<s>
Voreen	B-Language
(	O
volume	O
rendering	O
engine	O
)	O
is	O
an	O
open-source	B-Application
volume	O
visualization	O
library	O
and	O
development	O
platform	O
.	O
</s>
<s>
Through	O
the	O
use	O
of	O
GPU-based	O
volume	O
rendering	O
techniques	O
it	O
allows	O
high	O
frame	O
rates	O
on	O
standard	O
graphics	O
hardware	O
to	O
support	O
interactive	O
volume	O
exploration	O
.	O
</s>
<s>
GNU	B-License
general	I-License
public	I-License
license	I-License
(	O
GPL	B-License
)	O
.	O
</s>
<s>
It	O
is	O
platform	B-Operating_System
independent	I-Operating_System
and	O
compiles	O
on	O
Windows	O
and	O
Linux	B-Application
.	O
</s>
<s>
The	O
source	O
code	O
and	O
documentation	O
,	O
and	O
also	O
pre-compiled	O
binaries	O
for	O
Windows	O
and	O
Linux	B-Application
,	O
are	O
available	O
from	O
its	O
website	O
.	O
</s>
<s>
and	O
performing	O
interactive	B-General_Concept
visualizations	I-General_Concept
of	O
volumetric	O
data	O
.	O
</s>
