Pseudo one pass thinning algorithm

  • Authors:
  • Pavan Kumar;Deepak Bhatnagar;P.S. Umapathi Rao

  • Affiliations:
  • -;-;-

  • Venue:
  • Pattern Recognition Letters
  • Year:
  • 1991

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Abstract

A One Pass Thinning Algorithm (OPTA) and a Pseudo One Pass Thinning Algorithm (POPTA) are proposed in this paper. The one pass thinning algorithm uses the concept of thinning and restoring. The OPTA deletes pixels from North, South, East, and West in one pass. The POPTA uses an additional concept of corner pixels, which detects the corner pixels and deletes them to yield better skeletons with little or no distortion. Experimental results show that each of the patterns is thinned to a skeleton of unit pixel width, with no loss of connectivity or distortion. The algorithms are width independent and work for both even pixel wide and odd pixel wide images.