They're everywhere: modern self portraits shrunk down to fit the size of a mobile screen.
Better known as a selfie.
Stanford University Ph.D student Andrej Karpathy wanted to figure out what makes one selfie better than the rest with a visual recognition computer process, so he ran over 2 million photos tagged as selfies through the system.
The system, Convolutional Neural Network, or ConvNets for short, calculated how many people have seen and liked each photo, and Karpathy normalized the results based on the followers each user had.
After creating this rubric, Karpathy entered in another 50,000 new photos and had ConvNets order them from "best" to "worst" according to his algorithm. One key finding was that the style of the image is more important than the raw attractiveness of the person.
Wondering if your selfies pass the test? Karpathy created a Twitter account that rates your selfie for you.
Here are some of his most interesting findings, according to his blog:
Females: Women are consistently ranked higher than men. There were no men on the top 100 "best" photos produced by ConvNets
Face occupies about 1/3 of the frame: The top photos showed faces positioned in the center and occupying about 1/3 of the frame. In many photos, the head was slightly tilted.
Forehead cut-off: At least for women, cutting off the forehead seemed like a popular strategy. Especially with long hair strands running down the shoulders.
Oversaturate the face: An over-saturated face makes the photo more uniform.
Filters and borders: Black and white photos did very well and most top images contained a filter that decreases the contrast. Horizontal or vertical white borders also made a frequent appearance on the top photos by ConvNet.
Low lighting: Darker photos which appear more grainy were ranked as the least appeal photos.
Zoomed in face: Such a close up view was a turn off and resulted in some of the worst photos.
Group selfies: While Ellen Degeneres and friends had one of the greatest selfies of all time at the Oscars in 2014, this practice is not commonly viewed as the best selfie practice. Karpathy suggests to "keep it simple and take up all the space yourself," presumably, with your head partially cut off.