s.
The second step almost certainly is into a smaller colourspace.
Here rendering intent indicates the preferred way of compressing all
possible colours into such smaller space.
Regards,
Enno Fennema
I am looking for a good file format to save scanned RGBI images, that is
like a RGBA file but an infrared instead of a transparency byte for
each pixel. Sane once (and maybe still) transfered RGBI info but I am
not sure it was ever written to a file.
An additional requirement is that the file mus
Gernot Hassenpflug wrote:
> On Sun, Mar 28, 2010 at 8:44 PM, m. allan noah wrote:
> The options I can see in color negative scan mode are (translated as
> best I can):
>
> 3) dirt removal (using FARE)
FARE is the Canon word for the Infrared scanning, Dirt removal should do
a scan with D8 20 data
m. allan noah wrote:
> Uhm- how are you scanning IR in sane with an unsupported scanner?
You are right. I wrote a custom driver which does IR (well, kind of;
that is my problem) and at the same time talking with Gernot about the
SANE 8800F driver. As often suggested a custom driver is easier when
I am scanning negatives on a Canon scanner, both normal RGB and then
infrared. The alignment of visible dark (light after inversion) patches
in rgb and the IR patches is poor and varies in a for me unpredictable
way from patch to patch.
Would like to get in touch with anyone having similar results
ork better.
Regards,
Enno Fennema
A configuration file would look something like:
[Backends]
...
canonusb
...
def myscanner canonusb N656U
[canonusb]
model Canoscan N656U
...
[Canoscan N656U]
vendor 0x02A9
product 0x2206
sysname /dev/usbscanner0
saturationRed 2.44
saturationGreen 1.37
saturationBlue 1.08
...
Would appreciate comments on the points raised.
Enno Fennema
e.fenn...@dataweb.nl
