Colour Science & Perception
what the eye settles, and what it cannot
Generator

One adapting colour, two answers

The left patch is what was stared at. The middle is the afterimage the cone-gain arithmetic predicts at 60 per cent adaptation; the right is the inverted code values. They are 27.8 ΔE00 apart. The gains that produced the middle patch are 0.82, 1.22, 3.77 on the long, medium and short cone classes — the reciprocal of what each class had been receiving, taken 60 per cent of the way.
One adapting colour, two answers. The left patch is what was stared at. The middle is the afterimage the cone-gain arithmetic predicts at 60 per cent adaptation; the right is the inverted code values. They are 27.8 ΔE00 apart. The gains that produced the middle patch are 0.82, 1.22, 3.77 on the long, medium and short cone classes — the reciprocal of what each class had been receiving, taken 60 per cent of the way.

Drawn at its defaults, in what the brain does that the numbers do not. It takes 5 options, and the essays below show what each placement asks of it.

Called by 1 essay

the blast radius of changing it

What the brain does

An afterimage is an adaptation

The demonstration everybody gives is an inverted image, which is a statement about a file format. Running the receptoral arithmetic instead puts the afterimage of a saturated red sixty degrees of hue away from the inverse — and outside what any display can show.

All 155 generators · what each essay asks for instead