Gmagick::levelimage
Gmagick::levelimage
(PECL gmagick >= Unknown)
Gmagick::levelimage — Adjusts the levels of an image
Description
public mixed Gmagick::levelimage ( float $blackPoint , float $gamma , float $whitePoint [, int $channel = Gmagick::CHANNEL_DEFAULT ] )
Adjusts the levels of an image by scaling the colors falling between specified white and black points to the full available quantum range. The parameters provided represent the black, mid, and white points. The black point specifies the darkest color in the image. Colors darker than the black point are set to zero. Mid point specifies a gamma correction to apply to the image. White
