[argyllcms] Re: Problem with 1.1.0 RC2 ?
- From: andrzej duda <desdaa@xxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Thu, 10 Dec 2009 00:55:19 +0100
Graeme,
thanks for your fast replay.
I'm comparing the results on screen produced by the two profiles.
The numbers seem to me rather good. There is not much difference
between the two
profiles. Target black error was even smaller for the new one.
The problem is in the dark tones. The new profile gives very greenish
grays (0- 25).
And the LUT curves confirm the difference, there is a dip in Red
channel curve in this
region (see the attachments I've posted with the previous mail).
I'm trying to figure out why I get so different LUT curves while the
hardware settings and
target numbers before the calibrations were actually the same.
This is from the new one (greenish):
Target Brightness = 100.00, Current = 101.75, error = 1.8%
Target 50% Level = 22.15, Current = 24.01, error = 1.9%
Target Near Black = 1.02, Current = 1.14, error = 0.1%
Target white = x 0.3128, y 0.3291, Current = x 0.3123, y 0.3289,
error = 0.31 DE
Target black = x 0.3128, y 0.3291, Current = x 0.3138, y 0.3302,
error = 0.62 DE
Press 1 .. 7
1) Black level (CRT: Offset/Brightness)
2) White point (Color temperature, R,G,B, Gain/Contrast)
3) White level (CRT: Gain/Contrast, LCD: Brightness/Backlight)
4) Black point (R,G,B, Offset/Brightness)
5) Check all
6) Measure and set ambient for viewing condition adjustment
7) Continue on to calibration
8) Exit
Commencing device calibration
patch 6 of 6
Black = XYZ 0.29 0.27 0.26
Red = XYZ 47.92 26.34 2.70
Green = XYZ 31.10 67.84 12.06
Blue = XYZ 18.75 9.01 97.30
White = XYZ 96.55 101.71 110.94
patch 80 of 80
Target white value is XYZ 95.047834 100.000000 108.839185
Adjusted target black XYZ 0.23 0.25 0.27, Lab 2.23 0.00 0.00
Target black after min adjust: XYZ 0.269 0.283 0.308, Lab 2.556 0.000
0.000
Gamma curve input offset = 0.100337, output offset = 0.000000, power
= 2.552043
Total Iteration 4, Final Samples = 96 Final Repeat threshold = 0.400000
Creating initial calibration curves...
Doing iteration 1 with 12 sample points and repeat threshold of
1.131371 DE
patch 12 of 12
Brightness error = -0.318085 cd/m^2
White point error = 0.581481 deltaE
Maximum neutral error (@ 0.000000) = 3.146359 deltaE
Average neutral error = 0.862618 deltaE
Failed to meet target 1.131371 delta E, got worst case 3.146359
Number of measurements taken = 47
Computing update to calibration curves...
Doing iteration 2 with 24 sample points and repeat threshold of
0.800000 DE
patch 24 of 24
Brightness error = -0.413185 cd/m^2
White point error = 0.621462 deltaE
Maximum neutral error (@ 0.000000) = 4.081550 deltaE
Average neutral error = 0.867670 deltaE
Failed to meet target 0.800000 delta E, got worst case 4.081550
Number of measurements taken = 88
Computing update to calibration curves...
Doing iteration 3 with 48 sample points and repeat threshold of
0.565685 DE
patch 48 of 48
Brightness error = 0.339806 cd/m^2
White point error = 0.508590 deltaE
Maximum neutral error (@ 0.002112) = 5.740510 deltaE
Average neutral error = 1.001109 deltaE
Failed to meet target 0.565685 delta E, got worst case 5.740510
Number of measurements taken = 219
Computing update to calibration curves...
Doing iteration 4 with 96 sample points and repeat threshold of
0.400000 DE
patch 96 of 96
Brightness error = -0.484178 cd/m^2
White point error = 0.031101 deltaE
Maximum neutral error (@ 0.000000) = 9.492002 deltaE
Average neutral error = 1.765220 deltaE
Failed to meet target 0.400000 delta E, got worst case 6.274843
Number of measurements taken = 768
The instrument can be removed from the screen.
Written calibration file 'T966 A D65 Cd100 G2.2 09-12.cal'
Loading LUT curves from file...
And this is the old one:
Target Brightness = 100.00, Current = 100.32, error = 0.3%
Target 50% Level = 21.83, Current = 23.36, error = 1.5%
Target Near Black = 1.00, Current = 1.11, error = 0.1%
Target white = x 0.3128, y 0.3291, Current = x 0.3135, y 0.3299,
error = 0.44 DE
Target black = x 0.3128, y 0.3291, Current = x 0.3112, y 0.3295,
error = 1.54 DE
Press 1 .. 7
1) Black level (CRT: Offset/Brightness)
2) White point (Color temperature, R,G,B, Gain/Contrast)
3) White level (CRT: Gain/Contrast, LCD: Brightness/Backlight)
4) Black point (R,G,B, Offset/Brightness)
5) Check all
6) Measure and set ambient for viewing condition adjustment
7) Continue on to calibration
8) Exit
Commencing device calibration
patch 6 of 6
Black = XYZ 0.25 0.23 0.21
Red = XYZ 47.37 26.01 2.59
Green = XYZ 30.79 66.90 11.83
Blue = XYZ 18.28 8.84 95.02
White = XYZ 95.44 100.37 108.75
patch 80 of 80
Had to scale brightness from 100.000000 to 99.847260 to fit within
gamut,
corresponding to RGB 0.993870 0.996363 1.000000
Target white value is XYZ 94.902658 99.847260 108.672945
Adjusted target black XYZ 0.20 0.21 0.23, Lab 1.90 0.00 0.00
Target black after min adjust: XYZ 0.219 0.231 0.251, Lab 2.086 0.000
0.000
Gamma curve input offset = 0.088891, output offset = 0.000000, power
= 2.508151
Total Iteration 4, Final Samples = 96 Final Repeat threshold = 0.400000
Creating initial calibration curves...
Doing iteration 1 with 12 sample points and repeat threshold of
1.131371 DE
patch 12 of 12
Brightness error = 0.447209 cd/m^2
White point error = 0.441689 deltaE
Maximum neutral error (@ 0.000000) = 1.283560 deltaE
Average neutral error = 0.773529 deltaE
Failed to meet target 1.131371 delta E, got worst case 1.283560
Number of measurements taken = 32
Computing update to calibration curves...
Doing iteration 2 with 24 sample points and repeat threshold of
0.800000 DE
patch 24 of 24
Brightness error = 0.125477 cd/m^2
White point error = 0.412314 deltaE
Maximum neutral error (@ 0.000000) = 1.420033 deltaE
Average neutral error = 0.554248 deltaE
Failed to meet target 0.800000 delta E, got worst case 1.420033
Number of measurements taken = 66
Computing update to calibration curves...
Doing iteration 3 with 48 sample points and repeat threshold of
0.565685 DE
patch 48 of 48
Brightness error = 0.197368 cd/m^2
White point error = 0.425580 deltaE
Maximum neutral error (@ 0.002112) = 1.586303 deltaE
Average neutral error = 0.437349 deltaE
Failed to meet target 0.565685 delta E, got worst case 1.586303
Number of measurements taken = 210
Computing update to calibration curves...
Doing iteration 4 with 96 sample points and repeat threshold of
0.400000 DE
patch 96 of 96
Brightness error = -0.317526 cd/m^2
White point error = 0.159630 deltaE
Maximum neutral error (@ 0.000000) = 2.437442 deltaE
Average neutral error = 0.448321 deltaE
Failed to meet target 0.400000 delta E, got worst case 1.586303
Number of measurements taken = 609
The instrument can be removed from the screen.
Written calibration file 'T966 A D65 Cd100 G2.2 30-11.cal'
Loading LUT curves from file...
Regards
Andrzej Duda
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