This is a presentation for Oxford Geek Nights 34.
It covers an approach for recognising objects in images that we used for the White October christmas party.
See this online at http://benjaminbenben.com/ping-pong/public - press 'n' & 'p' to go through the presentation (some slides are vertical, so won't be shown with ← →).
To run this locally you need to run it through a web server (as there is a little bit of getUserMedia). An easy way to do this is:
python -m SimpleHTTPServer
which will serve the presentation at http://localhost:8000/public
party photo via @garrettc