<s>
The	O
Teknomo	B-Algorithm
–	I-Algorithm
Fernandez	I-Algorithm
algorithm	I-Algorithm
(	O
TF	B-Algorithm
algorithm	I-Algorithm
)	O
,	O
is	O
an	O
efficient	O
algorithm	O
for	O
generating	O
the	O
background	O
image	O
of	O
a	O
given	O
video	O
sequence	O
.	O
</s>
<s>
By	O
assuming	O
that	O
the	O
background	O
image	O
is	O
shown	O
in	O
the	O
majority	O
of	O
the	O
video	O
,	O
the	O
algorithm	O
is	O
able	O
to	O
generate	O
a	O
good	O
background	O
image	O
of	O
a	O
video	O
in	O
-time	O
using	O
only	O
a	O
small	O
number	O
of	O
binary	O
operations	O
and	O
Boolean	O
Bit	O
operations	O
,	O
which	O
require	O
a	O
small	O
amount	O
of	O
memory	O
and	O
has	O
built-in	O
operators	O
found	O
in	O
many	O
programming	O
languages	O
such	O
as	O
C	B-Language
,	O
C++	B-Language
,	O
and	O
Java	B-Language
.	O
</s>
<s>
People	O
tracking	O
from	O
videos	O
usually	O
involves	O
some	O
form	O
of	O
background	B-Algorithm
subtraction	I-Algorithm
to	O
segment	O
foreground	O
from	O
background	O
.	O
</s>
<s>
Once	O
foreground	O
images	O
are	O
extracted	O
,	O
then	O
desired	O
algorithms	O
(	O
such	O
as	O
those	O
for	O
motion	B-Operating_System
tracking	I-Operating_System
,	O
object	B-Application
tracking	I-Application
,	O
and	O
facial	O
recognition	O
)	O
may	O
be	O
executed	O
using	O
these	O
images	O
.	O
</s>
<s>
However	O
,	O
background	B-Algorithm
subtraction	I-Algorithm
requires	O
that	O
the	O
background	O
image	O
is	O
already	O
available	O
and	O
unfortunately	O
,	O
this	O
is	O
not	O
always	O
the	O
case	O
.	O
</s>
<s>
More	O
recently	O
,	O
automatic	O
background	O
generation	O
through	O
object	B-General_Concept
detection	I-General_Concept
,	O
medial	O
filtering	O
,	O
medoid	O
filtering	O
,	O
approximated	O
median	O
filtering	O
,	O
linear	O
predictive	O
filter	O
,	O
non-parametric	B-General_Concept
model	I-General_Concept
,	O
Kalman	O
filter	O
,	O
and	O
adaptive	B-Application
smoothening	I-Application
have	O
been	O
suggested	O
;	O
however	O
,	O
most	O
of	O
these	O
methods	O
have	O
high	O
computational	O
complexity	O
and	O
are	O
resource-intensive	O
.	O
</s>
<s>
The	O
Teknomo	B-Algorithm
–	I-Algorithm
Fernandez	I-Algorithm
algorithm	I-Algorithm
is	O
also	O
an	O
automatic	O
background	O
generation	O
algorithm	O
.	O
</s>
<s>
The	O
space	O
requirement	O
of	O
the	O
Teknomo	B-Algorithm
–	I-Algorithm
Fernandez	I-Algorithm
algorithm	I-Algorithm
is	O
given	O
by	O
the	O
function	O
,	O
depending	O
on	O
the	O
resolution	O
of	O
the	O
image	O
,	O
the	O
number	O
of	O
frames	O
in	O
the	O
video	O
,	O
and	O
the	O
desired	O
number	O
of	O
levels	O
.	O
</s>
<s>
A	O
variant	O
of	O
the	O
Teknomo	B-Algorithm
–	I-Algorithm
Fernandez	I-Algorithm
algorithm	I-Algorithm
that	O
incorporates	O
the	O
Monte-Carlo	B-Algorithm
method	I-Algorithm
named	O
CRF	O
has	O
been	O
developed	O
.	O
</s>
<s>
Experiments	O
on	O
some	O
colored	O
video	O
sequences	O
showed	O
that	O
the	O
CRF	O
configurations	O
outperform	O
the	O
TF	B-Algorithm
algorithm	I-Algorithm
in	O
terms	O
of	O
accuracy	O
.	O
</s>
<s>
However	O
,	O
the	O
TF	B-Algorithm
algorithm	I-Algorithm
remains	O
more	O
efficient	O
in	O
terms	O
of	O
processing	O
time	O
.	O
</s>
