| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method and a device, capable of precisely obtaining the distribution of surface displacement in easy and quick manner for an object of measurement with a low cost, and capable of freely selecting a measuring point for the measuring subject such as a rock bed, even at a place where a conventional device is difficult to be installed, or a subject to which a person cannot approach. <P>SOLUTION: The displacement measuring method is one in which the measuring subject including each reference measuring point is photographed from a plurality of positions, before and after the displacement of the subject respectively, thereby obtaining a plurality of photographed images, then calculating the 3-D coordinates of arbitrary displacement measuring point respectively, and obtaining its displacement, based on coordinates of the reference measuring points on the photographed images, before and after the displacement. <P>COPYRIGHT: (C)2004,JPO |
