The Imagick class
PHP Manual

Imagick::normalizeImage

(PECL imagick 2.0.0)

Imagick::normalizeImageEnhances the contrast of a color image

说明

bool Imagick::normalizeImage ([ int $channel = Imagick::CHANNEL_ALL ] )
Warning

本函数还未编写文档,仅有参数列表。

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

参数

channel

Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.

返回值

Returns TRUE on success.


The Imagick class
PHP Manual