<s>
Luminance	B-Application
HDR	I-Application
,	O
formerly	O
Qtpfsgui	B-Application
,	O
is	O
graphics	B-Application
software	I-Application
used	O
for	O
the	O
creation	O
and	O
manipulation	O
of	O
high-dynamic-range	O
images	O
.	O
</s>
<s>
Released	O
under	O
the	O
terms	O
of	O
the	O
GPL	B-License
,	O
it	O
is	O
available	O
for	O
Linux	B-Application
,	O
Windows	B-Application
and	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
(	O
Intel	O
only	O
)	O
.	O
</s>
<s>
Luminance	B-Application
HDR	I-Application
supports	O
several	O
High	O
Dynamic	O
Range	O
(	O
HDR	O
)	O
as	O
well	O
as	O
Low	O
Dynamic	O
Range	O
(	O
LDR	O
)	O
file	O
formats	O
.	O
</s>
<s>
Prerequisite	O
of	O
HDR	O
photography	O
are	O
several	O
narrow-range	O
digital	B-Algorithm
images	I-Algorithm
with	O
different	O
exposures	O
.	O
</s>
<s>
Luminance	B-Application
HDR	I-Application
combines	O
these	O
images	O
and	O
calculates	O
a	O
high-contrast	O
image	O
.	O
</s>
<s>
In	O
order	O
to	O
view	O
this	O
image	O
on	O
a	O
regular	O
computer	O
monitor	O
,	O
Luminance	B-Application
HDR	I-Application
can	O
convert	O
it	O
into	O
a	O
displayable	O
LDR	O
image	O
format	O
using	O
a	O
variety	O
of	O
methods	O
,	O
such	O
as	O
tone	B-Language
mapping	I-Language
.	O
</s>
<s>
Currently	O
fifteen	O
different	O
tone	B-Language
mapping	I-Language
operators	I-Language
(	O
algorithms	O
)	O
are	O
available	O
,	O
each	O
one	O
with	O
its	O
tunable	O
parameters	O
.	O
</s>
<s>
Different	O
image	B-Algorithm
processing	I-Algorithm
techniques	O
can	O
be	O
applied	O
to	O
the	O
generated	O
HDR	O
images	O
,	O
such	O
as	O
resizing	O
,	O
cropping	O
,	O
rotating	O
and	O
a	O
number	O
of	O
projective	B-Algorithm
transformations	I-Algorithm
.	O
</s>
<s>
The	O
software	O
also	O
provides	O
batch	B-General_Concept
processing	I-General_Concept
functionality	O
for	O
creating	O
HDR	O
images	O
and	O
for	O
tone	B-Language
mapping	I-Language
them	O
in	O
a	O
non-interactive	O
way	O
.	O
</s>
<s>
For	O
users	O
who	O
prefers	O
the	O
command	B-Application
line	I-Application
,	O
a	O
non-GUI	O
,	O
non-graphical	O
interface	O
is	O
also	O
available	O
on	O
all	O
supported	O
platforms	O
.	O
</s>
<s>
In	O
the	O
case	O
of	O
image	O
data	O
that	O
does	O
not	O
align	O
exactly	O
,	O
an	O
automatic	O
alignment	O
can	O
be	O
performed	O
using	O
a	O
tool	O
provided	O
by	O
the	O
Hugin	B-Application
project	O
.	O
</s>
<s>
HDR	O
images	O
are	O
images	O
with	O
a	O
high	O
dynamic	O
range	O
and	O
,	O
using	O
Luminance	B-Application
HDR	I-Application
,	O
they	O
can	O
be	O
created	O
as	O
well	O
as	O
edited	O
.	O
</s>
<s>
Luminance	B-Application
HDR	I-Application
can	O
create	O
an	O
HDR	O
image	O
from	O
several	O
LDR	O
images	O
and	O
tonemap	O
an	O
HDR	O
into	O
an	O
LDR	O
.	O
</s>
