On 12/1/2016 4:13 PM, clipka wrote:
> Am 01.12.2016 um 21:30 schrieb Mike Horvath:
>> Overhead view of the sRGB gamut contained in an CIELCh Cylinder.
>
>> 2. R, G and B don't seem equidistant around the circumference.
>
> That's why it's L*C*h*, not LCH.
>

What does that mean?

> To my knowledge, the L*a*b* colour space (which is just the cylindrical
> parameterization of L*C*h*) was designed for the purpose of
> quantitatively measuring the perceived difference between two similar
> colours.
>

L*a*b* is rectilinear, L*C*h* is cylindrical.

> All other properties of the colour model are secondary to that feature.
> Most notably, it is even unsuited for quantitiatively measuring the
> perceived difference between very distinctive colours.
>
> Another side effect is that the L*C*h* hue parameter has nothing to do
> with the hue known from the HSV and HSL colour models.
>

It's pretty useless to me in that case. :(

> (That said, your conversion formulae may still be incorrect. The
> pictures on Wikipedia agree with your representation, but that obviously
> doesn't mean a thing in this particular case ;))
>

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