METHOD AND APPARATUS FOR THREE-DIMENSIONALLY TRANSFORMING TWO-DIMENSIONAL LINEAR DATA IN REAL TIME AND METHOD AND APPARATUS FOR THREE-DIMENSIONALLY VISUALIZING TWO-DIMENSIONAL LINEAR DATA IN REAL TIME

摘要

PROBLEM TO BE SOLVED: To provide a method and an apparatus for three-dimensionally transforming two-dimensional linear data in real time and a method and an apparatus for three-dimensionally visualizing the two-dimensional linear data in real time.

SOLUTION: The method of three-dimensionally transforming two-dimensional linear data in real time includes: a triangle search step for searching triangles in which vertexes constituting the two-dimensional linear data are contained among triangles constituting the three-dimensional topography data; a vertex height calculation step for calculating heights of the vertexes constituting the two-dimensional linear data, by using three-dimensional coordinates of the searched triangles; an intersection point calculation step for calculating the two-dimensional coordinates of intersection points between the triangles constituting the three-dimensional topography data and straight lines constituting the two-dimensional linear data; and an intersection point height calculation step for calculating heights of the intersection points whose two-dimensional coordinates are calculated.

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