<s>
Hugin	B-Application
(	O
)	O
is	O
a	O
cross-platform	O
open	B-Application
source	I-Application
panorama	O
photo	B-Algorithm
stitching	I-Algorithm
and	O
HDR	O
merging	O
program	O
developed	O
by	O
Pablo	O
d'Angelo	O
and	O
others	O
.	O
</s>
<s>
It	O
is	O
a	O
GUI	B-Application
front-end	O
for	O
Helmut	B-Application
Dersch	I-Application
's	O
Panorama	B-Application
Tools	I-Application
and	O
Andrew	O
Mihal	O
's	O
Enblend	B-Language
and	O
Enfuse	B-Language
.	O
</s>
<s>
Stitching	B-Algorithm
is	O
accomplished	O
by	O
using	O
several	O
overlapping	O
photos	O
taken	O
from	O
the	O
same	O
location	O
,	O
and	O
using	O
control	O
points	O
to	O
align	O
and	O
transform	O
the	O
photos	O
so	O
that	O
they	O
can	O
be	O
blended	O
together	O
to	O
form	O
a	O
larger	O
image	O
.	O
</s>
<s>
Hugin	B-Application
allows	O
for	O
the	O
easy	O
(	O
optionally	O
automatic	O
)	O
creation	O
of	O
control	O
points	O
between	O
two	O
images	O
,	O
optimization	O
of	O
the	O
image	O
transforms	O
along	O
with	O
a	O
preview	O
window	O
so	O
the	O
user	O
can	O
see	O
whether	O
the	O
panorama	O
is	O
acceptable	O
.	O
</s>
<s>
With	O
the	O
release	O
of	O
2010.4.0	O
,	O
which	O
includes	O
a	O
built-in	O
control	O
point	O
generator	O
,	O
the	O
developers	O
consider	O
Hugin	B-Application
to	O
be	O
feature-complete	O
.	O
</s>
<s>
The	O
Hugin	B-Application
development	O
is	O
tracked	O
on	O
Launchpad	B-Protocol
and	O
the	O
code	O
resides	O
in	O
a	O
Mercurial	B-Protocol
repository	O
.	O
</s>
<s>
Five	O
projects	O
for	O
the	O
development	O
of	O
Hugin	B-Application
/	O
panotools	B-Application
were	O
accepted	O
for	O
the	O
2007	O
Google	B-Application
Summer	I-Application
of	I-Application
Code	I-Application
.	O
</s>
<s>
Hugin	B-Application
was	O
also	O
accepted	O
to	O
Summer	B-Application
of	I-Application
Code	I-Application
2008	O
.	O
</s>
<s>
In	O
2009	O
Google	B-Application
Summer	I-Application
of	I-Application
Code	I-Application
projects	O
were	O
as	O
follows	O
:	O
</s>
<s>
and	O
fourth	O
project	O
for	O
porting	O
LightTwist	O
to	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
by	O
Yulia	O
Kotseruba	O
,	O
mentored	O
by	O
Sébastien	O
Roy	O
.	O
</s>
<s>
In	O
2010	O
the	O
Google	B-Application
Summer	I-Application
of	I-Application
Code	I-Application
projects	O
were	O
:	O
</s>
<s>
implementing	O
a	O
patent-free	O
image	B-Algorithm
feature	I-Algorithm
detector	I-Algorithm
and	O
control	O
point	O
generator	O
by	O
Antoine	O
Deleforge	O
,	O
mentored	O
by	O
Timothy	O
Nugent	O
.	O
</s>
<s>
In	O
2011	O
the	O
GSoC	B-Application
project	O
was	O
centered	O
around	O
Enblend	B-Language
's	O
seam	O
line	O
optimization	O
algorithm	O
using	O
graph-cut	B-Algorithm
algorithm	I-Algorithm
.	O
</s>
