CE#299: Is That a Smile? How Computers Recognize Expressions (NYT/Science)

A facial-recognition system developed at the M.I.T. Media Lab and commercialized by Affectiva tracks face movements and links them with a database of expressions. In the video below, the program tracks the distance traveled by the corners of the lip, and the angle of the movement, to calculate the chance that the expression is a smile. A probability of 60 percent or more indicates a smile.


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