The contest description says:
“We invite you to combine an RGB-D sensor (e.g. Kinect, PSDK5.0) with ROS to produce something new, interesting, and fun. It could be anything, from a novel robot control interface to a data-driven art project to pure computer vision. Bonus points if it's also useful (see below). We're offering $8K in prizes. We encourage participants to share, and our rules and judging will reward participants who act in the spirit of collaboration.”
Pretty sweet with $8K in prizes.