The ongoing convergence of photogrammetry- and computer
vision-based workflows is now providing powerful tools for geoscience
use (Favalli et al., 2012), enabling automated model production
from flexible image input and with increasing access to
integrated georeferencing and error analysis. The rapidly widening
availability of such software is the motivation for this paper. On that
basis, a typical photo-based reconstruction workflow is described
below and summarized in Fig. 2