The methods used have some inherent differences. LPS and
Photoscan create and use a 2.5D and a 3D model respectively,
from matched points to differentially rectify the photos. The
proposed methodology directly projects the dense color point
cloud on the projection plane in order to produce the orthophoto
without the need to calculate a surface. As explained
previously, rectification processes performs best in flat surfaces
while in complex geometry the result is poor and full of smears
and stretches. In terms of visual interpretation and image
quality