Color Algebra
- S = P, means spectrum S and spectrum P are perceived as the same color
- if (S = P) then (N + S = N + P)
- if (S = P) then aS = aP, for scalar a
- It is meaningful to write linear combinations of colors T = aA + bB
- Color percepion is three-dimensional, any color C can be constructed as the superposition
of three primaries:
C = rR + gG + bB
- Focus on "unit brightness" colors, for which r+g+b=1, these lie on a plane in 3D color space
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