<s>
Vizerra	B-Protocol
is	O
a	O
software	O
platform	O
for	O
viewing	O
3D	O
models	O
which	O
provides	O
its	O
user	O
with	O
integrated	O
additional	O
content	O
,	O
such	O
as	O
video	O
guides	O
.	O
</s>
<s>
It	O
was	O
chosen	O
because	O
Vizerra	B-Protocol
project	O
began	O
as	O
a	O
platform	O
for	O
virtual	B-Application
travel	O
.	O
</s>
<s>
At	O
the	O
moment	O
Vizerra	B-Protocol
is	O
primarily	O
a	O
library	O
of	O
virtual	B-Application
3D	O
copies	O
of	O
real	O
sites	O
.	O
</s>
<s>
The	O
first	O
version	O
of	O
Vizerra	B-Protocol
client	O
application	O
user	B-Application
interface	I-Application
was	O
made	O
by	O
Art	O
.	O
</s>
<s>
Vizerra	B-Protocol
uses	O
the	O
following	O
technologies	O
:	O
</s>
<s>
Umbra	O
by	O
Umbra	O
Software	O
Ltd.	O
;	O
Wwise	B-Application
(	O
WaveWorks	O
Interactive	O
Sound	O
Engine	O
)	O
by	O
Audiokinetic	O
Inc	O
;	O
SpeedTree	B-General_Concept
by	O
Interactive	O
Data	O
Visualization	O
,	O
Inc.	O
;	O
Simplygon	O
by	O
Donya	O
Labs	O
AB	O
;	O
PhysX	B-Operating_System
by	O
Nvidia	O
Corporation	O
;	O
DirectX	B-Application
by	O
Microsoft	O
,	O
Gamebryo	O
Lightspeed	B-Application
game	O
engine	O
from	O
Emergent	O
(	O
previously	O
NetImmerse	O
Engine	O
)	O
and	O
others	O
.	O
</s>
