Hi, Do you have tried the new profiler?
This may be due to scanner noise, as Gerhard says. In the new profiler there is a merit figure for identifying noise. When you pick the samples, in the Picker dialog there are 3 fields labeled as "Signal-to-noise depth bits". These are the effective bits per sample used in the scanout. A value of 6 or more is very good. Below 5 is going to give these artifacts. Choosing "Mode" instead of "Mean" could also minimize the effect. But anyway, the new profiler should do a better job on the highlights and shadows.. http://www.littlecms.com/lcms_profiler_beta1.exe Regards, Marti Maria The little cms project http://www.littlecms.com [EMAIL PROTECTED] ----- Original Message ----- From: "Jacek Zagaja" <[EMAIL PROTECTED]> To: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> Sent: Saturday, September 27, 2003 10:17 AM Subject: [Lcms-user] Re: Problems with black point Gerhard, Good to hear I am not alone. I used full resolution polynomial. From my side I can check Profile Maker 4.15 if necessary. 8 bits RAW profiles are free from that and TRC profiles also. I haven't tested new 16 bits LCMS. The problems reffer to white point also. Exposure seems to be critical for lut profilers. For example I used target which was underexposed (170 white) so observe how many artifacts create that full resolution clut LCMS profile: http://tme.szczecin.pl/~jacek/temp/LCMS/lcms_white.jpg TRC profile: http://tme.szczecin.pl/~jacek/temp/LCMS/xlp_white.jpg Surely Marti know about this matter. Best regards -- JZ. ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Lcms-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/lcms-user ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Lcms-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/lcms-user
