23:00 23 April 2009
Using geotag data attached to 35 million photos uploaded to Flickr, David Crandall and colleagues at Cornell University in Ithaca, New York, created accurate global and city maps and identified popular snapping sites.
Image 1 of 6
Many digital photos are now geotagged
– stamped with the latitude and longitude coordinates for the location where they were taken. David Crandall
and colleagues at Cornell University in Ithaca, New York, have analysed this data, using 35 million photographs uploaded to the Flickr website
Crandall's team found that the data offered a simple way to organise millions of photos on a global scale. Simply plotting that raw data onto an empty canvas revealed accurate maps, like this one of the 48 lower states of the US.
(Image: David Crandall)