<s>
Dynamic	B-Algorithm
texture	I-Algorithm
(	O
sometimes	O
referred	O
to	O
as	O
temporal	O
texture	O
)	O
is	O
the	O
texture	O
with	O
motion	O
which	O
can	O
be	O
found	O
in	O
videos	O
of	O
sea-waves	O
,	O
fire	O
,	O
smoke	O
,	O
wavy	O
trees	O
,	O
etc	O
.	O
</s>
<s>
Dynamic	B-Algorithm
texture	I-Algorithm
has	O
a	O
spatially	O
repetitive	O
pattern	O
with	O
time-varying	O
visual	O
pattern	O
.	O
</s>
<s>
Modeling	O
and	O
analyzing	O
dynamic	B-Algorithm
texture	I-Algorithm
is	O
a	O
topic	O
of	O
images	B-Algorithm
processing	I-Algorithm
and	O
pattern	O
recognition	O
in	O
computer	B-Application
vision	I-Application
.	O
</s>
<s>
Extracting	O
features	O
that	O
describe	O
the	O
dynamic	B-Algorithm
texture	I-Algorithm
can	O
be	O
utilized	O
for	O
tasks	O
of	O
images	O
sequences	O
classification	O
,	O
segmentation	B-Algorithm
,	O
recognition	O
and	O
retrieval	O
.	O
</s>
<s>
Comparing	O
with	O
texture	O
found	O
within	O
static	O
images	O
,	O
analyzing	O
dynamic	B-Algorithm
texture	I-Algorithm
is	O
a	O
challenging	O
problem	O
.	O
</s>
<s>
It	O
is	O
important	O
that	O
the	O
extracted	O
features	O
from	O
dynamic	B-Algorithm
texture	I-Algorithm
combine	O
motion	O
and	O
appearance	O
description	O
,	O
and	O
also	O
be	O
invariance	O
to	O
some	O
transformation	O
such	O
as	O
rotation	O
,	O
translation	O
and	O
illumination	O
.	O
</s>
<s>
The	O
methods	O
of	O
dynamic	B-Algorithm
texture	I-Algorithm
recognition	O
can	O
categorized	O
as	O
follows	O
:	O
</s>
<s>
Methods	O
based	O
on	O
optical	O
flow	O
:	O
by	O
applying	O
optical	O
flow	O
to	O
the	O
dynamic	B-Algorithm
texture	I-Algorithm
,	O
velocity	O
with	O
direction	O
and	O
magnitude	O
can	O
be	O
detected	O
and	O
used	O
to	O
recognize	O
the	O
dynamic	B-Algorithm
texture	I-Algorithm
.	O
</s>
<s>
-	O
Motion	O
detection	O
:	O
Dynamic	B-Algorithm
texture	I-Algorithm
features	B-Algorithm
extracted	I-Algorithm
from	O
footage	O
videos	O
can	O
be	O
exploited	O
to	O
detect	O
abnormal	O
crowd	O
activities	O
.	O
</s>
<s>
-	O
Video	O
classification	O
:	O
video	O
of	O
natural	O
scenes	O
or	O
other	O
scenes	O
that	O
exhibit	O
dynamic	B-Algorithm
textures	I-Algorithm
.	O
</s>
<s>
-	O
Video	O
retrieval	O
:	O
Dynamic	B-Algorithm
textures	I-Algorithm
can	O
be	O
employed	O
as	O
a	O
feature	O
retrieve	O
videos	O
that	O
contain	O
,	O
for	O
example	O
,	O
sea-waves	O
,	O
smoke	O
,	O
clouds	O
,	O
wavy	O
trees	O
.	O
</s>
