Seen a similar project on github described here: https://link.medium.com/VTkd11UH7ib, also based on SSDMobileNet.

I've used SSDMobileNet for real-world applications, it's absolutely terrible for general use. It is just a technology showcase. But it is interesting we can lego-together a neural net fairly easily these days.

Raspberry instead of tower PC and no more serial cable, impressive improvement over just 21 year. We have arrived at a level technology that we have only seen in “The Jetsons”.