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> fantastically counterintuitive ways your eye fools you without you even noticing

It does not have to be "fooling" when if fact it's just part of the processing pipeline.

> The fact that colors influence colors around them means that there are far more than 256^3 viewable colors: the spatial axis is like a fourth channel.

No it's not: it may as well be that the function applied to the perceived colours, while takes neighbours as an input - still outputs the same 256^3 colours.




> No it's not: it may as well be that the function applied to the perceived colours, while takes neighbours as an input - still outputs the same 256^3 colours.

Kinda like those post-processing shader effects (like blur etc) that look at neighbouring pixels to output a 256^3 colour value for the center pixel. The pixel value never leaves the 256^3 range, but its value is adjusted based on what surrounds it.




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