Imagick::getImageChannelRange
(PECL imagick 2.2.1)
Imagick::getImageChannelRange — Gets channel range
Description
array Imagick::getImageChannelRange
( int $channel
)
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.