Dragon Distort II Landscape by Wolfgang Halder

Dragon Distort II Landscape by Wolfgang Halder
http://www.filterforge.com/filters/16164.html

It is a technical term of the fractal that is rendered.

Quote: "The escape radius is a parameter used in iterating a point. It is the radius of a circle on the Complex Plane used as a boundary to determine when iteration can stop. The circle is centered at the origin. As soon as the iteration yields a value that falls outside the circle, iteration can stop and it has been determined that the point that was iterated is not a member of the fractal set.

The reason for having an escape radius is to prevent iteration from going on forever. The iteration is supposed to terminate when the iteration becomes unbounded, i.e. goes off to infinity. It is fairly straightforward to show that if a point ends up outside a radius then the iteration will go off to infinity."

Sorry, I think that is to technical, but thats the way it is. Just try it out.