Understanding an ICC profile
Understanding an ICC profile
- Subject: Understanding an ICC profile
- From: Mark <email@hidden>
- Date: Thu, 7 Jun 2007 23:11:10 +0200
Hello list,
I'm currently reading some documents about color spaces. I have the
in formation about various color spaces in front of me and I just
thought, cool, now let me check how this looks like in reality.
So I opened up the /System/Library/ColorSync/Profiles/sRGB
Profile.icc profile.
To my surprise none of the values I have about sRGB can be found on
the profile - how can that be - can someone demystify this to me?
Here's what I have on sRGB (and that I mostly cannot find on the
profile):
1) Primaries / Phosphors (ITU-R BT 709-5)
R G B
X 0,64 0,30 0,15
Y 0,33 0,60 0,06
Z 0,03 0,10 0,79
2) White Illuminant (D65)
X 0,3127
Y 0,3290
Z 0,3583
3) XYZ to RGB Matrix
X 3,2405 -1,5371 -0,4985
Y -0,9693 1,8760 0,0416
Z 0,0556 -0,2040 1,0572
4) RGB to XYZ Matrix
X 0,4125 0,3576 0,1804
Y 0,2127 0,7152 0,0722
Z 0,0193 0,1192 0,9503
5) Gamma
2,2
Regards
Mark
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