Re: Humans (and cameras and scanners) do not have a color gamut (?)
Re: Humans (and cameras and scanners) do not have a color gamut (?)
- Subject: Re: Humans (and cameras and scanners) do not have a color gamut (?)
- From: Graeme Gill via colorsync-users <email@hidden>
- Date: Fri, 10 Jan 2020 10:07:56 +1100
Henry Davis via colorsync-users wrote:
> Does a 'colorblind' human have a diminished gamut with regard to his input
> 'devices'?
As before, it comes down to your definition of "gamut". For a
Protanope/Deuteranope/Tritanope observer, their spectral gamut is one
whole dimension less than most humans.
A two channel sensor certainly can't distinguish a full range
of color (where "color" means a normal human observers perception
of light). But this range can't be characterized by a neat bounding
box in tri-stimulus space called a "gamut".
It can only be characterized by an accuracy limit boundary drawn in
spectral space, that is a property of both the sensor itself, and
whatever mechanism (i.e. profile) used to convert the sensor signals
into color values.
It's unlikely that there is a corresponding 3 dimensional color
volume, since the dimensionality of the spectral space is much
higher, making a 1:1 mapping topologically impossible. The
best you could do is color + extra dimensions. i.e. a particular
color may be out of gamut when it has one spectral composition,
but in gamut when it has another. The spectral composition
forms the extra dimensions of such a "color gamut" representation.
Cheers,
Graeme Gill.
_______________________________________________
Do not post admin requests to the list. They will be ignored.
colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden