“It’s no mean feat for a computer to identify an individual’s face in daylight. The process involves precisely measuring a photograph — eye size, distance from nose to mouth, etc. — adjusting the distances for three dimensions, and searching a database for a match. But to do it at night, when all you have is far lower-resolution thermal images, the Army Research Lab used a technique that allows software to mimic the human brain.”
Source: US Army Figures Out How To Do Facial Recognition in the Dark – Defense One
