Gmagick::gammaimage
Gmagick::gammaimage
(PECL gmagick >= Unknown)
Gmagick::gammaimage — Gamma-corrects an image
Description
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.
Parameters
-
gamma -
The amount of gamma-correction.
Return Values
The gamma corrected Gmagick object.
Errors/Exceptions
Throws an GmagickException on error.
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https://secure.php.net/manual/en/gmagick.gammaimage.php
