Imagick::getImageChannelExtrema

(PECL imagick 2.0.0)

Imagick::getImageChannelExtrema — Gets the extrema for one or more image channels

说锟斤拷

Imagick::getImageChannelExtrema ( int $channel ) : array

Gets the extrema for one or more image channels. Return value is an associative array with the keys "minima" and "maxima".

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channel

Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.

锟斤拷锟斤拷值

锟缴癸拷时锟斤拷锟斤拷 TRUE锟斤拷

锟斤拷锟斤拷锟届常

锟斤拷锟斤拷时锟阶筹拷 ImagickException锟斤拷