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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