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[IV-24] Ground photogrammetry in a cedar forest using aerial photogrammetry with UAV

〇SHOSAKU OTONARI¹, HIROSHI WATANABE¹, SHIMOZUMA TATSUYA¹ (1.Fukuoka University)

Keywords:UAV, SfM

In the case of photogrammetry, it is generally used to survey the gound control point at a total station or GNSS. The accuracy is expected to be improved by setting up GCPs throughout the area where photogrammetry is to be conducted.However, it is difficult to receive GNSS in the forest because of the difficulty of receiving GNSS in the forest due to the trees covering the sky above, and also because the work is done on a slope with poor footing. In this study, the accuracy of aerial photogrammetry with a UAV is examined to reduce the work in the cedar forest and to save labor.