Studying topography with messy maps is now a thing of the past. Our amusing color-changing interactive augmented reality sandbox is a new great way to explain topography to children.

Augmented Reality (AR) is a set of new technologies that combine the real world with digital creations. In this new reality we can include images or 3D figures in real objects, we can interact with digital elements that appear to be in the real world or interact with real elements and obtain a digital response. That last option is what we used to create our augmented reality topography map.

We use a big box filled with special sand to recreate the surface we want to study. The students can interact with the sand and build whatever landscape or geological formation they want to. Meanwhile, a millimetrically adjusted 3D sensor monitores the sandbox and sends all the data to a powerful portable computer. A unix-based simulation software is then in-charged of creating a 3D model of the surface created in the box. An other program paints the 3D model with layers of different colors and creates a 2D image that is send to a projector. Finally, a few milliseconds after the process started, the image is projected in the sandbox, which turns into a responsive interactive 3D topography map that displays different colors at different heights. Moreover, after further development we have been able to recreate how water would behave in that surface.

Our colleagues of the CESAR educational project at ESAC currently use our augmented reality topography map as part of their “Topography Science Case”. Thanks to this device, students from different ages have fun while they learn about topographic maps and simulate with their own hands different geographic formations.



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