Imagick::modulateImage

(PECL imagick 2.0.0)

Imagick::modulateImageControl the brightness, saturation, and hue

Descrizione

bool Imagick::modulateImage ( float $brightness , float $saturation , float $hue )

Lets you control the brightness, saturation, and hue of an image. Hue is the percentage of absolute rotation from the current position. For example 50 results in a counter-clockwise rotation of 90 degrees, 150 results in a clockwise rotation of 90 degrees, with 0 and 200 both resulting in a rotation of 180 degrees.

Elenco dei parametri

brightness

saturation

hue

Valori restituiti

Restituisce TRUE in caso di successo.

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Anonymous
5 years ago
Here's a example of this function:

<?php
  $img
= new Imagick();
 
$img->readImage($image_file_name);
 
// leave hue at 100%, drop saturation by 100%, leave brightness at 100%
 
$img->modulateImage(100, 0, 100);
 
$img->writeImage($thumb_file_name);
 
$img->clear();
 
$img->destroy();
?>
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