Imagick::getImageChannelRange
(PECL imagick 2 >= 2.2.1, PECL imagick 3)
Imagick::getImageChannelRange — Gets channel range
Description
public Imagick::getImageChannelRange ( int $channel ) : array
Gets the range for one or more image channels. This method is available if Imagick has been compiled against ImageMagick version 6.4.0 or newer.
Parameters
-
channel -
Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channel constants using bitwise operators. Defaults to
Imagick::CHANNEL_DEFAULT. Refer to this list of channel constants
Return Values
Returns an array containing minima and maxima values of the channel(s).
Errors/Exceptions
Throws ImagickException on error.
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https://www.php.net/manual/en/imagick.getimagechannelrange.php