Does a picture contain a knife? Let's find out with Artificial Intelligence!
I wrote a quick tutorial on HackerNoon which describes how I did this.
If you just want to run it then open up the Jupyter Notebook.
In its current form, it's not particularly useful but it could easily be put behind an API and allow security footage to detect whether a knife is present.
In my tests I was getting a 99.84% accuracy rate.
Make an issue and let me know! I always want to learn more 😀