Gmagick::gammaimage

(PECL gmagick >= Unknown)

Gmagick::gammaimage — Gamma-corrects an image

Opis

public Gmagick Gmagick::gammaimage ( float $gamma )

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.

Parametry

gamma: The amount of gamma-correction.

Zwracane wartości

The gamma corrected Gmagick object.

Błędy/Wyjątki

Wywołuje wyjątek GmagickException w przypadku błędu.