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<Imagick::getImageChannelDistortionsImagick::getImageChannelKurtosis>
^ImagickLast updated: Mon, 26 Oct 2026

Imagick::getImageChannelExtrema

(PECL imagick 2, PECL imagick 3)

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

Warning

This function has been DEPRECATED as of Imagick 3.4.4. Relying on this function is highly discouraged.

Description

public function 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".

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. Refer to this list of channel constants.

Return Values

Returns true on success.

Errors/Exceptions

Throws ImagickException on error.


<Imagick::getImageChannelDistortionsImagick::getImageChannelKurtosis>
^ImagickLast updated: Mon, 26 Oct 2026