<s>
2D-plus-Depth	B-Algorithm
is	O
a	O
stereoscopic	B-Algorithm
video	I-Algorithm
coding	I-Algorithm
format	O
that	O
is	O
used	O
for	O
3D	O
displays	O
,	O
such	O
as	O
Philips	O
WOWvx	B-Algorithm
.	O
</s>
<s>
Philips	O
discontinued	O
work	O
on	O
the	O
WOWvx	B-Algorithm
line	O
in	O
2009	O
,	O
citing	O
"	O
current	O
market	O
developments	O
"	O
.	O
</s>
<s>
They	O
offer	O
autostereoscopic	O
3D	O
displays	O
which	O
use	O
the	O
2D-plus-Depth	B-Algorithm
format	O
for	O
3D	O
video	O
input	O
.	O
</s>
<s>
The	O
2D-plus-Depth	B-Algorithm
format	O
is	O
described	O
in	O
a	O
Philips	O
 '	O
white	O
paper	O
and	O
articles	O
.	O
</s>
<s>
Supported	O
by	O
various	O
companies	O
across	O
the	O
display	O
industry	O
,	O
2D-plus-Depth	B-Algorithm
has	O
been	O
standardized	O
in	O
MPEG	O
as	O
an	O
extension	O
for	O
3D	O
filed	O
under	O
ISO/IEC	O
FDIS	O
23002-3:2007(E )	O
.	O
</s>
<s>
There	O
is	O
also	O
an	O
extension	O
on	O
the	O
2D-plus-Depth	B-Algorithm
format	O
called	O
the	O
WOWvx	B-Algorithm
Declipse	O
format	O
.	O
</s>
<s>
2D-plus-Depth	B-Algorithm
has	O
the	O
advantage	O
that	O
it	O
has	O
a	O
limited	O
bandwidth	O
increase	O
compared	O
to	O
2D	O
(	O
compressed	O
greyscale	O
increases	O
bandwidth	O
5	O
–	O
20%	O
)	O
so	O
that	O
it	O
can	O
be	O
used	O
in	O
existing	O
distribution	O
infrastructures	O
.	O
</s>
<s>
2D-plus-Depth	B-Algorithm
offers	O
flexibility	O
and	O
compatibility	O
with	O
existing	O
production	O
equipment	O
and	O
compression	O
tools	O
.	O
</s>
<s>
Another	O
advantage	O
is	O
that	O
depth	O
maps	O
are	O
created	O
in	O
the	O
course	O
of	O
2D-to-stereo	B-Algorithm
3D	I-Algorithm
conversion	I-Algorithm
using	O
almost	O
any	O
approach	O
to	O
this	O
video	O
transformation	O
.	O
</s>
<s>
That	O
is	O
why	O
there	O
is	O
the	O
respective	O
2D-plus-Depth	B-Algorithm
representation	O
of	O
a	O
converted	O
stereo	O
footage	O
in	O
almost	O
all	O
cases	O
.	O
</s>
<s>
2D-plus-Depth	B-Algorithm
is	O
not	O
compatible	O
with	O
existing	O
2D	O
or	O
3D-Ready	O
displays	O
.	O
</s>
<s>
2d-plus-Depth	B-Algorithm
cannot	O
handle	O
transparency	O
(	O
semi-transparent	O
objects	O
in	O
the	O
scene	O
)	O
and	O
occlusion	O
(	O
an	O
object	O
blocking	O
the	O
view	O
of	O
another	O
)	O
.	O
</s>
<s>
Creation	O
of	O
accurate	O
2D-plus-Depth	B-Algorithm
can	O
be	O
costly	O
and	O
difficult	O
,	O
though	O
recent	O
advances	O
in	O
range	B-Algorithm
imaging	I-Algorithm
have	O
made	O
this	O
process	O
more	O
accessible	O
.	O
</s>
<s>
2d-plus-Depth	B-Algorithm
lacks	O
the	O
potential	O
increase	O
in	O
resolution	O
of	O
using	O
two	O
complete	O
images	O
.	O
</s>
<s>
In	O
general	O
case	O
only	O
semi-automatic	O
approach	O
is	O
viable	O
for	O
2D	O
to	O
2D-plus-Depth	B-Algorithm
conversion	O
.	O
</s>
<s>
Philips	O
developed	O
a	O
3D	O
content	O
creation	O
software	O
suite	O
named	O
BlueBox	O
which	O
includes	O
semi-automated	O
conversion	O
of	O
2D	O
content	O
into	O
2D-plus-Depth	B-Algorithm
format	O
and	O
automatic	O
generation	O
of	O
2D-plus-Depth	B-Algorithm
from	O
stereo	O
.	O
</s>
<s>
A	O
similar	O
semiautomatic	O
approach	O
to	O
high	O
quality	O
2D	O
to	O
2D-plus-Depth	B-Algorithm
conversion	O
is	O
implemented	O
in	O
YUVsoft	O
's	O
2D	O
to	O
3D	O
Suite	O
,	O
available	O
as	O
a	O
set	O
of	O
plugins	O
for	O
After	O
Effects	O
and	O
NUKE	O
video	O
compositing	O
software	O
.	O
</s>
<s>
Stereoscopic	O
to	O
2D-plus-Depth	B-Algorithm
conversion	O
involves	O
several	O
algorithms	O
including	O
scene	O
change	O
detection	O
,	O
segmentation	O
,	O
motion	O
estimation	O
and	O
image	O
matching	O
.	O
</s>
<s>
Automatic	O
stereo	O
to	O
2D+Depth	B-Algorithm
conversion	O
is	O
now	O
possible	O
due	O
to	O
new	O
high	O
performance	O
software	O
and	O
GPU	O
technology	O
,	O
even	O
in	O
live	O
real-time	O
mode	O
.	O
</s>
<s>
Other	O
3D	O
formats	O
are	O
stereo	O
(	O
left-right	O
or	O
alternating	O
frames	O
)	O
and	O
multiview	O
3D	O
format	O
(	O
such	O
as	O
Multiview	B-Algorithm
Video	I-Algorithm
Coding	I-Algorithm
and	O
Scalable	B-Application
Video	I-Application
Coding	I-Application
)	O
,	O
and	O
2D	B-Application
plus	I-Application
Delta	I-Application
.	O
</s>
