Augmented Reality Projection Mapping Sandbox Real-Time Water Flow Simulation

“Video of a sandbox equipped with a Kinect 3D camera and a projector to project a real-time colored topographic map with contour lines onto the sand surface. The sandbox lets virtual water flow over the surface using a GPU-based simulation of the Saint-Venant set of shallow water equations.
We built this for an NSF-funded project on informal science education. These AR sandboxes will be set up as hands-on exhibits in science museums, such as Lawrence Hall of Science or the Tahoe Environmental Research Center.
The sandbox is based on the original idea shown in this video: youtube.com/watch?v=8p7YVqyudiE
The water flow simulation is based on the work of Kurganov and Petrova, “a second-order well-balanced positivity preserving central-upwind scheme for the Saint-Venant system.”