Gmagick::motionblurimage()
(PECL gmagick >= Unknown)
Simulates motion blur
说明
public Gmagick::motionblurimage(float $radius,float $sigma,float $angle): Gmagick
Simulates motion blur. 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 MotionBlurImage()selects a suitable radius for you. Angle gives the angle of the blurring motion.
参数
- $radius
The radius of the Gaussian, in pixels, not counting the center pixel.
- $sigma
The standard deviation of the Gaussian, in pixels.
- $angle
Apply the effect along this angle.
返回值
The Gmagick object on success
错误/异常
错误时抛出GmagickException。