Anette Eltner

TL;DR: In this article, the authors present a review of the state of the art on using Structure-from-Motion (SfM) workflows in geomorphometry and give an overview of terms and fields of application.

TL;DR: In this paper, high-resolution aerial imagery acquired by an UAV is used to automatically generate precise digital surface models (DSMs) of high spatial resolution by applying structure-from-motion image processing tools.

TL;DR: In this paper, a robust survey and reporting of structure-from-motion (SfM) photogrammetry results is proposed, which is supported by appropriate survey design, applying suitable statistics to identify systematic error (bias) and to estimate precision within results, and propagating uncertainty estimates into the final data products.

TL;DR: In this paper, an approach for the synergetic utilisation of UAV and terrestrial images for high resolution 3D model generation is introduced, where terrestrial images can be acquired spontaneously and flexibly depending on the encountered terrain conditions to supplement UAV data.

TL;DR: A comparison between DEMs of a soil surface generated from UAV images and terrestrial laser-scanning data show that natural surfaces can be very accurately reconstructed from Uav images, even when GCPs are missing and simple geometric camera models are considered.