On Fri, 2003-07-25 at 14:10, Henning Meier-Geinitz wrote: > Hi, > > On Fri, Jul 25, 2003 at 01:54:57PM +0200, Stefan Schlörholz wrote: > > what about general support for .icm profile generation and usgae? > > There was some discussion on this list about color management, e.g.: > http://www.mostang.com/pipermail/sane-devel/2002-August/015083.html > > > An aquire module for these .icm files using a reference target (Kodak > > Q-60E3 or IT8.7) would be nice so that you can calibrate yout scanner > > > > Maybe together with monitor profile you can aquire an image from the > > scanner and directly get the proper result for your scanner/monitor > > combintion. > > > > Since I have no clue about programming and CVS I have to go through > > email > > Well, it looks like it's not important enough for the developers as > nothing has been implemented yet :-) > > I personally don't know much about color management and this kind of > calibration. Do we need support for that in the backends and or the > API at all? I thought it's necessary to create the .icm files with > each individual scanner. So e.g. if you have two scanners (exactly > same model) they may vary, because e.g. gain/offset is different > because of slightly different sensitivity of the CCD/CIS. > > I'll add an entry in the TODO list but more input would be appreciated. > > Bye, > Henning
A start could be to collect default icc profiles from the various scanners (sane backend or a seperatie libray package) and if present some .cgt files (package lprof). This .cgt file is generated with qtMeasurments and is an inputfile for qtScannerProfiles to generate a .icc file. When this file is present a user can make a .icc file with some different parameters. I don't know if .cgt files are used or generated by other programs? Structure profile directory could be: backend name/scanner module name/.icc and .cgt files Stucture filename scanner modelnr.-profilenr.-versionr.extension In the header of the cgt file some information can be placed and can be viewed withfor exampe vim. A linux viewer for an .icc profile not yet found. The use of a default .icc profile for each scanner can result in better scan results. For the best result a user has to make his own .icc files with an reference target. For a example of a .cgt file see gkall.hobby.nl/notes3.html For some other collect .icm (icc) lists see for example the next link: http://www.littlecms.com/iphoto/profiles.htm -- ---------- m.vr.gr. Gerard Klaver
