PSYC 212 Lecture Notes - Lecture 23: Receptive Field, Trichromacy, Categorical Perception
21 Apr 2016
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Figure 11. 18: through the pattern activity of the three cones that you can get color information, we take the color signal from two types of paper, red paper, illuminating it with sunlight (i. e. , broad spectrum). If we artificially create these patterns by just taking 3 wavelengths and vary the intensities, we can recreate artificially all the colors we can see. Pink and red vary by which of the following dimension in the hsv space: hue, saturation, intensity. If you de-saturate the color bring it closer to the center of the hsv cone/cylinder = pink. It"s another way of saying mixing red + white = pink. The only difference is that pink is closer to white on the same hue angle. Figure 11. 32: anything closer to white means you have less saturation, pink and red only vary by saturation, not hue.
