# Gmagick::embossimage

(PECL gmagick >= Unknown)

Gmagick::embossimage — Returns a grayscale image with a three-dimensional effect

### 说明

public Gmagick::embossimage(float `$radius`, float `$sigma`): Gmagick

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

The embossed Gmagick object.

### 错误／异常

错误时抛出 GmagickException。

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