[argyllcms] Re: Comparison of Color Profiles to Human Perceptual Gamut
- From: Ben Goren <ben@xxxxxxxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Mon, 31 Jan 2022 17:02:45 -0700
On Jan 31, 2022, at 4:22 PM, Mizen Mark ("MMizen")
<dmarc-noreply@xxxxxxxxxxxxx> wrote:
I am looking for a text file or color profile that reflects the human visual
perceptual gamut so that I can compare the human visual gamut to my device
profile.
The way you phrased that suggests to me that you’re new to color science. So,
this isn’t exactly the answer to the question you asked, but it’s the answer to
the question you might think you have asked.
What you’re essentially seeking is the data for what’s termed the “standard
observer.”
As the saying goes, the great thing about standards is there’re so many to pick
from. In this case, though, that’s more of a feature than a bug. For one thing,
no two people perceive color exactly the same; for another, the same person
will perceive color differently depending on the environment / setting. And, to
top it all off, researchers keep doing more research and refining previous
results.
But!
Ye Olde Anciente CIE 1931 Color Space is the great granddaddy of them all, and
still the most widely used. Why? Because, overwhelmingly, “it just works.”
Though it’s certainly not perfect, it’s awfully darned good.
It also helps that its variations from perfection are more than dwarfed by
variations between, for example, what you’d experience from viewing the same
work of art under two different types of light bulbs (say, one fluorescent and
the other LED) you might buy at the local hardware store.
The Wikipedia article is a great starting point:
https://en.wikipedia.org/wiki/CIE_1931_color_space ;
<
https://en.wikipedia.org/wiki/CIE_1931_color_space>
Somewhere on the CIE Web site is a spreadsheet with the actual original tabular
data, if you think you actually need it, but you probably don’t …
… because what you’re probably actually looking for is a chromaticity diagram
such as in the examples in that Web page. And whatever software you used to
generate your device profile can probably create such a diagram for you.
(And what you probably _really_ care about are the colors your display can’t
reproduce. But why you care about those colors and what you’re going to do
about them … that’s an entirely different subject.)
Cheers,
b&
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