Wednesday, January 07, 2015

This is SO Blade Runner... Extracting facial images from reflections in your cornea in highrez pictures

Identifiable Images of Bystanders Extracted from Corneal Reflections


Criminal investigations often use photographic evidence to identify suspects. Here we combined robust face perception and high-resolution photography to mine face photographs for hidden information. By zooming in on high-resolution face photographs, we were able to recover images of unseen bystanders from reflections in the subjects' eyes. To establish whether these bystanders could be identified from the reflection images, we presented them as stimuli in a face matching task (Experiment 1). Accuracy in the face matching task was well above chance (50%), despite the unpromising source of the stimuli. Participants who were unfamiliar with the bystanders' faces (n = 16) performed at 71% accuracy [t(15) = 7.64, p<.0001, d = 1.91], and participants who were familiar with the faces (n = 16) performed at 84% accuracy [t(15) = 11.15, p<.0001, d = 2.79]. In a test of spontaneous recognition (Experiment 2), observers could reliably name a familiar face from an eye reflection image. For crimes in which the victims are photographed (e.g., hostage taking, child sex abuse), reflections in the eyes of the photographic subject could help to identify perpetrators




Okay so it was staged and setup special...


... but still, that's pretty awesome.

The next time your picture is taken with that super-duper highrez camera, you better be careful where you're looking... :/


(Via: technabob - Extracting Faces from Eye Reflections in Photographs: Zoom in and Enhance)

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