[malandrew]

It seems like this should be super easy to spot by outfitting X-ray machines with computer vision that can compare shapes/outlines from the X-ray image with a massive catalog of 3D printed gun schematics. Of course this would only help with assembled guns, but it's a step in the right direction.

[m0nastic]

You would then basically have the airport screener version of Antivirus software (signature-based).

I suspect you'd end up having all the same problems that Antivirus software has (basically an arms race, I guess quite literally).

[hobs]

Would it? Wouldn't the catalog be enormous, and the model could be from almost any angle? Not trying to call BS, I am not a computer vision expert, its just whenever someone says something like this I always wonder the actual feasibility.

[PavlovsCat]

I think it was in the 90s when I read about neural nets being used to correlate air plane type to a static silhouette (might have been radar) from any angle. Of course, airplanes can't be slightly modified and printed out in minutes, so I'm not sure this would work here, or how much of a PITA constantly retraining the neural net when new schematics are made would be.

[hobs]

That's pretty cool yo, thanks for illuminating!