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Facial Expression

Official Question Material
Prep: Varies

Official Audio Prompt

Is that person really glad to see me? Or are they just [blank] polite? Some people struggle to distinguish a [blank] grin from a truly happy smile. And computers have found this task even more difficult, that is, until researchers [blank] a program to detect when a smile is genuine.Visual computing researchers at the University of Bradford in the U.K. started with software for [blank] a changing facial expression. This program can examine a video clip of a human head and identify specific details around the eyes, cheeks and mouth. Then the program tracks the details moving relative to each other as the face smiles.Next, the scientists had their program [blank] two sets of video clips. In one, subjects performed posed smiles.

Sample Answer & Audio Transcript

Is that person really glad to see me? Or are they just being polite? Some people struggle to distinguish a fake grin from a truly happy smile. And computers have found this task even more difficult, that is, until researchers develop a program to detect when a smile is genuine.Visual computing researchers at the University of Bradford in the U.K. started with software for simulating a changing facial expression. This program can examine a video clip of a human head and identify specific details around the eyes, cheeks and mouth. Then the program tracks the details moving relative to each other as the face smiles.Next, the scientists had their program analyzing two sets of video clips. In one, subjects performed posed smiles.
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