HIGH-PRECISION RELIEF MAP PRODUCTION SYSTEM AND HIGH-PRECISION RELIEF MAP GENERATION PROCESS

摘要

PROBLEM TO BE SOLVED: To provide a high-precision relief map production system capable of producing a high-precision relief map of an arbitrary area from numerical map data at a low cost in a short period of time.;SOLUTION: The high-precision relief map production system produces the relief map by converting the numerical map data to STL data and inputting the STL data to an optical shaping device. In performing automatic conversion processing by a computer to the STL data from the numerical map data, a horizontal plane is set within a production range of the relief map; a lattice point which is a base point and three lattice points adjacent to the lattice point are set on the horizontal plane; an altitude at each lattice point is read in from a numerical map CD-ROM and new four lattice points are set upward distant the above altitude from each lattice point; a quadrilateral constituted by the four lattice points is divided by diagonals to two triangles; the assembly of the divided triangles is converted into the STL data and the relief map is shaped by inputting the STL data to the optical shaping device.;COPYRIGHT: (C)2006,JPO&NCIPI