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Methods and systems for automatic detection of corners of a region

  • US 7,406,196 B2
  • Filed: 03/19/2004
  • Issued: 07/29/2008
  • Est. Priority Date: 03/19/2004
  • Status: Expired due to Fees
First Claim
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1. A method for detecting corners of a region, the method comprising the steps of:

  • Establishing a region of interest bounded by characteristic edge points;

    detecting edges interior to the region of interest;

    culling the detected edges in order to obtain a reduced edge group from the detected edges, the reduced edge group comprising a plurality of points;

    selecting a plurality of candidate corner points based on a measure of cornerness obtained from the plurality of points; and

    detecting region corner points from the plurality of candidate corner points based on a predetermined relationship between each of the candidate corner points and the characteristic edge points of the region of interest.

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