Imagick
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Imagick::embossImage

(PECL imagick 2.0.0)

Imagick::embossImageReturns a grayscale image with a three-dimensional effect

说明

bool Imagick::embossImage ( float $radius , float $sigma )

Returns a grayscale image with a three-dimensional effect. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, radius should be larger than sigma. Use a radius of 0 and it will choose a suitable radius for you.

参数

radius

The radius of the effect

sigma

The sigma of the effect

返回值

成功时返回 TRUE

错误/异常

错误时抛出 ImagickException。


Imagick
PHP 手册