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Method and apparatus for three-dimensionally transforming two-dimensional linear data in accordance with three-dimensional topography data in real time and method and apparatus for three-dimensionally visualizing two-dimensional linear data together with three-dimensional topography data in real time

  • US 20060129320A1
  • Filed: 08/10/2005
  • Published: 06/15/2006
  • Est. Priority Date: 12/14/2004
  • Status: Active Grant
First Claim
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1. A method of three-dimensionally transforming two-dimensional linear data in accordance with three-dimensional topography data in real time, comprising:

  • searching triangles in which vertexes constituting the two-dimensional linear data are contained among triangles constituting the three-dimensional topography data;

    calculating heights of the vertexes by using three-dimensional coordinates of the searched triangles;

    calculating intersection points between the triangles constituting the three-dimensional topography data and straight lines constituting the two-dimensional linear data; and

    calculating heights of the calculated intersection points.

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