In 2013, Researchers Pulled Recognizable Faces of Bystanders Out of the Eye Reflections in a Portrait

An anonymous peer reviewer worked through a manuscript, looked at one of its figures, and recognized one of the authors. The face was a reflection in another person's eye. Across the study's bystanders, those extracted faces ran 27 to 36 pixels wide and covered roughly 322 pixels apiece, and that accidental recognition became the paper's second experiment.

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