OPTI 200 Lecture Notes - Lecture 21: Primary Color, Cyan
30 Aug 2018
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Can change the amount of reflected light by making the surface less reflecting and by changing the overall illumination. Color tree - colors arranged according to their hue, lightness, and saturation. With screen - a screen that diffusely reflects all visible wavelengths equally. Blue, green, and red = white - flat intensity curve. Complementary colors - two colors when added together that equal white. Metamers - two colors that look alike even though they have different intensity distributions. Additive mixtures of any two colors lie on a straight lines connecting those colors. The complement of any color is found by extending a straight line from that color through white and to the opposite side of the horseshoe. Blue green and red are the additive primary colors. Simple addition occurs whenever two different light sources illuminate the same region. Partitive mixing occurs when lights of different colors place small separate sources next to each other.
