Imagick::convolveImage
(PECL imagick 2, PECL imagick 3)
Imagick::convolveImage — Applies a custom convolution kernel to the image
Beschreibung
$kernel
, int $channel
= Imagick::CHANNEL_DEFAULT): boolApplies a custom convolution kernel to the image.
Parameter-Liste
-
kernel
-
The convolution kernel
-
channel
-
Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.
Rückgabewerte
Liefert true
bei Erfolg.
Fehler/Exceptions
Wirft ImagickException bei Fehlern.
Beispiele
Beispiel #1 Imagick::convolveImage()
<?php
function convolveImage($imagePath, $bias, $kernelMatrix) {
$imagick = new \Imagick(realpath($imagePath));
//$edgeFindingKernel = [-1, -1, -1, -1, 8, -1, -1, -1, -1,];
$imagick->setImageBias($bias * \Imagick::getQuantum());
$imagick->convolveImage($kernelMatrix);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>