[edit] Last updated: Fri, 17 May 2013

Imagick::modulateImage

(PECL imagick 2.0.0)

Imagick::modulateImage — Control 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.

add a note User Contributed Notes Imagick::modulateImage - [1 notes]

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Anonymous ¶

4 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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