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Method of correcting for distortion of projected image, distortion correcting program used in same method, and projection-type image display device

  • US 20030210381A1
  • Filed: 05/07/2003
  • Published: 11/13/2003
  • Est. Priority Date: 05/10/2002
  • Status: Abandoned Application
First Claim
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1. A method for correcting for distortion of a projected image caused by projecting an image with a projection optical axis being tilted from normal to a screen, said method comprising:

  • a first step of moving a pointer on said screen according to operations of an operator, of sequentially displaying correction reference points corresponding to correction points for said projected image and being designated by operations of said operator on said screen, and then of displaying a correction contour frame on said screen, wherein said correction contour frame is obtained by connecting at least two being adjacent to each other out of said correction reference points;

    a second step of determining said correction contour frame according to an instruction for determining said correction contour frame from said operator and of calculating a correction parameter according to a distance between each of said correction points for said projected image and said correction reference points of said correction contour frame corresponding to each of said correction points; and

    a third step of correcting for said distortions of said projected image based on said correction parameter.

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