Diagnosing an autism spectrum disorder (ASD) in young children is tricky, but the earlier a child can begin speech therapy and get help learning social and communication skills, the better. Many different symptoms may suggest a child has an ASD, but they are subtle. It usually takes an experienced doctor to spot the signs by analysing video footage of the child playing - a costly and time-consuming process.
To find out if a computer can automate all or part of this process, Guillermo Sapiro, Nikolaos Papanikolopoulos and colleagues have fitted the nursery with five Kinect depth-sensing camera rigs to monitor groups of around 10 children aged between 3 and 5 years old as they play.
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