TW200602858A - Image projection method, projector, and computer program - Google Patents

Image projection method, projector, and computer program

Info

Publication number
TW200602858A
TW200602858A TW093122960A TW93122960A TW200602858A TW 200602858 A TW200602858 A TW 200602858A TW 093122960 A TW093122960 A TW 093122960A TW 93122960 A TW93122960 A TW 93122960A TW 200602858 A TW200602858 A TW 200602858A
Authority
TW
Taiwan
Prior art keywords
image
screen
projected
aspect ratio
projector
Prior art date
Application number
TW093122960A
Other languages
Chinese (zh)
Other versions
TWI344596B (en
Inventor
Kazuya Arakawa
Original Assignee
Sharp Kk
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sharp Kk filed Critical Sharp Kk
Publication of TW200602858A publication Critical patent/TW200602858A/en
Application granted granted Critical
Publication of TWI344596B publication Critical patent/TWI344596B/en

Links

Classifications

    • 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
    • H04N9/3185—Geometric adjustment, e.g. keystone or convergence
    • 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]
    • H04N9/3191—Testing thereof
    • H04N9/3194—Testing thereof including sensor feedback
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0117—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal
    • H04N7/0122—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal the input and the output signals having different aspect ratios

Abstract

The present invention provides an image projecting method for automatically projecting an image while sustaining the aspect ratio when the aspect ratio of an image to be projected is different from that of an object to which the image is to be projected (screen). Four corner positions of a screen S are specified based on an image (3I) picked up at a camera section, an imaginary screen Vs of maximum dimensions is set on the screen S based on that result, the aspect ratio of the screen S and the aspect ratio of an image PJ to be projected with an aspect ratio identical to that of the image to be projected. The size of the image to be projected is then adjusted to coincide with that of the imaginary screen Vs and trapezoidal distortion is corrected.
TW093122960A 2004-07-15 2004-07-30 Image projection method, projector, and recording media TWI344596B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2004/010142 WO2006008792A1 (en) 2004-07-15 2004-07-15 Image projecting method, projector and computer program

Publications (2)

Publication Number Publication Date
TW200602858A true TW200602858A (en) 2006-01-16
TWI344596B TWI344596B (en) 2011-07-01

Family

ID=35784928

Family Applications (1)

Application Number Title Priority Date Filing Date
TW093122960A TWI344596B (en) 2004-07-15 2004-07-30 Image projection method, projector, and recording media

Country Status (2)

Country Link
TW (1) TWI344596B (en)
WO (1) WO2006008792A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006121240A (en) * 2004-10-20 2006-05-11 Sharp Corp Image projection method, projector, and computer program
JP3953500B1 (en) * 2006-02-07 2007-08-08 シャープ株式会社 Image projection method and projector
JP6035947B2 (en) * 2012-07-26 2016-11-30 セイコーエプソン株式会社 Image display device, image display method, and image display program
JP6700955B2 (en) * 2016-05-09 2020-05-27 キヤノン株式会社 Projection apparatus and projection method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11352591A (en) * 1998-06-12 1999-12-24 Denso Corp Video display device
JP2001069433A (en) * 1999-08-25 2001-03-16 Ricoh Co Ltd Image projector, image projection method, and computer- readable recording medium recording program to allow computer to execute the method
JP4507307B2 (en) * 1999-09-16 2010-07-21 独立行政法人科学技術振興機構 Video projection device
JP3844075B2 (en) * 2003-01-17 2006-11-08 セイコーエプソン株式会社 Image processing system, projector, program, information storage medium, and image processing method

Also Published As

Publication number Publication date
WO2006008792A1 (en) 2006-01-26
TWI344596B (en) 2011-07-01

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees