Imagick::autoLevelImage
(PECL imagick 3 >= 3.3.0)
Imagick::autoLevelImage — Description
Beschreibung
$channel
= Imagick::CHANNEL_DEFAULT): boolAdjusts the levels of a particular image channel by scaling the minimum and maximum values to the full quantum range.
Parameter-Liste
-
channel
-
Which channel should the auto-levelling should be done on.
Rückgabewerte
Liefert true
bei Erfolg.
Beispiele
Beispiel #1 Imagick::autoLevelImage()
<?php
function autoLevelImage($imagePath) {
$imagick = new \Imagick(realpath($imagePath));
$imagick->autoLevelImage();
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>