Imagick::embossImage

(PECL imagick 2.0.0)

Imagick::embossImage — Returns 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 .