9/7/2001
CS
461, Copyright G.D. Hager
Color
receptors
“Red” cone
“Green” cone
“Blue” cone
Response of k’th cone =
Principle of univariance: cones give the same kind
of response, in different amounts, to different
wavelengths.
Output of cone is obtained by
summing over wavelengths.
Responses measured in a variety of ways
