The crafty engineers at Google aren't the only ones working on augmented reality glasses. Researchers at the Instituto de Oftalmología Aplicada have created a prototype system, based around a head-mounted display and a pair of small cameras. Instead of overlaying info about landmarks or capturing video of your trampoline-based escapades, this prototype is simply meant to help the visually impaired detect and avoid obstacles. A small computer performs real-time analysis of t
