I
^I
Symposi
Use of
terresti
Niek Renj
Internationa
ABSTRACT: (
is imagery
pared from
with their
orthophotoc
which are v
ORTHOPHOTOG
Stereo aer
photography
geologist,
under the r
the early
geological
ject (IAEG,
One of t
photography
the image
radial reli
completely
from a phot
tical para!
horizontal
extra work
Orthophot
these probi
ordinary a
correction
scale diffe
jector. Wit
gery of e:
photographi
projection
itional acc
accuracy of
in normal ■
not exceed
orthophotog:
the orthopb
for an engi
able. Ortho
form) scale
geological :
of data fr
extra work
strongly as
be correlati
tures from j
Orthophot«
graphy, but
metric came
photographs
Figure 1
at a scale
of a topogr
10 m are ]
prepared fr
1:22,000.