Hey,
I just noticed the primaries are slightly different between Argyll's
sRGB.icm and the original HP sRGB from 1998:
$ for TAG in wtpt bkpt rXYZ gXYZ bXYZ; do for ICC in srgb.icc
/usr/share/color/argyll/ref/sRGB.icm ; do echo $TAG $(iccdump -v3 -t $TAG
$ICC | tail -n1); done; done
wtpt 0: 0.95045471, 1.00000000, 1.08905029 [Lab 100.000000, -2.387816,
-19.404026]
wtpt 0: 0.95045471, 1.00000000, 1.08905029 [Lab 100.000000, -2.387816,
-19.404026]
bkpt 0: 0.00000000, 0.00000000, 0.00000000 [Lab 0.000000, 0.000000,
0.000000]
bkpt 0: 0.00000000, 0.00000000, 0.00000000 [Lab 0.000000, 0.000000,
0.000000]
rXYZ 0: 0.43606567, 0.22248840, 0.01391602 [Lab 54.290039, 80.819385,
69.895681]
rXYZ 0: 0.43603516, 0.22248840, 0.01391602 [Lab 54.290039, 80.810432,
69.895681]
gXYZ 0: 0.38514709, 0.71687317, 0.09707642 [Lab 87.817866, -79.257775,
80.987193]
gXYZ 0: 0.38511658, 0.71690369, 0.09706116 [Lab 87.819339, -79.273851,
80.994868]
bXYZ 0: 0.14306641, 0.06060791, 0.71409607 [Lab 29.565320, 68.301300,
-112.049899]
bXYZ 0: 0.14305115, 0.06060791, 0.71392822 [Lab 29.565320, 68.291889,
-112.034964]
The differences seem mostly academical, though I do wonder where they come
from?
Regards,
Pascal de Bruijn
MD5SUMs:
1d3fda2edb4a89ab60a23c5f7c7d81dd srgb.icc
112db584b2b3a8688104e88f34e83a5c /usr/share/color/argyll/ref/sRGB.icm
