Building Rome in a Day

This is truly amazing.

The data set consists of 150,000 images from Flickr.com associated with the tags 'Rome' or 'Roma'. Matching and reconstruction took a total of 21 hours on a cluster with 496 compute cores. Upon matching, the images organized themselves into a number of groups corresponding to the major landmarks in the city of Rome. Amongst these clusters can be found the Colosseum, St. Peter's Cathedral, Trevi Fountain and the Pantheon. One of the advantages of using community photo collections is the rich variety of view points that these photographs are taken from. A striking example of this is the reconstruction of the interior of St. Peter's Cathedral shown below.

See more cities
Via