Rapid 3-D Urban Modelling

"The concept is similar to building a virtual reality model, but the process is very different...Car-hire companies or cellphone providers could use similar technology to transmit up-to-date 3D maps to their customers to help them navigate through strange cities. Emergency workers could use the models to figure out the best way to respond to natural disasters or terrorist attacks. Urban planners could even look at a series of models collected over time to see how the layout of their city has evolved."