imagick_sharpen
(PECL)
imagick_sharpen -- Sharpen image
说明
bool
imagick_sharpen ( resource image, float radius, float sigma )
参数
image
Image handle
radius
Radius of the pixel neighborhood not counting the center pixel
sigma
Standard deviation of the Laplacian in pixels
返回值
如果成功则返回 TRUE,失败则返回 FALSE。