APPLYING STRUCTURE FROM MOTION (SFM) TO ALASKA REGION NPS NATURAL RESOURCES ON MULTIPLE SCALES

Within the last ten years, photogrammetry has emerged not only as an option to create 3-dimensional digital models of objects and artifacts, but also as an affordable method for producing terrestrial and landscape-scale models. Alaska is home to rich geological, archaeological, and historical resources, many found within the extremely diverse National Park Service (NPS) units. This project uses the photogrammetric method of Structure from Motion (SfM) on three different scales (object, terrestrial, and landscape) to document park resources and increase the public’s access to these resources.

Archaeological and paleontological artifacts curated in the NPS regional office were modeled using a computer-controlled turntable and DSLR camera, making them accessible to the public via a digital collection. The toe of Exit Glacier in Kenai Fjords National Park was modeled at a terrestrial scale from photos taken on foot as part of a comparison to the SfM model of the same area created from aerial photos. Landscape models of coastlines in Katmai and Lake Clark National Parks were created as part of an environmental evaluation of nearshore and intertidal ecological communities and habitats.

Due to the scalability, affordability, and versatility of SfM, the technology should continue to be adopted within the NPS with creative and varied uses. In Alaska, the difficult terrain and remoteness of Alaska National Parks are barriers to access for most people, so 3D modeling of fossils and other artifacts from the parks provides virtual access to the rich natural resources of the parks. These SfM projects have resulted in quality products that have been used to educate the public about Alaska National Park resources and to aid in NPS scientific endeavors.