Hi, Well, littlecms in core is just a CMM. That is, a set of functions to access ICC profiles. At that point, there are several "levels of abstraction" you can use. From the simplest usage, which would be the command-line utilities, tifficc, icctrans and so, to the very complex, low-level layer of building your own profiles.
Normally, there is no need to go so deep. _cmsSampler is one of these complex things that you probably do not need. If you want to try some prgramming, the tutorial included in lcms is a good starting point, make sure to understand how to create color transforms. This is a sort of basis for all underlying concepts. Python and TCL are good tools to do experiments. Regards, Marti Maria The little cms project http://www.littlecms.com [EMAIL PROTECTED] ----- Original Message ----- From: "Christian Bednarek" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, May 11, 2004 9:40 AM Subject: [Lcms-user] How does this all work? or: help, I'm too stupid! Good morning, to start with, I am working for a newspaper and one of my jobs is, to ensure color quality and to provide a somehow working colormanagement workflow. To this point it's just a matter of work and time, no special skills needed, just the tools and programs to create and maintain profiles, ICC capable RIPs and so on... Now the last months were very successfull (including the membership in the International Newspaper Color Quality Club) and in depth information about how "all this stuff works" intrigues me. Starting with this tcl-extension for lcms and some more or less useful programs I wrote for my company to provide some more "scientific" options on handling spotcolors and colors provided by customers ("hey, I have this wonderful T-Shirt. I'd like to have my ad in the same color..."). So. How the hell does this work? I tried to understand what all those scientific papers and articles try to make me understand... Maybe I'm too stupid or my maths is far too bad... :) Marti's very short part in the tutorial about the pipes of profilecreation is the first starting point that made any sense to me. But maybe this is to short :) For example: I have a proofing printer here (Laser, Xerox DC12) which I characterize once a week or so. I print out a test chart (TC6.02) w/o the printers linearization, read this chart with my beloved DTP41 and Logos (Gretag MacBeths) Profilemaker spits out a profile. I'm smart enough to understand, that this "sample" values together with the known input-values are the core of a profile. But how on earth does this relate to _cmsSampler, the LUTs and so on? I do not want you reply with the full history and knowledge of ICC and profiling. Some small hints, maybe an URL would be welcome. -- Thanks, Christian Bednarek ------------------------------------------------------- This SF.Net email is sponsored by Sleepycat Software Learn developer strategies Cisco, Motorola, Ericsson & Lucent use to deliver higher performing products faster, at low TCO. http://www.sleepycat.com/telcomwpreg.php?From=osdnemail3 _______________________________________________ Lcms-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/lcms-user ------------------------------------------------------- This SF.Net email is sponsored by Sleepycat Software Learn developer strategies Cisco, Motorola, Ericsson & Lucent use to deliver higher performing products faster, at low TCO. http://www.sleepycat.com/telcomwpreg.php?From=osdnemail3 _______________________________________________ Lcms-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/lcms-user
