Monday, January 10, 2011

Happy new 2011!

I would like to begin this year with a comment for a recurrent question:

Can I use LittleCMS to create a profile for my camera/printer/scanner/etc?

Color management, at least ICC color management, is a two step process.

You need both, ICC profiles for each device you want to integrate in the workflow and a piece of software, called "CMM" that uses those profiles for doing color management.

ICC color management requires all "smarts" of gamut mapping to be placed in the profiles. Then actually, building a profile involves a lot of art.

LittleCMS is a CMM. It can use those profiles to perform color management.  It does NOT create profiles. It can be used to create the physical files that contains the color mappings, but it does not compute the maps. I can tell you that creating good profiles is a very difficult task, and takes teams of color scientists to define algoriths and settings, taking into account things like memory colors, skin tones, primary preservation and so.

So, littlecms is useless for you if you need to create profiles from the end user point of view. As useless as it would be photoshop, which cannot create profiles neither, it only uses yet-exiting profiles.

For the programmer point of view, lcms can be used to create the files that contain the colormaps, and many people are using it in such way. That would be, lcms is the canvas artists may use to do their creations. lcms would take care of all details of the profile specification.

Having said that, please take a look on ArgyllCMS, a package that can create v2 profiles. Profiles created by Argyll can be used by LittleCMS without any problem.


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