2 ms·
> the ratio of perceptually distinct steps around a hue circle to those directly across through gray is greater than would be expected as a circle in an ordinar
by enriquto 6y ago
> the ratio of perceptually distinct steps around a hue circle to those directly across through gray is greater than would be expected as a circle in an ordinary Euclidean space.
I have trouble understanding the precise meaning of this sentence. Can it be formalized in standard terms from differential geometry? For example, than the color space has negative curvature? (As opposed to the surface of the sphere, where circles are shorter than πr^2, so it has positive curvature).
- OscarCunningham 6y ago> Can it be formalized in standard terms from differential geometry? For example, than the color space has negative curvature? You're right that it can be formalised in terms of curvature. But we can't say that it has negative curvature because the curvature is nonconstant. It in fact has positive curvature in some regions and negative in others.