Computer Vision Foundations · free preview
Light as a Spectrum
Light is a mixture of wavelengths, its power spectrum determines color, and a coarse three-band model explains the familiar color names.
1. Light is a mixture
Light is a mixture
2. Prisms and diffraction take blends apart
Prisms and diffraction take blends apart
3. The power spectrum determines color
The power spectrum determines color
4. A coarse three-band model
A coarse three-band model
5. Why the second prism settles it
Newton sent the red band from a prism through a second prism and observed no further splitting. What does that establish about the colors of the rainbow?
6. Reading the eight combinations
In the three-band model with blue, green, and red bands, which combination produces yellow, and why does the name make sense?
7. Naming a two-band light
A light has power in the blue band and the green band, and none in the red band. Write the color name of this light as one word.
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