[michaelbuckbee]

This is years ago and not my specialty, but I worked with a product line that manufactured what were essentially highly precise plastic washers. As they came off the line there was a clever bit of mechanical disbursement that slowly dropped them onto a conveyor under which a flashing light sync'd with a digital camera system took pictures.

Because all of the factors are known you could almost do pixel counts and compare to "true" circles (no need for AI models), any washers that didn't meet the critera were pneumatically puffed off of the line from an air hose.