<s>
A	O
sombrero	B-Algorithm
function	I-Algorithm
(	O
sometimes	O
called	O
besinc	O
function	O
or	O
jinc	B-Algorithm
function	I-Algorithm
)	O
is	O
the	O
2-dimensional	O
polar	O
coordinate	O
analog	O
of	O
the	O
sinc	B-Algorithm
function	I-Algorithm
,	O
and	O
is	O
so-called	O
because	O
it	O
is	O
shaped	O
like	O
a	O
sombrero	O
hat	O
.	O
</s>
<s>
This	O
function	O
is	O
frequently	O
used	O
in	O
image	B-Algorithm
processing	I-Algorithm
.	O
</s>
