Machine Vision Algorithm Learns to Recognize Hidden Facial Expressions

Most people are good at recognizing the ordinary emotions on other people’s faces. But there are another set of facial expression that most people are almost entirely unaware of. In the late 1960s, psychologists discovered that when humans try to hide their emotions, they often display their real feelings in “microexpressions” that appear and disappear in the blink of an eye. These fleeting facial expressions have fascinated psychologists and the general public ever since. It turns out that while most people are entirely oblivious to microexpressions, a tiny subset of individuals can spot them accurately and use them to tell when people are hiding their true feelings or when they are downright lying. A significant industry has grown up that focuses on training people to be better at recognizing microexpressions.…


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