Number of filtering iterations. A value between 2 and 4 is usually enough. Default 3 Value range 1 • • 5.
Blur radius
gdouble
Spatial standard deviation of the blur kernel, measured in pixels. Default 30.00 Value range 0.00 • • 1000.00.
Edge preservation
gdouble
Amount of edge preservation. This quantity is inversely proportional to the range standard deviation of the blur kernel. Default 0.80 Value range 0.00 • • 1.00.