Imagick::getImageChannelRange

(PECL imagick 2.2.1)

Imagick::getImageChannelRange — Gets channel range

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Imagick::getImageChannelRange ( int $channel ) : array

Gets the range for one or more image channels. �˷�����Imagick����ImageMagick 6.4.0���ϰ汾����ʱ���á�

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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. ȱʡΪImagick::CHANNEL_DEFAULT. �ο��� ͨ�������б�

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Returns an array containing minima and maxima values of the channel(s).

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