THREE-DIMENSIONAL POSITION MEASUREMENT METHOD, SURVEYING METHOD, SURFACE SPECIFICATION METHOD, THREE-DIMENSIONAL POSITION MEASUREMENT APPARATUS, AND THREE-DIMENSIONAL POSITION MEASUREMENT PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a three-dimensional position measurement method capable of identifying a position of a measurement object present in a range where an operator cannot reach.;SOLUTION: A three-dimensional position measurement method includes the steps of: setting three markers M on a wall surface A and setting markers M on wall surfaces B-D, a ceiling surface E and a floor surface F; capturing a panoramic image using an imaging apparatus 30; detecting two-dimensional positions of the markers M on the panoramic image; calculating three-dimensional positions of the markers M from the two-dimensional positions of the markers on the panoramic image; specifying the wall surface A from the three-dimensional positions of the markers M on the wall surface A; specifying the surfaces B-F from normal vectors of the wall surfaces A and the three-dimensional positions of the markers M on the surfaces B-F; acquiring the two-dimensional position of a measurement point P on the panoramic image; specifying a straight line from the imaging apparatus 30 to the measurement point P on the basis of the two-dimensional position of the measurement point P; and calculating a position of an intersection point of any of the surfaces A-F and the straight line as the three-dimensional position of the measurement point P.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT