Munsell Colour System
Ever since I did perception experiments to see how one could differentiate colour Hues (using the HSB model) with my Colour Clock, I realised that we are not so good on the greens as the red/yellow (face) colours. Munsell defined a colour model using people rather than technology and the system is, I now believe, probably the best way to adjust images - but I've no idea how this could be implemented!
Actually Munsell was the first to separate hue, value, and chroma into perceptually uniform and independent dimensions back in the early 1900s. He produced a colour book which showed more colours than is possible on today's sRGB colour space, which has a limited colour gamut designed to match that of televisions and computer displays.
I have got a bit distracted by this thought and attempted to find his model defined in the RGB colour space. Although there are a number of sites showing his hues and conversion calculators; the examples did not agree when I downloaded them and compared their values.
So I wrote a wee program to display them (using formulae from easyRGB and the Munsell and Yxy equivalent values), which I shall add to my Colour Watcher in due course, and the results agreed with both the Coloroid and the X-Rite Colour calculator for Munsell values.
Here is my sRGB renditions of 7.5R.
But how does this model compare to the HSB one?
But I realised that viewing the results though a web browser did not adjust for colour profiles - and worse (for me) is that my Colour Watcher reads screen values, not file or colour space ones.
So another diversion before getting back to the paintings...