<s>
Colour	B-Algorithm
banding	I-Algorithm
is	O
a	O
subtle	O
form	O
of	O
posterization	B-Algorithm
in	O
digital	O
images	O
,	O
caused	O
by	O
the	O
colour	O
of	O
each	O
pixel	O
being	O
rounded	O
to	O
the	O
nearest	O
of	O
the	O
digital	O
colour	O
levels	O
.	O
</s>
<s>
While	O
posterization	B-Algorithm
is	O
often	O
done	O
for	O
artistic	O
effect	O
,	O
colour	B-Algorithm
banding	I-Algorithm
is	O
an	O
undesired	O
artifact	O
.	O
</s>
<s>
This	O
will	O
happen	O
with	O
gradual	O
gradients	O
(	O
like	O
sunsets	O
,	O
dawns	O
or	O
clear	O
blue	O
skies	O
)	O
,	O
and	O
also	O
when	O
blurring	B-Error_Name
an	O
image	O
a	O
large	O
amount	O
.	O
</s>
<s>
Colour	B-Algorithm
banding	I-Algorithm
is	O
more	O
noticeable	O
with	O
fewer	O
bits	O
per	O
pixel	O
(	O
BPP	O
)	O
at	O
16256	O
colours	O
(	O
48BPP	O
)	O
,	O
where	O
there	O
are	O
fewer	O
shades	O
with	O
a	O
larger	O
difference	O
between	O
them	O
.	O
</s>
<s>
Because	O
the	O
banding	O
comes	O
from	O
limitations	O
in	O
the	O
presentation	O
of	O
the	O
image	O
,	O
blurring	B-Error_Name
the	O
image	O
does	O
not	O
fix	O
this	O
.	O
</s>
