Interpretation key to projection success

I have previously said that I felt that projections that a have a critical content closely associated with place and/or are tightly configured to the tectonic of the surface projected onto are more successful - ie that the layer they add to a place is principally interpretive and that this therefore should be an important frame in their critique.

An old favourite of mine is Scott Snibbe's voronoi Boundary Functions - an interactive projection that mapped personal space. This has often been in my mind as a benchmark - interactive and interpretive, with a legible tectonic closely related to the voronoi system at a human scale. The voronoi diagram is highly suited to this purpose - it is simply a boundary drawn perpendicular halfway between points (the points are people in this case).

Scott Snibbe, Boundary Functions 

Following are two student projects included in Output 09 that are variations on this theme. Frederic Eyl, Gunnar Green and Richard The's Sonderzug is a proposal to remember, as a ethereal trace, trains that deported Jewish people to ghettos, while Oliver Ellger and Jeffrey Gold's Ipunkt is a proposal for a fairly impractical personal navigation device for museums and galleries.

Frederic Eyl, Gunnar Green and Richard The, Sonderzug - ghetto destination projected from Berlin bridge

Frederic Eyl, Gunnar Green and Richard The, Sonderzug - ghost train

Oliver Ellger and Jeffrey Gold, Ipunkt