[argyllcms] Re: Why colprof doesn't generate identity profile for synthetic image?
- From: Ben Goren <ben@xxxxxxxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Tue, 4 Sep 2012 17:16:25 -0700
On 2012-08-28, at 7:40 AM, Mikhail Matrosov wrote:
> I have a synthetic image of the ColorChecker (see the attachment, or here
> "Derived from GretagMacbeth L*a*b* D50 data, sRGB":
> http://www.babelcolor.com/main_level/ColorChecker.htm#ColorChecker_images).
> All colors are exactly the same as specified in ColorChecker.cie file, after
> conversion from Lab to sRGB using Bradford adaptation from D50 to D65.
sRGB is too small to encode the cyan patch on a ColorChecker -- you'd need a
negative red value.
Bruce Lindbloom has some excellent resources on his site, including all sorts
of different things presentations of the ColorChecker and its values.
Cheers,
b&
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