Okay, just post an image about as wide as this with a thickened jagged outline. Here's one for which I just ran the outline and pasted it right over the old one. So post something about this size (700 to 800 pixels wide), and I'll isolate the outline, run it, and paste it right onto your image to replace the jaggy. My LCARS computers are all old machines without huge memory. So they can't handle really huge images.
This was done with mild oversampling plus weighting, which seems to beat out the various conventional antialiasing algorithms.
Don't look at the naked version: