Am 14.06.07, 21:23 +0200 schrieb Peter Karp: > I think here's a good start to ask. I'm comparing several solutions to > convert files with ICC profiles for the purpose of applying printer > profiles and to create files for softproof use. > > I'm open for all suggestions and so far I have tried the Argyll CLI > cctiff and lcms tifficc and Photoline and Photoshop. > > I found _significant_ differences between all the programs. Special > if/how white paper simulation is done is totally different.
Scaling of gamuts can be done in various ways. Do not wonder about the different results. At least the naming should be consitent. > 1) lcms and Argyll don't seem to allow a paper simulation, when I use > relative or perceptual intent. Is this correct? That would be > interesting when I want to convert a file for softproof purposes. Use the absolute intent. Relative is not specified to touch the white point. Speaking about paper simulation, there are more than one concept to do paper simulation: o proof with relative colorimetric intent should perform no white point adaption, hence no paper simulation o absolute intent can adapt to paper white assuming the observer is adapted to the simulation media , like photoshop or assume an not adapted observer like standard lcms behaviour The later is useful if you like to compare to a hard proof under controled lighing conditions - D50. This is the behaviour in CinePaint, and I expect in many other applications too. > 2) Do you know of other (if possible free) programs which would allow > a softproof -- CLI solutions are also interesting ? Scribus, CinePaint, Krita, LightScape(Java), GraphicsMagic ... tifficc, argyll, as well, with some knowledge, you can easily combine conversions to obtain the behaviour you want. > 3) OT: The Adobe CMM is now available as a download. Is there an > option to use the CMM to convert files _without_ Photoshop, for > example with a CL interface? It should be selectable on osX, if this is what you use? On Linux there is no interface to create a CMM API for. It is on the TODO list for some people. > 4) The softproof option of tifficc did not work for me. Then I got no > file output. Can someone give me a complete working example? Where did you take the binaries used, for which platform? kind regards Kai-Uwe Behrmann -- developing for colour management www.behrmann.name + www.oyranos.org + www.cinepaint.org ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Lcms-user mailing list Lcms-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lcms-user
