Teach AI dataset to identify specific objects on images

Job ID: 35663546

Budget: $250 – $750 USD

I need a solution where a well-trained AI can detect difference between images of:
- a person holds weapon in a crowded area
- no person holds weapon in a crowded area

It is something like a security check of a CCTV videostream.
You can choose any favourite platform, but it needs to be trainable further.

At first, I need to know an approximate time and price for this solution.