Photogrammetry-derived orthoimagery and elevation for Saint Paul, Alaska, collected July 22-25, 2021
The State of Alaska Division of Geological & Geophysical Surveys (DGGS) collected low-altitude aerial images from an unmanned aerial vehicle (UAV) from July 22 to 25, 2021 and used Structure-from-Motion (SfM) photogrammetry to produce digital surface models (DSMs) and orthoimagery of North Beach, Polovina Beach, and …