ISPRS
a Cl
b IGÍ
d B
KEY V
ABSTF
Followi
databas*
in three
Quality
better tl
Referen
take ad
satellite
Spot In
processi
referenc
modelin
matchin
Referen
algorith
SPOT ii
Ortho-r<
issue fc
rectifica
geo-refe
process
of grour
images)
of ortho
Referent
been des
SPOT5
database
arc.seco
Orthoim
with a
than 16
better th
The At
leverage
images i
called "