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Cropped and rotated Gender and age profiles per city Case by case inspection of photos can reveal a lot of detail, but it is difficult to quantify the patterns observed. Do New Yorkers or Berliners look older? Here are the results: Smile distributions by gender and city We can also the determine the facial expressions of the selfies in a city — who smiles the most, and who has more reserved looks?
Do angry people tilt their heads more strongly? And what is a characteristic mood for people in Moscow?
How we collected and filtered the data To locate selfies photos, we randomly selectedphotos 20, photos per city from a total of ' images we collected on Instagram. For these, we asked Mechanical Turk workers the simple question "Does this photo shows a single selfie"? We then selected top photos for each city i.
We submitted these photos to Mechanical Turk again, asking three "master workers" i. On the resulting set of selfie images, we ran automatic face analysis, supplying us with algorithmic estimations of eye, nose and mouth positions, the degrees of different emotional expressions, etc.
As the final step, one or two members of the project team examined all these photos manually. While most photos were tagged correctly, we found some mistakes.
We wanted to keep the data size the same to make visualizations comparableso our final set contains selfie photos for every city. Significantly more women In every city we analyzed, there are significantly more women selfies than men selfies from 1. Moscow is a strong outlier - here, we have 4.
A young people's sport?
Most people in our photos are pretty young Bangkok is the youngest city Men's average age is higher than that of women in every city. Surprisingly, more older men post selfies on Instagram than women. Bangkok, Sao Paulo are all smiles Our mood analysis revealed that you can find lots of smiling faces in Bangkok 0.Selfiecity investigates selfies using a mix of theoretic, artistic and quantitative methods.
We present our findings about the demographics of people taking selfies, their poses and expressions.; Rich media visualizations assemble thousands of photos to reveal interesting attheheels.com interactive selfiexploratory allows you to navigate the whole set of photos.
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