| 摘要 |
<P>PROBLEM TO BE SOLVED: To measure or continuously monitor an object to be measured such as a civil engineering structure or a building structure, easily with high accuracy using single image data, without requiring large-scale facilities or manpowers. <P>SOLUTION: A first target 40 wherein a position relationship between each fixed target mark 42 is known, and a different second target 50 are arranged on a structure 70 such as a civil engineering structure or a building structure, independently across a boundary of a crack 71 or the like existing on the structure 70, and image data 30 acquired by photographing an image thereof by a digital camera 90 from an optional position and a direction are input into an information processing device 10 and processed by a measuring program 20, to thereby measure a distance ΔL between the first target 40 and the second target 50 in a non-contact state to the structure 70 or the like from the single image data 30. <P>COPYRIGHT: (C)2011,JPO&INPIT |
