<s>
MeshLab	B-Language
is	O
a	O
3D	B-Algorithm
mesh	I-Algorithm
processing	O
software	O
system	O
that	O
is	O
oriented	O
to	O
the	O
management	O
and	O
processing	O
of	O
unstructured	O
large	O
meshes	B-Algorithm
and	O
provides	O
a	O
set	O
of	O
tools	O
for	O
editing	O
,	O
cleaning	O
,	O
healing	O
,	O
inspecting	O
,	O
rendering	O
,	O
and	O
converting	O
these	O
kinds	O
of	O
meshes	B-Algorithm
.	O
</s>
<s>
MeshLab	B-Language
is	O
free	B-License
and	I-License
open-source	I-License
software	I-License
,	O
subject	O
to	O
the	O
requirements	O
of	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
(	O
GPL	B-License
)	O
,	O
version	O
2	O
or	O
later	O
,	O
and	O
is	O
used	O
as	O
both	O
a	O
complete	O
package	O
and	O
a	O
library	B-Library
powering	O
other	O
software	O
.	O
</s>
<s>
MeshLab	B-Language
is	O
developed	O
by	O
the	O
ISTI	O
-	O
CNR	O
research	O
center	O
;	O
initially	O
MeshLab	B-Language
was	O
created	O
as	O
a	O
course	O
assignment	O
at	O
the	O
University	O
of	O
Pisa	O
in	O
late	O
2005	O
.	O
</s>
<s>
It	O
is	O
a	O
general-purpose	O
system	O
aimed	O
at	O
the	O
processing	O
of	O
the	O
typical	O
not-so-small	O
unstructured	O
3D	O
models	O
that	O
arise	O
in	O
the	O
3D	B-Algorithm
scanning	I-Algorithm
pipeline	O
.	O
</s>
<s>
The	O
automatic	O
mesh	B-Algorithm
cleaning	O
filters	O
includes	O
removal	O
of	O
duplicated	O
,	O
unreferenced	O
vertices	O
,	O
non-manifold	O
edges	O
,	O
vertices	O
,	O
and	O
null	O
faces	O
.	O
</s>
<s>
Remeshing	O
tools	O
support	O
high	O
quality	O
simplification	O
based	O
on	O
quadric	O
error	O
measure	O
,	O
various	O
kinds	O
of	O
subdivision	O
surfaces	O
,	O
and	O
two	O
surface	O
reconstruction	O
algorithms	O
from	O
point	B-Algorithm
clouds	I-Algorithm
based	O
on	O
the	O
ball-pivoting	O
technique	O
and	O
on	O
the	O
Poisson	O
surface	O
reconstruction	O
approach	O
.	O
</s>
<s>
For	O
the	O
removal	O
of	O
noise	O
,	O
usually	O
present	O
in	O
acquired	O
surfaces	O
,	O
MeshLab	B-Language
supports	O
various	O
kinds	O
of	O
smoothing	B-Application
filters	O
and	O
tools	O
for	O
curvature	O
analysis	O
and	O
visualization	O
.	O
</s>
<s>
It	O
includes	O
a	O
tool	O
for	O
the	O
registration	O
of	O
multiple	O
range	O
maps	O
based	O
on	O
the	O
iterative	B-General_Concept
closest	I-General_Concept
point	I-General_Concept
algorithm	O
.	O
</s>
<s>
MeshLab	B-Language
also	O
includes	O
an	O
interactive	O
direct	O
paint-on-mesh	O
system	O
that	O
allows	O
users	O
to	O
interactively	O
change	O
the	O
color	O
of	O
a	O
mesh	B-Algorithm
,	O
to	O
define	O
selections	O
and	O
to	O
directly	O
smooth	O
out	O
noise	O
and	O
small	O
features	O
.	O
</s>
<s>
MeshLab	B-Language
is	O
available	O
for	O
most	O
platforms	O
,	O
including	O
Linux	B-Application
,	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
,	O
Windows	B-Application
and	O
,	O
with	O
reduced	O
functionality	O
,	O
on	O
Android	B-Application
and	O
iOS	B-Application
and	O
even	O
as	O
a	O
pure	O
client-side	O
JavaScript	B-Language
application	O
called	O
MeshLabJS	O
.	O
</s>
<s>
The	O
system	O
supports	O
input/output	O
in	O
the	O
following	O
formats	O
:	O
PLY	O
,	O
STL	O
,	O
OFF	O
,	O
OBJ	O
,	O
3DS	O
,	O
VRML	B-Application
2.0	I-Application
,	O
X3D	B-Application
and	O
COLLADA	O
.	O
</s>
<s>
MeshLab	B-Language
can	O
also	O
import	O
point	B-Algorithm
clouds	I-Algorithm
reconstructed	O
using	O
Photosynth	B-Application
.	O
</s>
<s>
MeshLab	B-Language
is	O
used	O
in	O
various	O
academic	O
and	O
research	O
contexts	O
,	O
like	O
microbiology	O
,	O
cultural	O
heritage	O
,	O
surface	O
reconstruction	O
,	O
paleontology	O
,	O
for	O
rapid	B-Device
prototyping	I-Device
in	O
orthopedic	O
surgery	O
,	O
in	O
orthodontics	O
,	O
and	O
desktop	O
manufacturing	O
.	O
</s>
