Seeing, measuring, and rendering colours
Introduction to colour science.
The colour stimulus – how to characterize colours – optical illusions – colour constancy – contrast – assimilation – after-images – the lilac chaser – the McCollough effect – historical notes – theory of colour vision – when do we see which colour? – additive and subtractive colour mixing – mixing by averaging – mixing of paints – primary colours – unique hues – colour mixing primaries – artists' colour schemes – psychological issues
Measurement of colour.
Basics of colour measurement – metameric match – valence of a stimulus – Grassmann's laws – colour matching functions – Helmholtz' parameters – choice of primaries – the standard observer – the CIE-diagrams – surface colours and colour filters – metamerism – colour solids, colour systems, sample collections – colour distances
On the screen – not so simple? – colour profiles and gamuts – brightness and colour steps – gamma correction – rendering on the screen: RGB values, HSB and HSL - printing: Cyan, Magenta, Yellow and blacK (CMYK) – colour management – colour fidelity
Decomposition of white light.
How does a spectrum look? – where is the yellow light? – historical note – the fundamental primary colours – aesthetic criteria
Simple observations with a prism.
Promenade for a while following J.W. v.Goethe's steps
Criticism of misleading colour websites.
Kueppers' Colour Theory: a fight against experimental data – Is there a shortcut to obtain RGB values?