(PECL imagick 2, PECL imagick 3)
Imagick::getImageExtrema — Gets the extrema for the image
This function has been DEPRECATED as of Imagick 3.4.4. Relying on this function is highly discouraged.
public Imagick::getImageExtrema ( ) : array
Gets the extrema for the image. Returns an associative array with the keys "min" and "max".
Returns an associative array with the keys "min" and "max".
Throws ImagickException on error.
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https://www.php.net/manual/en/imagick.getimageextrema.php