Building Earth Observation Cameras

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Appendix: Representative Imageries

We shall present here representative imageries from some of the Earth obser-

vation cameras. Imageries can be represented as black and white when only

one spectral band is used or as a color picture by combining two or more

spectral bands. In a black-and-white picture, different digital values are seen

in different gray tones. A color picture is made of three primary colors: red,

green, and blue. When we have a mixture of different proportions of these

primary colors, we get different color shades. In principle, imagery from any

three spectral bands can be combined to generate color pictures. When the

im