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ACTIVITY DETECTOR

  • US 20070292028A1
  • Filed: 08/27/2007
  • Published: 12/20/2007
  • Est. Priority Date: 04/25/2002
  • Status: Active Grant
First Claim
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1. A segmented layered image system, comprising:

  • a mask separator adapted to assign pixels of a document image into at least one of a foreground and a background, the assignment information stored in a binary mask;

    a connected component identifier adapted to identify connected components in or intersecting a region surrounding a pixel;

    a connected component analyzer adapted to determine a quantity of connected components in or intersecting the region surrounding the pixel;

    an activity detector that provides an activity map output based, at least in part, upon the quantity of connected components in or intersecting the region; and

    , an image processor adapted to assign the pixel to one of the background or the foreground based at least in part upon activity map output.

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