Macrosystem Bluebox World Manuale Utente Scaricare il pdf (Pagina 33)

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Appendix B

Hue, saturation and brightness

The color that we perceive with our eye is

composed of three elements: brightness, hue

and saturation. Bluebox World allows specic

foreground objects to be selected by making use

of all three criteria:

Hue:

Hue refers to a specic color from the spectrum

of all existing colors, without considering

brightness or saturation. Hue therefore denes

the left pure color content, starting with the

three basic colors red, green and blue, and

continuing through if all the intermediate colors

(orange, yellow, purple or magenta).

Color saturation:

The strength or emphasis of a hue is referred

to as the saturation. In any hue appears more

intense as its saturation rises. In the opposite

direction, a hue becomes paler as the saturation

is reduced, until nally only grey remains

without any color information.

Brightness:

The brightness determines the luminous power

of a specic hue having a specic saturation.

100% brightness generates white, 0% produces

black, while 50% brightness corresponds to the

pure hue.

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