> Not necessarily: It is possible to have ICC profiles that only contain
> a matrix ("matrix shaper profile").
OK, in this case the LUTs are simply neutral (1:1) or can at least be
handled as such.
> > 2. Exposure can be incorporated into the first LUT. This would avoid a
> >LUT that discard
k...@khk.net said:
> That is if the scanner actually supports an exposure control. The
> scanners I deal with (EPSON) don't expose this control.
Almost all proper film scanners (i.e. those that only film) will
expose this control. If it didn't it would receive such bad
reviews it would be dead
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On Fri, Mar 21, 2003 at 04:34:47PM +0100, Henning Meier-Geinitz wrote:
> > their own ICC profiles, for which a new API function would be ideal).
>=20
> Wouldn't it
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On Wed, Mar 19, 2003 at 08:44:51PM +, Major A wrote:
[ ... ]
>=20
> The rest is not that simple... ICC profiles work by applying a LUT to
> each channel, then t
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On Fri, Mar 21, 2003 at 04:34:47PM +0100, Henning Meier-Geinitz wrote:
> LUT =3D gamma table?
A gamma table is a lookup table containing the gamma values (calculat
> To summarize, I think these changes are necessary:
>
> 4. ideally, we also want a (SANE-independent) tool for creating
>profiles based on scans from calibrated targets.
Does SCARSE sound like what is needed (http://www.scarse.org)? With a
name like "Scanner CAlibration ReaSonably Easy", it
Hi,
On Wed, Mar 19, 2003 at 08:44:51PM +, Major A wrote:
> > Can you give some details what has to be done for that? Are changes
> > necessary for the backends, frontends and/or the API?
>
> I don't think much has been done yet. I don't think we need to change
> any backends (the only thing w
> > Just an idea -- since this is bound to become an issue with more than
> > just the Coolscan2 backend, how about adding a "preference memory"
> > feature to xsane? You could save multiple sets of settings for the
> > same backend and recall them any time. This way you could set up one
> > for ea
> Can you give some details what has to be done for that? Are changes
> necessary for the backends, frontends and/or the API?
I don't think much has been done yet. I don't think we need to change
any backends (the only thing would be if backends wanted to supply
their own ICC profiles, for which a
Hi,
On Wed, Mar 19, 2003 at 04:01:32PM +, Major A wrote:
> Maybe it's finally time to add ICC support to a SANE?
Can you give some details what has to be done for that? Are changes
necessary for the backends, frontends and/or the API?
Bye,
Henning
Hi,
On Wed, Mar 19, 2003 at 12:32:06AM +, Major A wrote:
> Then we would have to add focusing and exposure options to the SANE
> standard as well-known options because they are vital for film
> scanning.
Both are already on the TODO for SANE2. As I don't have a film
scanner, it's up to you (o
> According to various readings, every scanner has a different CLUT[*].
> Every film needs also a different CLUT.
>
> http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=000QOR
> http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=000E8u
Before we start creating custom LUTs for each scanner-fi
On mercredi, mars 19, 2003, at 12:03 Europe/Paris, James Beard wrote:
> What is the main information that Vuescan uses to allow it to produce
> such good results? I haven't had much of a chance to experiment, but
> the most obvious user defined settings were:
>
> 1. scanner model
> 2. film type
>
hfigui...@teaser.fr said:
> You would have me as a tester. Not sure about contributing as I'd not
> h ave enough spare time. Anyway if you want to think cross-platform,
> I'd be happy to help on that...
I am not offering to write it, just pointing out what to me is
the obvious.
Slide and nega
On Wednesday 19 March 2003 00:32, Major A wrote:
>...
>
> Then we would have to add focusing and exposure options to the SANE
> standard as well-known options because they are vital for film
> scanning.
>
I think this is a critical point to make things move.
ZP
Jonathan Buzzard écrit:
> Here is a better idea. How about a SANE front end dedicated to scanning
> slides and negatives. As another idea it could be closely modelled on
> VueScan. At the end of the day that is what is required.
>
You would have me as a tester. Not sure about contributing as I
If the backend provides focus control, the frontends make it available
to the user. For some film scanners focus control is already
supported by the SANE programs.
Regards,
Ulrich Deiters
> >Here is a better idea. How about a SANE front end dedicated to scanning
> >slides and negatives. As another idea it could be closely modelled on
> >VueScan. At the end of the day that is what is required.
> >
> >JAB.
>
> This would be very welcome, and I encourage this.
> However I shouldn't sp
> Here is a better idea. How about a SANE front end dedicated to scanning
> slides and negatives. As another idea it could be closely modelled on
> VueScan. At the end of the day that is what is required.
>
> JAB.
This would be very welcome, and I encourage this.
However I shouldn't speak as I am
and...@users.sourceforge.net said:
> Just an idea -- since this is bound to become an issue with more than
> just the Coolscan2 backend, how about adding a "preference memory"
> feature to xsane? You could save multiple sets of settings for the
> same backend and recall them any time. This way you
> >Orange mask: at least with Coolscan2, this one is trivial: adjust the
> >exposure times of the R, G, B channels so that the space between two
> >frames comes out exactly white. If you then scan with these settings
> >and invert, all colours will be correct, and you have used the scanner
> >at it
Major A écrit:
> Orange mask: at least with Coolscan2, this one is trivial: adjust the
> exposure times of the R, G, B channels so that the space between two
> frames comes out exactly white. If you then scan with these settings
> and invert, all colours will be correct, and you have used the sc
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