RE: Reading a Profile
RE: Reading a Profile
- Subject: RE: Reading a Profile
- From: "Alexey Gribunin" <email@hidden>
- Date: Fri, 8 Jun 2001 11:00:48 +0400
>
I want to find out the black generation settings and generally
traditionally
>
defined CMYK setup from an ICC profile, i.e. dot gain, separation type,
>
ink limits.
In Gretag ProfileMaker's profiles you can see it inside the profile. Also
you'll find testform's Lab and CMYK values used to create this profile.
This is the example:
----------------------------
BEGIN_DATA_FORMAT
SampleID SampleName CMYK_C CMYK_M CMYK_Y CMYK_K
END_DATA_FORMAT
NUMBER_OF_SETS 999
BEGIN_DATA
1 A1 100.00 0.00 0.00 0.00
2 A2 0.00 100.00 0.00 0.00
.........................
998 2M37 100.00 0.00 0.00 0.00
999 2M37 0.00 100.00 0.00 0.00
END_DATA
text LGOROWLENGTH 27
CREATED "6/5/2001" # Time: 08:02
INSTRUMENTATION "SpectroScan"
MEASUREMENT_SOURCE "Illumination=D50 ObserverAngle=2? WhiteBase=Abs
Filter=Unknown"
KEYWORD "SampleID"
KEYWORD "SampleName"
BEGIN_DATA_FORMAT
SampleID SampleName XYZ_X XYZ_Y XYZ_Z Lab_L Lab_a Lab_b
END_DATA_FORMAT
NUMBER_OF_SETS 999
BEGIN_DATA
1 A1 9.75 14.99 46.08 45.62 -32.66 -58.47
2 A2 39.95 19.43 15.03 51.19 83.13 2.45
..........................
998 2M37 9.72 14.94 46.29 45.55 -32.56 -58.84
999 2M37 39.50 19.13 14.35 50.84 83.23 3.59
END_DATA
..............Perceptual: 2 GCR1-55-95-388
-----------------------------
I think it's great feature! It would be nice if all profiler software put
measurements and settings into profile.
If you have no such datas in the profile, you can calculate max inks simply
by separation apropriate RGB picture in Photoshop. Black generation settings
and max inks you can see in some profile edition software like ColorSynergy
or Kodak ProfileEditor. Also you can evaluate black generation in Photoshop.
An approximated Dot gain you also can calculate, but it's more complicated
task. You'll need PrintOpen (or any other profiler software which shows dot
gain curves during profile creation). Testform for it can be generated from
the analized profile in Logo ColorLab. But remember - all of this extracted
datas are only aproximation, not the exact values!
Best regards,
Alexey Gribunin.