I did something slightly similar to this for class project years ago. I think my project was called "Object Removal Detection in a Retail Environment". I wasn'

I did something slightly similar to this for class project years ago. I think my project was called "Object Removal Detection in a Retail Environment". I wasn't trying to detect which item was removed, just that an item was removed, so it was a good bit simpler. I was using Matlab to analyze with old school computer vision algorithms to analyze the video (this was before deep learning was common). It mostly worked--it could highlight when an item was removed from a shelf, but it wasn't useful enough for much other than maybe helping security to manually review tapes for evidence of shoplifting.