Imagick::normalizeImage
Imagick::normalizeImage
(PECL imagick 2.0.0)
Imagick::normalizeImage — Enhances the contrast of a color image
Description
bool Imagick::normalizeImage ([ int $channel = Imagick::CHANNEL_ALL ] )
Enhances the contrast of a color image by adjusting the pixels color to span the entire range of colors available.
Parameters
channel
Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.
Return Values
Returns TRUE on success.
Examples
Example #1 Imagick::normalizeImage()
<?php
function normalizeImage($imagePath, $channel) {
$imagick = new \Imagick(realpath($imagePath)
$original = clone $imagick;
$original->cropimage($original->getImageWidth() / 2, $original->getImageHeight(), 0, 0
$imagick->normalizeImage($channel
$imagick->compositeimage($original, \Imagick::COMPOSITE_ATOP, 0, 0
header("Content-Type: image/jpg"
echo $imagick->getImageBlob(
}
?>
← Imagick::nextImage
Imagick::oilPaintImage →
© 1997–2017 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
