As of spring 2014, there are more than 40
different computer programs available that are
capable of creati ng photo grammetr ic models
(e.g.,see.https://en.wikipedia.org/wiki/Compari
son of photogrammetry software). Cost-free
programs include VisualSFM (Wu, 2007, 2011;
Wu et al., 2011) and Autodesk's 123D Catch
(however, the latter can be used free of
charge, but the fine print says that Autodesk
actually owns any scans you make and can use
it for a wide variety of purposes, including
marketing). We present our examples with the
commercial software Agisoft Photoscan
Professional (www.agisoft.ru), which we believe
to currently be one of the most user-friendly
programs for photogrammetry. However, it
must be noted that Photoscan Pro offers
comparatively little options for user control. In
the context of the methods presented here, this
limitation does not matter, as we expect
readers to be able to produce photographs that
do not result in the necessity to fine-tune and
tweak the program input. If, however, older
photographs without EXIF data or other
problematic data sets are to be used, other
programs may be better suited to the task.