Rudge, along with a group of other students, set to work on seeing if automatic detection would be possible, using complex mathematic formulas.

CNN: Device to save hospitals billions

By improving the sensors that capture imagery and filtering results, a human user who is wearing an EEG cap can then rapidly view the filtered image set and let the brain's natural threat-detection ability work.

ENGADGET: DARPA threat detection technology uses a camera to see targets, software and soldier brains to identify them