SURVEYING METHOD USING THREE-DIMENSIONAL PHOTOGRAMMETRY TECHNIQUE

摘要

PROBLEM TO BE SOLVED: To provide a method for measuring the surface shape of a rut, or the like on a road by using a three-dimensional photogrammetry technique.;SOLUTION: In a measurement field, first at least three pieces of reference point equipment for supporting a reference point are installed on a road surface whose shape is measured, and the distance between the reference points is measured. Then, the height of the reference points is adjusted so that the altitudes of the reference points become the same. Further, a plurality of points to be measured are marked on the road surface. Then, photos, where all reference points and all points to be measured are photographed, are photographed from a plurality of directions. After that, the pictures are captured into a computer as image data, a reference point projected to each image data and a point to be measured are equal and are mapped each other, and the coordinates of each point to be measured are calculated by arithmetic processing using information on the distance between reference points and the mapping information.;COPYRIGHT: (C)2005,JPO&NCIPI