August 2013
Beginner to intermediate
1264 pages
52h 45m
English
book
Hughes/Computer Graphics, 3/E
by Kurt Akeley, James D. Foley, David F. Sklar, Morgan McGuire, John F. Hughes, Andries van Dam, Steven K. Feiner
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Chapter 28. Color
Strictly speaking, the rays are not colored.
Optics, Isaac Newton
28.1. Introduction
Most people are able to sense color—it’s the sensation that arises when our eyes are presented with different spectral mixes of light. Light with a wavelength of near 400 nanometers makes most people experience the sensation “blue,” while light with a wavelength near 700 nm causes the sensation “red.” We describe color as a sensation because that’s what it is. It’s tempting to say that the light arriving at our eyes is colored, and we’re just detecting that property, but this misses many essential characteristics of the perceptual process; perhaps the most significant one is this: Two very different mixes of light of different frequencies can ...
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