2.2. Photogrammetric processing software
Several conventional photogrammetric software packages can
process UAV imagery. However, new packages have been developed
that bring together knowledge from computer vision and traditional
photogrammetry and are more dedicated to the processing
of UAV image data. These packages use an approach commonly
called ‘‘structure from motion’’ (Snavely et al., 2007). Some of these
packages are free and open-source, such as Bundler and CMVS
(Furukawa and Ponce, 2010) or Apero and Mic-Mac