Comparing the TGD view of color perception to the geometric models of color perception

Gary Ehlenberger sent an interesting link related to the theories of color perception (see this ). It has been known for a long time that colors are not properties of the light or of any stimulus producing color sensation. The notion of color space tries to geometrize hue, lightness and saturation as attributes of color perception. Already Riemann suggested that the Riemannian geometry alone could…