Gmagick::edgeimage()
(PECL gmagick >= Unknown)
Enhance edges within the image
说明
public Gmagick::edgeimage(float $radius): Gmagick
Enhance edges within the image with a convolution filter of the given radius. Use radius 0 and it will be auto-selected.
参数
- $radius
The radius of the operation.
返回值
The Gmagick object with edges enhanced.
错误/异常
错误时抛出GmagickException。