Elevation data generation method and altitude data generation program

摘要

PROBLEM TO BE SOLVED: To generate altitude data with respect to lattice points near a step region such as precipice, and also generate the altitude data obtained by correcting the altitude of the lattice points near the step region by using the altitudes of triangulation points and the control points.;SOLUTION: A plurality of proximity points which are located on altitude lines or the step region and satisfies prescribed conditions are detected for each lattice point and, concerning the first kind of lattice points that do not contain the proximity points on the step region among the detected plurality of proximity points, the altitudes of the lattice points are determined based on the locations and altitudes of the plurality of proximity points. Concerning the second kind of lattice points that contain the proximity points on the step region among a plurality of the proximity points, at least another proximity point which satisfies other prescribed conditions is additionally detected and the altitude of the selected lattice point is determined based on the location and the altitude of the at least the other proximity point which is additionally added. Furthermore, the altitudes determined concerning the triangulation points and the lattice points near the control points are corrected based on the altitudes of the triangulation points and the control points.;COPYRIGHT: (C)2005,JPO&NCIPI