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Method and system for reducing gray scale discontinuities in contrast enhancing screens affected by ambient light

  • US 20050179706A1
  • Filed: 02/18/2004
  • Published: 08/18/2005
  • Est. Priority Date: 02/18/2004
  • Status: Active Grant
First Claim
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1. A method of reducing a gray scale discontinuity between pixel locations in a blackened state on a contrast enhancing screen and pixel locations in a gradual shading region of an image displayed by a projector on said contrast enhancing screen, said discontinuity caused by ambient light, said method comprising:

  • measuring an intensity of said ambient light;

    comparing said measured ambient light intensity to an average intensity of light projected by said projector onto said gradual shading region; and

    generating apparent gray scale levels for pixels to be displayed in said pixel locations in said gradual shading region based on said comparison.

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