Adjusts the levels of a particular image channel
$channel
Adjusts the levels of a particular image channel by scaling the minimum and maximum values to the full quantum range.
channel
Which channel should the auto-levelling should be done on.
成功した場合に true を返します。
true
例1 Imagick::autoLevelImage
<?phpfunction autoLevelImage($imagePath) { $imagick = new \Imagick(realpath($imagePath)); $imagick->autoLevelImage(); header("Content-Type: image/jpg"); echo $imagick->getImageBlob();}?>