Yes, that is the correct source image.
This was not made by StippleGen, but with a similar program that we have written in Processing, which creates “string art” style drawings like that. We have not yet released the software — we are still tweaking it and it’s pretty rough around the edges — but if you (or any other AxiDraw owner) would like to give it a try at this early stage, we would be happy to put together a beta version that you can try out. Please use our contact form to make the request.
Also, secret StippleGen feature: press the ‘x’ key to increase the allowable stipple count. Just beware that things are slower (and less stable) with higher stipple count.