<s>
The	O
stereo	B-Algorithm
cameras	I-Algorithm
approach	O
is	O
a	O
method	O
of	O
distilling	O
a	O
noisy	O
video	O
signal	O
into	O
a	O
coherent	O
data	O
set	O
that	O
a	O
computer	O
can	O
begin	O
to	O
process	O
into	O
actionable	O
symbolic	O
objects	O
,	O
or	O
abstractions	O
.	O
</s>
<s>
Stereo	B-Algorithm
cameras	I-Algorithm
is	O
one	O
of	O
many	O
approaches	O
used	O
in	O
the	O
broader	O
fields	O
of	O
computer	B-Application
vision	I-Application
and	O
machine	B-General_Concept
vision	I-General_Concept
.	O
</s>
<s>
This	O
is	O
very	O
similar	O
to	O
how	O
the	O
human	O
brain	O
uses	O
stereoscopic	B-Algorithm
information	O
from	O
the	O
eyes	O
to	O
gain	O
depth	O
cue	O
information	O
,	O
i.e.	O
</s>
<s>
Finding	O
the	O
same	O
singular	O
physical	O
point	O
in	O
the	O
two	O
left	O
and	O
right	O
images	O
is	O
known	O
as	O
the	O
correspondence	B-Algorithm
problem	I-Algorithm
.	O
</s>
<s>
This	O
type	O
of	O
stereoscopic	B-Algorithm
image	I-Algorithm
processing	O
technique	O
is	O
used	O
in	O
applications	O
such	O
as	O
3D	B-Algorithm
reconstruction	I-Algorithm
,	O
robotic	O
control	O
and	O
sensing	O
,	O
crowd	O
dynamics	O
monitoring	O
and	O
off-planet	O
terrestrial	O
rovers	O
;	O
for	O
example	O
,	O
in	O
mobile	O
robot	O
navigation	O
,	O
tracking	B-Operating_System
,	O
gesture	B-General_Concept
recognition	I-General_Concept
,	O
targeting	O
,	O
3D	O
surface	O
visualization	O
,	O
immersive	O
and	O
interactive	O
gaming	O
.	O
</s>
<s>
Other	O
approaches	O
to	O
stereoscopic	B-Algorithm
sensing	O
include	O
time	B-Device
of	I-Device
flight	I-Device
sensors	O
and	O
ultrasound	B-Application
.	O
</s>
