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Method and apparatus for automatically fitting an input image to the size of the output document

  • US 5,796,877 A
  • Filed: 12/11/1995
  • Issued: 08/18/1998
  • Est. Priority Date: 12/11/1995
  • Status: Expired due to Term
First Claim
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1. A method for automatically fitting an image of an input document onto an output document, comprising the steps of:

  • (a) scanning a predetermined portion of the input document;

    (b) generating pixels of image data from scanning the predetermined portion of the input document;

    (c) generating a background value from the pixels of image data corresponding to the predetermined portion of the input document;

    (d) scanning a remaining portion of the input document(e) generating pixels of image data from scanning the remaining portion of the input document;

    (f) comparing a reflectance value of the pixels of image data corresponding to the remaining portion of the input document with a predetermined threshold value corresponding to the generated background value;

    (g) identifying a pixel of image data as a pixel corresponding to an image when the reflectance value of the pixel of image data is less than the predetermined threshold;

    (h) establishing a single image area based the pixels corresponding to the image so as to identify and isolate the image on the input document;

    (i) determining a size of the single image area;

    (j) determining a size of the output document;

    (k) scaling only the single image area to correspond to the size of the output document; and

    (l) rendering the scaled image area on the output document.

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