Surveying An Entire City: The Case of Detroit

Detroit once bustled with business and manufacturing, but unlike many other cities of similar size, has seen population decline since the 1950s. As people left, and city blocks were abandoned, it became increasingly difficult to keep track of the over 400,000 parcels of land within its limits, especially with an antiquated computer system. It is estimated that there are some 80,000 or more abandoned buildings.

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