<s>
Orthogonal	B-Algorithm
polarization	I-Algorithm
spectral	I-Algorithm
imaging	I-Algorithm
(	O
OPS	O
imaging	O
)	O
is	O
a	O
method	O
for	O
imaging	O
small	O
blood	O
vessels	O
in	O
tissue	O
like	O
the	O
nail	O
bed	O
or	O
lip	O
.	O
</s>
<s>
The	O
depolarized	O
light	O
forms	O
an	O
image	O
of	O
the	O
microcirculation	O
on	O
a	O
charge-coupled	B-Algorithm
device	I-Algorithm
(	O
CCD	O
)	O
,	O
which	O
can	O
be	O
captured	O
through	O
single	O
frames	O
or	O
on	O
videotape	O
.	O
</s>
