Gmagick
PHP Manual

Gmagick::gammaimage

(PECL gmagick >= Unknown)

Gmagick::gammaimageGamma-corrects an image

Описание

public void 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.

Параметри

gamma

The amount of gamma-correction.

Връщани стойности

The gamma corrected Gmagick object.

Грешки/Изключения

Throws an GmagickException on error.


Gmagick
PHP Manual