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.