[sane-devel] lprof and sane, was [Lcms-user] monitor profile questions -- adding vcgt to a profile?

Hal V. Engel hvengel@astound.net
Wed, 27 Oct 2004 13:04:00 -0700

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In the sane-devel mailing list on 27 Jul, 2003 Gerard Klaver wrote (see=20

=C2=A8I think it (meaning lprof) should be nice if this package could be=20
used as a short of plugin package in the sane frontends. But maybe i=20
am wrong?=C2=A8

I think this is right on the money.  The lprof scanner profiler would=20
likely need some modification to make it a plugin but most of the=20
functionality would be usable as is.  In addition the front end(s)=20
would need to be enhanced to embed profiles and do conversions between=20
profiles. =20

I have two scanner packages that are ICC aware.  On Windows I have=20
SilverFast AI.  SilverFast AI will use the device profile to convert=20
the image to your selected working profile as part of the scanning=20
process.  It also has an optional feature that will let you create=20
custom profiles using an IT8 target.  I also have Vuescan Professional=20
on both Windows and Linux.  Vuescan Pro has the ability to use ICC=20
profiles and functions like SilverFast where you specify both a device=20
and working profile and your images are output having been converted=20
to the working profile.  Vuescan Pro can also create scanner profiles=20
using an IT8 target.  I believe that Vuescan uses the SANE back end on=20
linux.  So this functionality belongs in the front end.

Also scanners and cameras are almost trivial to profile.  All you need=20
is a good target, the targets data file and some software and almost=20
any user can get a good profile.  With a properly designed front end=20
it should be easy for almost any user to use this functionality.


On Wednesday 27 October 2004 05:36, gerard klaver wrote:
> On Tue, 2004-10-19 at 10:19, marti@littlecms.com wrote:
> > Hi,
> >=20
> > > >Are the reasons known? Just curious..
> >=20
> >=20
> > As Gerhard already noted, I am not allowed to support or maintain=20
> > the lprof package anymore. The reasons are the company I work=20
> > for (HP) acquired the sources for its internal use.=20
> >=20
> > Moreover, the technology I was using in the latest profilers (not=20
> > lprof, but what intended to sell as professional package) is=20
> > "sensible" in terms my non-disclosure agreement. So, I=20
> > sacrificed this package in order to keep lcms (the CMM) alive=20
> > and well.=20
> >=20
> > HP kindly allow me to continue the development of lcms as=20
> > open source and even more, they does SUPPORT this development.=20
> > In such way I have contact with ICC members, access to restricted=20
> > documents, proposed extensions, etc.
> >=20
> > So, I'm very sorry for that, but lprof is now effectively dead.=20
> > At least as open source. It would be nice, however, if anybody=20
> > would take the sources and continue with the development. But as=20
> > I am not allowed to do that anymore.
> >=20
> > King regards,
> > Marti.
> >=20
> Hello,
> To keep the lprof package available i have placed the lprof files and
> other information from Marti old profilers page on my homepage.
> See http://gkall.hobby.nl/sane-lprof/sane-lprof.html
> Goal is to maintain the package as good as possible but time and/or
> knowledge can be a problem. Also if more people are interested in
> maintaining this package, let me know.
> Then maintenance depends not on a single person and placing it in the
> SANE CVS tree (sane-lprof or first sane/experimental/sane-lprof) is a
> good option. See als SANE Bugreport 30181.
> =20
> In this way more people are be able to use the package on more=20
> and there is a tracking system for the patches and changes.
> And if you have any remarks/comments/updates on/for this page, please
> let me know.
> --=20
> ----------
> m.vr.gr.
> Gerard Klaver
> -------------------------------------------------------
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