<s>
Visual	B-Application
Nature	I-Application
Studio	I-Application
is	O
a	O
3D	O
visualization	O
program	O
for	O
Microsoft	B-Application
Windows	I-Application
,	O
developed	O
as	O
an	O
enhanced	O
version	O
of	O
3D	O
Nature	O
's	O
"	O
World	B-Application
Construction	I-Application
Set	I-Application
"	O
software	O
.	O
</s>
<s>
The	O
program	O
produces	O
photorealistic	O
still	O
images	O
or	O
animations	O
of	O
fictional	O
or	O
real	O
landscapes	O
by	O
using	O
digital	B-Application
elevation	I-Application
model	I-Application
(	O
DEM	O
)	O
and	O
geographic	B-Application
information	I-Application
system	I-Application
(	O
GIS	B-Application
)	O
data	O
as	O
input	O
.	O
</s>
<s>
In	O
late	O
2015	O
,	O
Visual	B-Application
Nature	I-Application
Studio	I-Application
was	O
acquired	O
along	O
with	O
all	O
of	O
3D	O
Nature	O
's	O
other	O
assets	O
by	O
,	O
another	O
company	O
founded	O
by	O
3D	O
Nature	O
co-founder	O
Chris	O
'	O
Xenon	O
 '	O
Hanson	O
.	O
</s>
<s>
AlphaPixel	O
continues	O
to	O
sell	O
and	O
support	O
Visual	B-Application
Nature	I-Application
Studio	I-Application
commercially	O
under	O
the	O
3D	O
Nature	O
brand	O
but	O
has	O
also	O
released	O
the	O
source	O
code	O
under	O
the	O
OSGPL	O
(	O
a	O
variant	O
of	O
the	O
LGPL	B-Application
)	O
to	O
ensure	O
the	O
software	O
cannot	O
be	O
lost	O
in	O
the	O
future	O
and	O
protect	O
the	O
investment	O
of	O
its	O
users	O
.	O
</s>
