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Restoration filter for truncated pixels

  • US 5,699,079 A
  • Filed: 11/21/1995
  • Issued: 12/16/1997
  • Est. Priority Date: 11/21/1995
  • Status: Expired due to Term
First Claim
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1. In a computer graphics system having a graphics processor for computing a pixel to be displayed and a frame buffer for storing a truncated portion of the pixel to be displayed, a method for restoring the pixel to be displayed prior to display, the method comprising the steps of:

  • shifting the truncated portion of the pixel to be displayed to the left by one or more bits thereby creating a truncated shifted pixel;

    comparing the truncated portion of the pixel to be displayed to a neighboring pixel of the pixel to be displayed;

    incrementing said truncated shifted pixel where a value of said neighboring pixel is greater than a value of the pixel to be displayed; and

    decrementing said truncated shifted pixel where a value of said neighboring pixel is less than a value of the pixel to be displayed.

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