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Method and apparatus for establishing a positioning reference frame for a surface having hidden features where the reference frame is aligned to one or more of the hidden features

  • US 20050097765A1
  • Filed: 11/05/2004
  • Published: 05/12/2005
  • Est. Priority Date: 11/07/2003
  • Status: Abandoned Application
First Claim
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1. A method for establishing a positioning reference frame for a surface having one or more hidden features where the hidden features are detectable by way of machine-aided sensing, the method comprising:

  • (a) providing a guiding frame of predefined geometry, proximate to the surface, where the proximity is such that machine-aided sensing can be used to detect and locate one or more of the hidden features, where one or more sensor modules is attached to the guiding frame and at least a first of the sensor modules is movable along the guiding frame and provides machine-aided sensing for detecting and locating a corresponding first of the hidden features;

    (b) moving one of the first sensor module and guiding frame relative to one another so that the moved one of the first sensor module and guiding frame becomes aligned at least to the first hidden feature by an orientation that is defined by the first sensor module being at a corresponding first position along the guiding frame when the first sensor module detects and locates the corresponding first hidden feature; and

    (c) using the guiding frame after the frame has become aligned at least to the first hidden feature for locating further positions on the surface that are spaced apart according to predetermined distances and/or orientations relative to one another and relative to the aligned guiding frame.

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