
EP (1) EP1231567B1 (https=)
JP (1) JP4123781B2 (https=)
KR (1) KR100521963B1 (https=)
CN (1) CN1286063C (https=)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100471084B1 (ko) * 2002-12-16 2005-03-10 삼성전자주식회사 영상처리시스템 및 영상처리방법
US7129870B2 (en) * 2003-08-29 2006-10-31 Fujitsu Limited Superconducting latch driver circuit generating sufficient output voltage and pulse-width
US20060099318A1 (en) * 2004-11-04 2006-05-11 Kao Corporation Non-tea-based, packaged beverages
US7783117B2 (en) * 2005-08-12 2010-08-24 Seiko Epson Corporation Systems and methods for generating background and foreground images for document compression
US7899258B2 (en) * 2005-08-12 2011-03-01 Seiko Epson Corporation Systems and methods to convert images into high-quality compressed documents
WO2007029235A2 (en) * 2005-09-05 2007-03-15 Algosoft Limited Automatic digital film and video restoration
TWI343743B (en) * 2006-01-20 2011-06-11 Realtek Semiconductor Corp Image processing circuit and method
TWI386032B (zh) * 2006-04-20 2013-02-11 Realtek Semiconductor Corp 型樣偵測方法與相關的影像處理裝置
TWI323435B (en) * 2006-05-10 2010-04-11 Realtek Semiconductor Corp Pattern detecting method and apparatus thereof
TWI342154B (en) * 2006-05-17 2011-05-11 Realtek Semiconductor Corp Method and related apparatus for determining image characteristics
US7894689B2 (en) * 2007-05-31 2011-02-22 Seiko Epson Corporation Image stitching
JP5746556B2 (ja) * 2011-05-11 2015-07-08 キヤノン株式会社 画像処理装置、画像処理方法、及びプログラム
CN106297613B (zh) * 2016-08-08 2019-08-02 深圳市华星光电技术有限公司 一种显示屏残影检测系统及方法
US11109005B2 (en) * 2019-04-18 2021-08-31 Christie Digital Systems Usa, Inc. Device, system and method for enhancing one or more of high contrast regions and text regions in projected images
US11488285B2 (en) * 2020-04-13 2022-11-01 Apple Inc. Content based image processing

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2170373B (en) 1984-12-28 1989-03-15 Canon Kk Image processing apparatus
JPH0683374B2 (ja) * 1986-02-14 1994-10-19 富士写真フイルム株式会社 網点画像の形成方法
JPS6460087A (en) 1987-08-31 1989-03-07 Canon Kk Signal processing circuit
JP3050282B2 (ja) 1996-03-06 2000-06-12 日本電気株式会社 液晶プロジェクタの歪み補正装置
US5798846A (en) * 1996-05-28 1998-08-25 Hewlett-Packard Company Apparatus and method for selectively processing a scanned image
US6160913A (en) * 1998-03-25 2000-12-12 Eastman Kodak Company Method and apparatus for digital halftone dots detection and removal in business documents
US6633411B1 (en) * 1998-04-01 2003-10-14 International Business Machines Corporation Method and apparatus for repurposing binary images
EP1079601B1 (en) 1999-03-05 2008-06-18 Seiko Epson Corporation Image data correcting device, image data correcting method, medium on which image data correcting program is recorded

Also Published As

Publication number Publication date
CN1366270A (zh) 2002-08-28
EP1231567A2 (en) 2002-08-14
EP1231567A3 (en) 2003-08-27
JP2002259964A (ja) 2002-09-13
JP4123781B2 (ja) 2008-07-23
KR100521963B1 (ko) 2005-10-14
EP1231567B1 (en) 2013-03-13
US20020094128A1 (en) 2002-07-18
KR20020061495A (ko) 2002-07-24
US6879733B2 (en) 2005-04-12

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Granted publication date: 20061122

Termination date: 20130118

CF01 Termination of patent right due to non-payment of annual fee