London: Analysis of selfies can prove "very rich" as a data source, both in terms of what they could reveal about different cultures in different cities and illustrating how people wanted to be perceived, according to a data project.

Using facial-recognition software and ranking the most happy as 1 and the least as 0, a team of data scientists, designers and researchers collected 152,462 Instagram pictures tagged around London's Somerset House over the period of one week, 640 of which were deemed to be selfies, the Guardian reported.