Projection augmented sand models

For participatory planning activities, spatial datasets and fire spread simulations are displayed as a projection onto sand that is shaped to fit the terrain. Running the model over a 3D terrain to helps us think about how fire is affected by topography and vegetation. A key component of this representation is the way it allows us to share ideas and knowledge.

The following pictures show how this process was used to assist fire management planning for Dhimurru land management corporation in East Arnhemland – Northern Territory.

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Incorporating infrared an sensor on the projector allows the projected surface to gain interactive functionality. the picture below shows the fire model being initiated by the flame from a cigarette lighter.


 

The sand model has also been used for undergraduate teaching into understanding landscape processes. The image below shows students building up the sand model. IMG_5739.JPG

With a shaded relief projection, the sand-scape takes on the illusion of a highly detailed physical elevation model.

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It is possible to display an interrogate multiple spatial datasets over the sand display before ‘igniting’ the fire simulation.


The image below shows the use of lime as the substrate for projection. In this case, a projected segment flow model is running over the top of the lime. This was exploring catchment wide sedimentation impacts.

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The images below shows the use of the 3D Sand based simulation with a Netlogo flow modelling to simulate Volcanic lava flow. This demonstration was at eh National University of Mexico (UNAM) at CIGA (Environmental Geography Research Institute).

 


A schematic diagram of the augmented projection set-up.

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