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Reference grid rectilinear correction

  • US 5,604,601 A
  • Filed: 08/24/1994
  • Issued: 02/18/1997
  • Est. Priority Date: 08/24/1994
  • Status: Expired due to Fees
First Claim
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1. A scanner for copying an image from substrate comprising:

  • a scanning means for sensing the substrate image and a reference grid disposed proximate to the substrate;

    transport means for moving the substrate and reference grid relative to the scanning means;

    means for interpreting a sensed portion of the reference grid as a position and associating the position with a contemporaneously sensed raw scan line of the image; and

    means for processing sensed pixels in raw scan lines to processed pixels at a chosen spacing in an image buffer according to the positions associated with the raw scan image buffer lines, wherein several sensed pixels are weighted together to calculate a processed pixel.

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