DISPLACEMENT OR STRAIN CALCULATING PROGRAM, AND DISPLACEMENT OR STRAIN MEASURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a displacement or strain calculating program and a displacement or strain measuring method that can solve a problem with the prior art so that calculation time for matching images before and after deformation of a concrete structure can significantly be reduced compared to the prior art.;SOLUTION: A displacement or strain calculating program is a program to instruct a computer to execute processes to determine a strain of an object by comparing images before and after deformation of the object, and is provided with functions to instruct the computer to execute a pre-deformation characteristic point recognition process, a subset preparation process, a post-deformation characteristic point recognition process, a characteristic point displacement calculation process, a post-deformation gauge point interpolation process, a search area setting process, a subset-equivalent area searching process, and a displacement or strain calculation process. Of these processes, the post-deformation gauge point interpolation process is to interpolate a gauge point in a deformed image on the basis of displacement of three or more characteristic points.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT