<s>
Drishti	B-Language
(	O
from	O
Sanskrit	O
दृष्टि	O
dr̥ṣţi	O
,	O
meaning	O
"	O
vision	O
"	O
or	O
"	O
insight	O
"	O
)	O
is	O
a	O
multi-platform	O
,	O
open-source	B-Application
volume-exploration	O
and	O
presentation	O
tool	O
.	O
</s>
<s>
Written	O
for	O
visualizing	O
tomography	B-Algorithm
data	O
,	O
electron-microscopy	O
data	O
and	O
the	O
like	O
,	O
it	O
aims	O
to	O
ease	O
understanding	O
of	O
data	O
sets	O
and	O
to	O
assist	O
with	O
conveying	O
that	O
understanding	O
to	O
the	O
research	O
community	O
or	O
to	O
lay	O
persons	O
.	O
</s>
<s>
From	O
the	O
website	O
:	O
"	O
The	O
central	O
idea	O
about	O
Drishti	B-Language
is	O
that	O
the	O
scientists	O
should	O
be	O
able	O
to	O
use	O
it	O
for	O
exploring	O
volumetric	O
datasets	O
as	O
well	O
as	O
use	O
it	O
in	O
presentations.	O
"	O
</s>
<s>
The	O
Commonwealth	O
Scientific	O
and	O
Industrial	O
Research	O
Organisation	O
(	O
CSIRO	O
)	O
in	O
Australia	O
has	O
used	O
Drishti	B-Language
for	O
a	O
number	O
of	O
purposes	O
,	O
such	O
as	O
volumetric	O
visualisation	O
of	O
various	O
computer-tomography	O
datasets	O
.	O
</s>
<s>
Among	O
other	O
software	O
,	O
Drishti	B-Language
uses	O
Qt	B-Language
for	O
the	O
GUI	O
widgets	O
and	O
OpenGL	O
Extension	O
Wrangler	O
Library	O
(	O
GLEW	O
)	O
.	O
</s>
<s>
Drishti	B-Language
provides	O
a	O
number	O
of	O
features	O
that	O
would	O
otherwise	O
require	O
several	O
proprietary	O
volume	O
visualisation	O
programs	O
or	O
that	O
are	O
simply	O
not	O
available	O
together	O
in	O
other	O
software	O
:	O
</s>
<s>
2D	O
Transfer	O
functions	O
(	O
or	O
Lookup	B-Data_Structure
tables	I-Data_Structure
)	O
:	O
In	O
addition	O
to	O
,	O
or	O
instead	O
of	O
thresholding	O
,	O
Drishti	B-Language
allows	O
the	O
user	O
to	O
apply	O
transfer	O
functions	O
across	O
"	O
density	O
"	O
or	O
"	O
value	O
"	O
as	O
well	O
as	O
gradient	O
.	O
</s>
<s>
clipping	B-Algorithm
:	O
removing	O
some	O
spatial	O
region	O
from	O
a	O
dataset	O
.	O
</s>
<s>
Importing	O
DICOM	O
image	O
stack	O
in	O
addition	O
to	O
the	O
current	O
raw	O
and	O
processed	O
(	O
netCDF	B-Application
)	O
volume	O
file	O
formats	O
.	O
</s>
