Visually Indicated Sounds
vis.csail.mit.edu
vis.csail.mit.edu
I can totally understand if the authors wanted to make sure it doesn't pick the exact same sample multiple times in a row and penalized duplicates, but I don't see any mention of that in the paper, and even if they did, I'd expect to see subsequent matches from the same training video, rather than picks from completely different videos.
It also reminded me of this GIF: How to get a song stuck in someones head within 3 frames: http://imgur.com/gallery/c18TRq0
Would also be a nice tool for professional foley specialists to automate the process.