Gmagick
PHP Manual

Gmagick::normalizeimage

(PECL gmagick >= Unknown)

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

Description

public Gmagick Gmagick::normalizeimage ([ int $channel ] )

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

Parameters

channel

Identify which channel to normalize

Return Values

The Gmagick object on success

Errors/Exceptions

Throws an GmagickException on error.

Gmagick
PHP Manual