<s>
Unmanned	B-General_Concept
aerial	I-General_Concept
photogrammetric	I-General_Concept
survey	I-General_Concept
is	O
the	O
use	O
of	O
unmanned	O
aerial	O
vehicles	O
(	O
UAVs	O
)	O
to	O
take	O
photos	O
for	O
use	O
in	O
photogrammetry	B-Application
,	O
the	O
science	O
of	O
making	O
measurements	O
from	O
photographs	O
.	O
</s>
<s>
These	O
detailed	O
point	O
clouds	O
(	O
of	O
various	O
types	O
of	O
data	O
)	O
could	O
be	O
used	O
in	O
line	O
with	O
orthophotos	B-General_Concept
etc	O
.	O
</s>
<s>
Similarly	O
to	O
manned	O
aerial	O
surveys	O
,	O
UAVs	O
are	O
suitable	O
to	O
acquire	O
three-dimensional	O
digital	O
models	O
and	O
orthophoto	B-General_Concept
mosaics	O
for	O
a	O
certain	O
area	O
.	O
</s>
