Photogrammetry method using unmanned aircraft and photogrammetry system using unmanned aircraft

摘要

PROBLEM TO BE SOLVED: To efficiently and accurately perform photogrammetry using an unmanned flying object. SOLUTION: A photogrammetry system 10 takes a plurality of images including a survey target area in a created site by a camera 120 mounted on an unmanned air vehicle 12, and based on the obtained plurality of images, surveys with a computer 14. A three-dimensional model of the target area is generated and topographical data is calculated. When an image is taken by the unmanned flying object 12, the shooting direction of the camera 120 is tilted at a predetermined angle, for example, 10 ° or more and 30 ° or less with respect to the vertically downward direction. [Selection diagram] Fig. 3