2.
    发明专利
    未知

    公开(公告)号:NO330155B1

    公开(公告)日:2011-02-28

    申请号:NO20060984

    申请日:2006-02-28

    Inventor: KROGSTAD KNUT

    Abstract: A method and a device for use in calibrating a projector image display towards a display screen, wherein the display screen is equipped with a plurality of discrete light detection points on or in the front surface of the screen, or located immediately below the front surface, wherein each light detection point or groups thereof are associated with a light detector, wherein at least one image is projected towards the display screen, and wherein it is determined which image pixel or pixels of the projected image hit the respective detection point on the screen, and/or wherein brightness and/or colours in the projected image are correlated by comparing measurements at the detection points and relevant projector parameters are adjusted correspondingly.

    DIGITAL CORRECTION MODULE FOR VIDEO PROJECTOR

    公开(公告)号:EP1260097B1

    公开(公告)日:2018-08-08

    申请号:EP01951197.1

    申请日:2001-01-25

    Abstract: Digital correction module for video projector where a correction module is provided to give a non-linear re-imaging of an image so that it is displayed correct on a non-ideal screen (curved screen) where a correction module is provided in each of a plurality of video projectors after a common image source in order to create a large, of several composite sub image, projected image of said image source. The correction module comprises a sequencer ( 1 ), a pixel write control ( 2 ), a parameter storage ( 7 ), a read address generator ( 13 ), a coefficient generator ( 5 ), a scaling generator ( 6 ), an adder ( 8 ), a pixel storage ( 3 ), a vertical mixer ( 9 ), a horizontal mixer ( 10 ) and a look up function means ( 12 ) for correction of differences in the border area of the image of the respective projectors such as geometry correction, soft transition tuning, vignette correction and gamma correction.

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