I'm not sure who created this smart trashcan, but I did find a "making of" video. The narration and subtitles are in Japanese, so my details are a little sketchy. But from what I can tell based on the video, that is no ordinary trashcan. It's been hacked - turned into a robot, basically. In addition to motors, wheels, and a battery, there's also a wireless connection so the trashcan can be controlled from a computer.
The operation of the smart trashcan is pretty simple. There's an app running on the PC which takes the data from the Kinect, crunches it, and sends commands to the smart trashcan. The trashcan is maneuvered so it ends up below the piece of trash before the trash hits the ground.
Simple, yet practical.
I'd like to see this idea be adapted to include a foam dart gun like the one at right. It's a USB powered dart cannon which incorporates a webcam. I can't find a place to buy it online, but the thought that it might be used to shoot down trash has a lot of appeal.
found via eBookPorn