Adjustments
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Brightness
The brightness method adjusts the brightness of the Image. The method accepts a value between -100 and 100.
$image->brightness(-20);
Contrast
The contrast method adjusts the contrast of the Image. The method accepts a value between -100 and 100.
$image->contrast(20);
Gamma
The gamma method adjusts the gamma of the Image. The method accepts a value between 0.1 and 9.99.
$image->gamma(4.1);
Colorize
The colorize method colorizes the Image. The method accepts values between -100 and 100 for red, green and blue.
$image->colorize(100, 0, 0);