Imagick::modulateImage

(PECL imagick 2, PECL imagick 3)

Imagick::modulateImage — Control the brightness, saturation, and hue

Description

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

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.

Parameters

brightness
saturation
hue

Return Values

Returns true on success.

Examples

Example #1 Imagick::modulateImage()

<?php
function modulateImage($imagePath, $hue, $brightness, $saturation) {
$imagick = new \Imagick(realpath($imagePath));
$imagick->modulateImage($brightness, $saturation, $hue);
header("Content-Type: image/jpg");
    echo $imagick->getImageBlob();
}

?>

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User Contributed Notes 1 note

down

-5

Anonymous ¶

15 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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