Matching a statistical pressure snake to a four-sided polygon and estimating the polygon corners.

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Description

Given a video image source, a statistical pressure snake is able to track a color target in real time. This report presents an algorithm that exploits the one-dimensional nature of the visual snake target outline. If the target resembles a four-sided polygon, then the four polygon sides are identified by mapping all image snake point coordinates into Hough space where lines become points. After establishing that four dominant lines are present in snake contour, the polygon corner points are estimated. The computation burden of this algorithm is of the N logN type. The advantage of this method is that it ... continued below

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22 p.

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Schaub, Hanspeter (ORION International Technologies, Albuquerque, NM) & Wilson, Chris C. May 1, 2004.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 21 times . More information about this report can be viewed below.

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Description

Given a video image source, a statistical pressure snake is able to track a color target in real time. This report presents an algorithm that exploits the one-dimensional nature of the visual snake target outline. If the target resembles a four-sided polygon, then the four polygon sides are identified by mapping all image snake point coordinates into Hough space where lines become points. After establishing that four dominant lines are present in snake contour, the polygon corner points are estimated. The computation burden of this algorithm is of the N logN type. The advantage of this method is that it can provide real-time target corner estimates, even if the corners themselves might be occluded.

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22 p.

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  • Report No.: SAND2004-1871
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/974881 | External Link
  • Office of Scientific & Technical Information Report Number: 974881
  • Archival Resource Key: ark:/67531/metadc932308

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • May 1, 2004

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

Description Last Updated

  • Dec. 6, 2016, 1:03 p.m.

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Schaub, Hanspeter (ORION International Technologies, Albuquerque, NM) & Wilson, Chris C. Matching a statistical pressure snake to a four-sided polygon and estimating the polygon corners., report, May 1, 2004; United States. (digital.library.unt.edu/ark:/67531/metadc932308/: accessed June 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.