19 February 2013 Hue processing in tetrachromatic spaces
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We derive colour spaces of the hue-colourfulness-luminance type, on the basis of a four-dimensional hypercube. We derive a chromatic 2D hue that goes together with chromatic saturation and luminance, a toroidal hue that goes together with a toroidal saturation and colourfulness, and also, a 3D tint that goes together with colourfulness.
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Alfredo Restrepo, Alfredo Restrepo, } "Hue processing in tetrachromatic spaces", Proc. SPIE 8655, Image Processing: Algorithms and Systems XI, 865507 (19 February 2013); doi: 10.1117/12.2003216; https://doi.org/10.1117/12.2003216

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