<s>
Scanner	B-Application
Access	I-Application
Now	I-Application
Easy	I-Application
(	O
SANE	B-Application
)	O
is	O
an	O
open-source	O
application	B-Application
programming	I-Application
interface	I-Application
(	O
API	B-Application
)	O
that	O
provides	O
standardized	O
access	O
to	O
any	O
raster	O
image	B-Application
scanner	I-Application
hardware	O
(	O
flatbed	B-Application
scanner	O
,	O
handheld	B-Application
scanner	I-Application
,	O
video	O
-	O
and	O
still-cameras	O
,	O
frame	B-Device
grabbers	I-Device
,	O
etc	O
.	O
)	O
.	O
</s>
<s>
The	O
SANE	B-Application
API	B-Application
is	O
public	O
domain	O
.	O
</s>
<s>
It	O
is	O
commonly	O
used	O
on	O
Linux	B-Application
.	O
</s>
<s>
SANE	B-Application
differs	O
from	O
TWAIN	B-Application
in	O
that	O
it	O
is	O
cleanly	O
separated	O
into	O
"	O
front	B-Architecture
ends	I-Architecture
"	O
(	O
user	O
programs	O
)	O
and	O
"	O
back	B-Architecture
ends	I-Architecture
"	O
(	O
scanner	O
drivers	O
)	O
.	O
</s>
<s>
Whereas	O
a	O
TWAIN	B-Application
driver	O
handles	O
the	O
user	O
interface	O
as	O
well	O
as	O
communications	O
with	O
the	O
scanner	O
hardware	O
,	O
a	O
SANE	B-Application
driver	O
only	O
provides	O
an	O
interface	O
with	O
the	O
hardware	O
and	O
describes	O
a	O
number	O
of	O
"	O
options	O
"	O
which	O
drive	O
each	O
scan	O
.	O
</s>
<s>
By	O
convention	O
there	O
are	O
several	O
"	O
well	O
known	O
"	O
options	O
that	O
front	B-Architecture
ends	I-Architecture
can	O
supply	O
using	O
convenient	O
GUI	B-Application
interaction	O
e.g.	O
,	O
the	O
scan	O
area	O
options	O
can	O
be	O
set	O
by	O
dragging	O
a	O
rectangular	O
outline	O
over	O
a	O
preview	O
image	O
.	O
</s>
<s>
Other	O
options	O
can	O
be	O
presented	O
using	O
GUI	B-Application
elements	O
appropriate	O
to	O
their	O
type	O
e.g.	O
,	O
sliders	O
,	O
drop-down	O
lists	O
,	O
etc	O
.	O
</s>
<s>
One	O
consequence	O
of	O
this	O
separation	O
is	O
that	O
network	O
scanning	O
is	O
easily	O
implemented	O
with	O
no	O
special	O
handling	O
in	O
either	O
the	O
front	B-Architecture
ends	I-Architecture
or	O
back	B-Architecture
ends	I-Architecture
.	O
</s>
<s>
On	O
client	O
machines	O
a	O
"	O
net	O
"	O
back	B-Architecture
end	I-Architecture
(	O
driver	O
)	O
connects	O
to	O
the	O
remote	O
host	O
to	O
fetch	O
the	O
scanner	O
options	O
,	O
and	O
perform	O
previews	O
and	O
scans	O
.	O
</s>
<s>
The	O
saned	O
daemon	O
acts	O
as	O
a	O
front	B-Architecture
end	I-Architecture
locally	O
,	O
but	O
simply	O
passes	O
requests	O
and	O
data	O
between	O
the	O
network	O
connections	O
and	O
the	O
local	O
scanner	O
.	O
</s>
<s>
Similarly	O
,	O
the	O
"	O
net	O
"	O
back	B-Architecture
end	I-Architecture
passes	O
requests	O
and	O
data	O
between	O
the	O
local	O
front	B-Architecture
end	I-Architecture
and	O
the	O
remote	O
host	O
.	O
</s>
<s>
Various	O
types	O
of	O
unsupervised	O
batch	O
scanning	O
are	O
also	O
possible	O
with	O
a	O
minimum	O
of	O
support	O
needed	O
in	O
the	O
back	B-Architecture
end	I-Architecture
(	O
driver	O
)	O
.	O
</s>
<s>
Using	O
the	O
SANE	B-Application
API	B-Application
,	O
the	O
front	B-Architecture
end	I-Architecture
simply	O
has	O
to	O
"	O
play	O
back	O
"	O
the	O
same	O
set	O
of	O
options	O
for	O
each	O
scan	O
,	O
driving	O
the	O
document	O
feed	O
in	O
between	O
scans	O
to	O
load	O
the	O
next	O
sheet	O
of	O
paper	O
.	O
</s>
<s>
The	O
front	B-Architecture
end	I-Architecture
only	O
has	O
to	O
obtain	O
the	O
set	O
of	O
options	O
from	O
the	O
user	O
once	O
.	O
</s>
<s>
Several	O
user	O
interfaces	O
have	O
been	O
written	O
to	O
combine	O
SANE	B-Application
with	O
an	O
easy	O
user	O
method	O
of	O
controlling	O
it	O
.	O
</s>
<s>
gscan2pdf	O
is	O
an	O
interface	O
for	O
scanning	O
documents	O
to	O
PDF	O
on	O
the	O
GNOME	B-Application
desktop	I-Application
that	O
uses	O
SANE	B-Application
to	O
communicate	O
with	O
the	O
scanner	O
.	O
</s>
<s>
It	O
is	O
available	O
under	O
the	O
GPL	B-License
.	O
</s>
<s>
It	O
is	O
also	O
able	O
to	O
perform	O
OCR	B-Application
using	O
several	O
optional	O
OCR	B-Application
tools	O
and	O
save	O
a	O
searchable	O
PDF	O
.	O
</s>
<s>
Simple	O
Scan	O
is	O
a	O
simplified	O
GUI	B-Application
using	O
SANE	B-Application
that	O
is	O
intended	O
to	O
be	O
easier	O
to	O
use	O
and	O
better	O
integrate	O
into	O
the	O
GNOME	B-Application
desktop	I-Application
than	O
XSane	O
.	O
</s>
<s>
It	O
was	O
initially	O
written	O
for	O
Ubuntu	B-Operating_System
and	O
is	O
maintained	O
by	O
Robert	O
Ancell	O
of	O
Canonical	O
Ltd	O
.	O
for	O
Linux	B-Application
.	O
</s>
<s>
Simple	O
Scan	O
was	O
first	O
fielded	O
as	O
part	O
of	O
Ubuntu	B-Operating_System
10.04	O
Lucid	O
Lynx	O
and	O
is	O
also	O
used	O
in	O
Lubuntu	B-Application
(	O
until	O
Lubuntu	B-Application
18.04	O
LTS	O
)	O
and	O
Xubuntu	B-Application
.	O
</s>
<s>
It	O
is	O
now	O
part	O
of	O
the	O
GNOME	B-Application
project	O
.	O
</s>
<s>
Skanlite	O
is	O
a	O
simple	O
image	B-Application
scanning	I-Application
application	O
,	O
based	O
on	O
the	O
KSane	O
backend	B-Architecture
.	O
</s>
<s>
In	O
KDE	B-Language
4	I-Language
Skanlite	O
replaced	O
Kooka	O
of	O
KDE	O
3	O
as	O
default	O
KDE	O
scanning	O
application	O
.	O
</s>
<s>
Skanlite	O
is	O
based	O
on	O
libksane	O
,	O
an	O
interface	O
provided	O
by	O
KDE	O
for	O
SANE	B-Application
libraries	O
to	O
control	O
flatbed	B-Application
scanners	O
.	O
</s>
<s>
SwingSane	O
is	O
a	O
cross-platform	O
,	O
Java	O
front	B-Architecture
end	I-Architecture
for	O
SANE	B-Application
,	O
written	O
and	O
maintained	O
by	O
Roland	O
Quast	O
.	O
</s>
<s>
It	O
is	O
available	O
for	O
Microsoft	B-Application
Windows	I-Application
,	O
Linux	B-Application
,	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
and	O
is	O
licensed	O
under	O
the	O
Apache	O
2.0	O
License	O
.	O
</s>
<s>
XSane	O
is	O
a	O
graphical	O
front	B-Architecture
end	I-Architecture
for	O
SANE	B-Application
written	O
by	O
Oliver	O
Rauch	O
.	O
</s>
<s>
It	O
is	O
available	O
for	O
Microsoft	B-Application
Windows	I-Application
,	O
Linux	B-Application
,	O
UNIX	B-Application
,	O
and	O
OS/2	B-Application
and	O
is	O
licensed	O
under	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
(	O
GPL	B-License
)	O
.	O
</s>
<s>
The	O
Windows	O
version	O
only	O
allows	O
a	O
Windows	O
computer	O
to	O
access	O
a	O
scanner	O
that	O
is	O
attached	O
to	O
a	O
Unix	B-Application
,	O
OS/2	B-Application
or	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
network	O
computer	O
,	O
but	O
not	O
generally	O
to	O
the	O
local	O
Windows	O
computer	O
.	O
</s>
<s>
Only	O
the	O
"	O
complete	O
"	O
sane-back-ends	O
versions	O
will	O
possibly	O
work	O
with	O
some	O
scanner	O
models	O
connected	O
locally	O
.	O
</s>
