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Even for diehard sports fanatics, it can sometimes be quite difficult to tell which player is which, when watching a field, court or rink full of team athletes. While this can be merely frustrating for fans, it can have larger ramifications for referees or coaches, whose jobs depend on being able to know which players are doing what, at what time. Scientists from Switzerland’s École Polytechnique Fédérale de Lausanne (EPFL) have devised what could be a solution to that problem – it’s a system that continuously tracks each player, superimposing their number and jersey color over top of their image, on a computer screen.
