[argyllcms] Re: Developer snapshot V0.70 Beta Test now available.

On Thursday 22 March 2007 04:50, Graeme Gill wrote:

> Please report and problems or issues in compiling or running this
> snapshot.

I've just used dispcal from this beta, with a DTP92Q. I attached the 
results, and those from the v0.60... There are differences, but I don't 
know which one is better.

Measures where done one after another, with following parameters:

$ dispcal -v -d 2,1 -K -q h -y c -m A901HT (0.70b1)

and

$ dispcal -v -i 92 -d 2,1 -a -q h -y c -m A901HT (0.60)

These are the first measures I made on this screen, but once the LUT is 
loaded, black does not remain black. I guess this is what we see on the 
graph: curves do not start at 0. is it a screen issue, a colorimeter 
issue, software issue, or, more probably, a user issue? ;o)

-- 
   Frédéric

   http://www.gbiloba.org

$ dispcal -v -i 92 -d 2,1 -a -q h -y c -m A901HT
Setting up the instrument
Offset calibration:
Place instrument on a dark surface.
Hit Esc to skip, any other key to start calibration:
Offset calibration successful
The instrument can be removed from the dark surface.
Cell ratio calibration:
Place instrument on test window.
Hit Esc to skip, any other key to start calibration:
Cell ratio calibration successful
The instrument can be removed from the screen.
Setting up the instrument
Place instrument on test window.
Hit Esc to give up, any other key to continue:
Display type is CRT
Target white = native white
Target brightness = native brightness
Target gamma = 2.200000
Commencing device calibration
patch 6 of 6
Black = XYZ   0.38   0.42   0.62
Red   = XYZ  41.56  22.37   2.51
Green = XYZ  35.45  73.31  13.84
Blue  = XYZ  18.06   8.87  91.75
White = XYZ  94.74 104.31 107.48
patch 96 of 96
Initial native brightness target = 104.310000 cd/m^2
Had to scale brightness from 104.310000 to 103.915985 to fit within gamut
Target white value is XYZ 94.382134 103.915985 107.074011
Target black point = 0.537694 0.592009 0.610000
Gamma curve offset = 0.095464
Creating initial calibration curves...
patch 96 of 96
Brightness error = 0.504015 cd/m^2
White point error = 0.201970 deltaE
Maximum neutral error (@ 0.043737) = 4.406643 deltaE
Average neutral error = 1.613283 deltaE
Computing update to calibration curves...
patch 96 of 96
Brightness error = -0.085985 cd/m^2
White point error = 0.105613 deltaE
Maximum neutral error (@ 0.043737) = 5.138464 deltaE
Average neutral error = 1.528510 deltaE
Computing update to calibration curves...
patch 96 of 96
Brightness error = -0.535985 cd/m^2
White point error = 0.291157 deltaE
Maximum neutral error (@ 0.000000) = 1.375229 deltaE
Average neutral error = 0.551654 deltaE
Computing update to calibration curves...
patch 96 of 96
Brightness error = -1.045985 cd/m^2
White point error = 0.441673 deltaE
Maximum neutral error (@ 0.126844) = 1.877809 deltaE
Average neutral error = 0.497746 deltaE
Computing update to calibration curves...
The instrument can be removed from the screen.

$ /usr/local/src/argyllV0.70Beta1_linux_x86_bin/bin/dispcal -v -d 2,1 -K -q h 
-y c -m A901HT
Setting up the instrument
 Instrument Type:  DTP92Q
 Serial Number:    009156
 BOOT version:     None
 Software version: A323
Place the instrument on a dark surface,
 and then hit any key to continue,
 or hit Esc, ^C or Q to abort:
Calibration complete
Setting up the instrument
 Instrument Type:  DTP92Q
 Serial Number:    009156
 BOOT version:     None
 Software version: A323
Place instrument on test window.
Hit Esc, ^C or Q to give up, any other key to continue:
Display type is CRT
Target white = native white
Target brightness = native brightness
Target gamma = 2.200000
Commencing device calibration
patch 6 of 6
Black = XYZ   0.07   0.11   0.03
Red   = XYZ  39.92  21.36   1.85
Green = XYZ  34.59  71.67  12.94
Blue  = XYZ  17.53   8.50  89.76
White = XYZ  92.73 101.89 105.16
patch 96 of 96
Initial native brightness target = 101.890000 cd/m^2
Had to scale brightness from 101.890000 to 101.870455 to fit within gamut
Target white value is XYZ 92.712213 101.870455 105.139828
Target black point = 0.100111 0.110000 0.113530
Gamma curve offset = 0.057597, Gamma curve power = 2.393361
Creating initial calibration curves...
patch 96 of 96
Brightness error = 0.019545 cd/m^2
White point error = 0.109318 deltaE
Maximum neutral error (@ 0.029208) = 2.270216 deltaE
Average neutral error = 0.873939 deltaE
Computing update to calibration curves...
patch 96 of 96
Brightness error = -0.030455 cd/m^2
White point error = 0.105517 deltaE
Maximum neutral error (@ 0.029208) = 3.573527 deltaE
Average neutral error = 0.538375 deltaE
Computing update to calibration curves...
patch 96 of 96
Brightness error = -0.100455 cd/m^2
White point error = 0.093898 deltaE
Maximum neutral error (@ 0.029208) = 2.113074 deltaE
Average neutral error = 0.419833 deltaE
Computing update to calibration curves...
patch 96 of 96
Brightness error = -0.130455 cd/m^2
White point error = 0.068449 deltaE
Maximum neutral error (@ 0.015823) = 3.336289 deltaE
Average neutral error = 0.448108 deltaE
Computing update to calibration curves...
The instrument can be removed from the screen.

Attachment: cal-v0.70b1.png
Description: PNG image

Attachment: cal-v0.60.png
Description: PNG image

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