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Contactless measuring of position and orientation

  • US 20050201610A1
  • Filed: 02/14/2005
  • Published: 09/15/2005
  • Est. Priority Date: 10/22/1998
  • Status: Active Grant
First Claim
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1. A method for contactless or touch-free measurements of a tool or accessories by means of at least one imaging area means and calculation indicating the position and/or orientation of the tool making use of image points on the imaging area means, based on the image points having predetermined mutual positions provided on the tool, imaged onto the imaging area means, and optics presenting the image points on the tool on the imaging area means, the image points being at least three visible within the field of view of the imaging area means at least one being distinctly identifiable, characterized by, in order to measure the position and/or orientation of the tool, providing a number of measuring elements on the tool, each measuring element having a size large enough for making a reconstruction of its form and calculation of at least one image point on the tool related to the measuring element even though a part of it happens to be obscured.

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