Gmagick::gammaimage

(PECL gmagick >= Unknown)

Gmagick::gammaimage — Gamma-corrects an image

Descrierea

public Gmagick::gammaimage ( float $gamma ) : Gmagick

Gamma-corrects an image. The same image viewed on different devices will have perceptual differences in the way the image's intensities are represented on the screen. Specify individual gamma levels for the red, green, and blue channels, or adjust all three with the gamma parameter. Values typically range from 0.8 to 2.3.

Parametri

gamma: The amount of gamma-correction.

Valorile întoarse

The gamma corrected Gmagick object.

Erori/Excepții

Emite o GmagickException în caz de eroare.