<s>
Google	B-Application
Image	I-Application
Swirl	I-Application
was	O
an	O
enhancement	O
for	O
an	O
image-search	O
tool	O
in	O
Google	B-Application
Labs	I-Application
.	O
</s>
<s>
It	O
was	O
announced	O
on	O
the	B-Application
Google	I-Application
labs	O
blog	O
on	O
November	O
17	O
,	O
2009	O
with	O
a	O
limited	O
number	O
of	O
search	O
queries	O
available	O
.	O
</s>
<s>
It	O
was	O
built	O
on	O
Google	B-Application
image	I-Application
search	I-Application
by	O
grouping	O
together	O
images	O
with	O
similar	O
visual	O
and	O
semantic	O
qualities	O
.	O
</s>
<s>
In	O
September	O
2009	O
,	O
a	O
few	O
weeks	O
before	O
Google	B-Application
Image	I-Application
Swirl	I-Application
appeared	O
,	O
Microsoft	O
announced	O
Bing	B-Application
Visual	I-Application
Search	I-Application
Beta	O
.	O
</s>
<s>
However	O
,	O
exploration	O
of	O
images	O
with	O
Bing	B-Application
requires	O
an	O
installment	O
and	O
use	O
of	O
the	O
Internet	B-Application
Explorer	I-Application
browser	O
with	O
Silverlight	B-Application
.	O
</s>
<s>
Bing	B-Application
Visual	I-Application
Search	I-Application
is	O
available	O
only	O
in	O
English	O
.	O
</s>
<s>
According	O
to	O
Google	B-Application
researchers	O
Yushi	O
Jing	O
and	O
Henry	O
Rowley	O
,	O
and	O
Aparna	O
Chennapragada	O
,	O
Google	B-Application
Image	I-Application
Swirl	I-Application
leverages	O
both	O
the	O
text	O
information	O
and	O
the	O
"	O
visual	O
"	O
features	O
associated	O
with	O
Web	O
images	O
(	O
such	O
as	O
those	O
developed	O
for	O
Google	B-Application
Similar	O
Images	O
)	O
to	O
determine	O
how	O
images	O
should	O
be	O
grouped	O
together	O
.	O
</s>
<s>
As	O
part	O
of	O
an	O
effort	O
to	O
refocus	O
attention	O
on	O
more	O
refined	O
products	O
,	O
Google	B-Application
Labs	I-Application
was	O
shut	O
down	O
in	O
2011	O
.	O
</s>
