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[css-color-4] reference AdobeRGB (1998)
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svgeesus committed Jul 3, 2019
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9 changes: 4 additions & 5 deletions css-color-4/Overview.bs
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Expand Up @@ -1596,8 +1596,7 @@ Device-independent Colors: Lab and LCH</h2>
when they report measured colors in Lab.
Conversion from colors specified using other white points is called a <dfn export>chromatic adaptation transform</dfn>,
which models the changes in the human visual system as we adapt to a new lighting condition.
The Bradford algorithm
<!-- add reference -->
The Bradford algorithm [[!Bradford-CAT]]
is the industry standard chromatic adaptation transform,
and is easy to calculate as it is a simple matrix multiplication.

Expand Down Expand Up @@ -1706,7 +1705,7 @@ Converting sRGB colors to Lab colors</h3>
<li>Convert from sRGB to linear-light sRGB (undo gamma encoding)
<li>Convert from linear sRGB to CIE XYZ
<li>Convert from a D65 whitepoint (used by sRGB) to the D50 whitepoint used
in Lab, with the Bradford transform
in Lab, with the Bradford transform [[!Bradford-CAT]]
<li>Convert D50-adapted XYZ to Lab
</ol>

Expand Down Expand Up @@ -1803,7 +1802,7 @@ Profiled, Device-dependent Colors</h2>
This could be for example a calibrated CMYK printer,
or an RGB colorspace (such as ProPhoto <!-- ref -->, <!-- would be good to mention AdobeRGB 1998 here too, need to check trademark and copyright status first --> widely used by photographers), or any other color or monochrome output device which has been characterized.
In addition, for convenience,
CSS provides two <!-- more than 2 now, update text!! --> -->predefined RGB color spaces:
CSS provides several <!-- more than 2 now, update text!! --> -->predefined RGB color spaces:
image-p3 [[!DCI-P3]],
which is a wide gamut space typical of current wide-gamut monitors,
and Rec. 2020 [[!Rec.2020]],
Expand Down Expand Up @@ -1983,7 +1982,7 @@ Predefined colorspaces: ''srgb'', ''image-p3'', ''a98rgb'', ''prophotorgb'' and
with each having a valid range of [0, 1]. The transfer curve is
a gamma function, close to but not exactly 1/2.2.

''a98rgb'' is compatible with Adobe® RGB (1998).
''a98rgb'' is compatible with Adobe® RGB (1998) [[!AdobeRGB]].

Adobe® RGB (1998) uses primaries originally derived
from the SMPTE 240M standard;
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