What is it about?
The scientific community generally agrees on the theory, introduced by Riemann and furthered by Helmholtz and Schroedinger, that perceived color space is not Euclidean but rather, a three-dimensional Riemannian space. We show that the principle of diminishing returns applies to human color perception. This means that large color differences cannot be derived by adding a series of small steps, and therefore, perceptual color space cannot be described by a Riemannian geometry.
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Why is it important?
This finding is inconsistent with the current approaches to modeling perceptual color space. Therefore, the assumed shape of color space requires a paradigm shift. The paradigm of a Riemannian color space had been unchallenged for over 100 years.
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This page is a summary of: The non-Riemannian nature of perceptual color space, Proceedings of the National Academy of Sciences, April 2022, Proceedings of the National Academy of Sciences, DOI: 10.1073/pnas.2119753119.
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