Imagick::getImageChannelExtrema
(No version information available, might be only in CVS)
Imagick::getImageChannelExtrema — Gets the extrema for one or more image channels
Description
array Imagick::getImageChannelExtrema
( int $channel
)
WarningThis function is
currently not documented; only its argument list is available.
Gets the extrema for one or more image channels. Return value is an
associative array with the keys "minima" and "maxima".
Parameters
-
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. Defaults to Imagick::CHANNEL_ALL. Refer to this
list of channel constants.
Return Values
Returns TRUE on success.
Errors/Exceptions
Throws ImagickException on error.
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