<s>
Image	B-General_Concept
collection	I-General_Concept
exploration	I-General_Concept
is	O
a	O
mechanism	O
to	O
explore	O
large	O
digital	O
image	O
repositories	O
.	O
</s>
<s>
The	O
huge	O
amount	O
of	O
digital	O
images	O
produced	O
every	O
day	O
through	O
different	O
devices	O
such	O
as	O
mobile	O
phones	O
bring	O
forth	O
challenges	O
for	O
the	O
storage	O
,	O
indexing	B-Application
and	O
access	O
to	O
these	O
repositories	O
.	O
</s>
<s>
Content-based	B-Application
image	I-Application
retrieval	I-Application
(	O
CBIR	B-Application
)	O
has	O
been	O
the	O
traditional	O
paradigm	O
to	O
index	O
and	O
retrieve	O
images	O
.	O
</s>
<s>
Image	B-General_Concept
collection	I-General_Concept
exploration	I-General_Concept
consists	O
of	O
a	O
set	O
of	O
computational	O
methods	O
to	O
represent	O
,	O
summarize	O
,	O
visualize	O
and	O
navigate	O
image	O
repositories	O
in	O
an	O
efficient	O
,	O
effective	O
and	O
intuitive	O
way	O
.	O
</s>
<s>
Automatic	B-Application
summarization	I-Application
consists	O
in	O
finding	O
a	O
set	O
of	O
images	O
from	O
a	O
larger	O
image	O
collection	O
that	O
represents	O
such	O
collection	O
.	O
</s>
<s>
Different	O
methods	O
based	O
on	O
clustering	B-Algorithm
have	O
been	O
proposed	O
to	O
select	O
these	O
image	O
prototypes	B-Application
(	O
summary	O
)	O
.	O
</s>
<s>
Information	B-Application
visualization	I-Application
is	O
an	O
active	O
area	O
that	O
investigates	O
new	O
ways	O
to	O
visualize	O
information	O
by	O
using	O
visualization	O
metaphors	O
.	O
</s>
