<s>
In	O
scientific	B-Application
visualization	I-Application
the	O
asymptotic	B-Application
decider	I-Application
is	O
an	O
algorithm	O
developed	O
by	O
Nielson	O
and	O
Hamann	O
in	O
1991	O
that	O
creates	O
isosurfaces	O
from	O
a	O
given	O
scalar	O
field	O
.	O
</s>
<s>
It	O
was	O
proposed	O
as	O
an	O
improvement	O
to	O
the	O
marching	B-Algorithm
cubes	I-Algorithm
algorithm	I-Algorithm
,	O
which	O
can	O
produce	O
some	O
"	O
bad	O
"	O
topology	O
,	O
but	O
can	O
also	O
be	O
considered	O
an	O
algorithm	O
in	O
its	O
own	O
right	O
.	O
</s>
<s>
These	O
contours	O
can	O
then	O
be	O
connected	O
to	O
polygons	O
and	O
triangulated	B-Algorithm
.	O
</s>
