(PECL gmagick >= Unknown)
Gmagick::charcoalimage — Simulates a charcoal drawing
Simulates a charcoal drawing.
radius
The radius of the Gaussian, in pixels, not counting the center pixel.
sigma
The standard deviation of the Gaussian, in pixels.
The Gmagick object with charcoal simulation.
Lança uma exceção GmagickException em caso de erro.