Gmagick::normalizeimage

(PECL gmagick >= Unknown)

Gmagick::normalizeimage — Enhances the contrast of a color image

public function Gmagick::normalizeimage(int $channel = ?): Gmagick

Enhances the contrast of a color image by adjusting the pixels color to span the entire range of colors available.

The Gmagick object.

Throws an GmagickException on error.