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Scanning and capturing digital images using residue detection

  • US 8,441,702 B2
  • Filed: 11/24/2009
  • Issued: 05/14/2013
  • Est. Priority Date: 11/24/2009
  • Status: Active Grant
First Claim
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1. A computer implemented method for scanning a document, the computer implemented method comprising:

  • detecting a document placed on a scanning surface of a scanning device;

    detecting a residue deposited on the document;

    determining a portion of the document to be scanned based on a location of the residue on the document; and

    scanning the portion of the document;

    wherein determining a portion of the document to be scanned based on a location of the residue on the document further comprises;

    determining whether the residue on the document forms an enclosed area;

    responsive to determining that the residue of the document forms an enclosed area, determining the portion of the document to be scanned using the enclosed area; and

    responsive to determining that the residue of the document does not form an enclosed area, determining the portion of the document to be scanned using a proximity algorithm, wherein the proximity algorithm specifies that the portion of the document to be scanned is located outside of a particular circumference of the residue using a virtual polygon that is formed using the unenclosed area to define the particular circumference.

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