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Image processing system, projector, program, information storage medium, and image processing method

  • US 20050041216A1
  • Filed: 07/01/2004
  • Published: 02/24/2005
  • Est. Priority Date: 07/02/2003
  • Status: Active Grant
First Claim
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1. An image processing system comprising:

  • an image projection means for projecting a single-color calibration image formed of an arbitrary single color onto a projection target, and projecting a multi-color calibration image onto the projection target, the multi-color calibration image including a first region and a second region, the first region being in a first single color and smaller than an entire image region and the second region being a region other than the first region and in a second single color, which is a color other than the first single color;

    a sensing means for sensing the single-color calibration image projected onto the projection target to generate first sensing information, and sensing the multi-color calibration image projected onto the projection target to generate second sensing information;

    a projection target region information generation means for generating projection target region information which indicates coordinates of four corners of the projection target in a sensing region of the sensing means based on a difference in image signal value between each pixel based on the first sensing information;

    a projection area information generation means for detecting the first region in the sensing region as a partial projection area based on a difference between the first sensing information and the second sensing information, and generating projection area information which indicates coordinates of four corners of a projection area in the sensing region based on the partial projection area;

    a correction information generation means for generating image distortion correction information based on the projection target region information and the projection area information; and

    a distortion correction means for correcting an image signal so that image distortion is corrected based on the image distortion correction information, wherein the image projection means projects an image based on the image signal corrected by the distortion correction means.

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