PHP Manual
Gmagick
Enhances the contrast of a color image

Gmagick::normalizeimage

(PECL gmagick >= Unknown)

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

说明

public 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.

参数

channel: Identify which channel to normalize

返回值

The Gmagick object on success

错误／异常

错误时抛出 GmagickException。

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