文字
Imagick::getImageExtrema
(PECL imagick 2.0.0)
Imagick::getImageExtrema — Gets the extrema for the image
说明
array Imagick::getImageExtrema
( void
)
Gets the extrema for the image. Returns an associative array with the keys "min" and "max".
返回值
Returns an associative array with the keys "min" and "max".
错误／异常
错误时抛出 ImagickException。