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Optical Flow for Unmanned Aerial Vehicle Navigation


Optical flow is used by many small flying insects (such as flies, bees and locusts) for tasks such as landing, speed control and collision avoidance.


We currently use Alan Stocker's custom designed 2-d optical flow chip which computes optical flow in a scene using analog circuitry. We incorporate this chip into a compact, lightweight, low-power, fly-able sensor for a micro-Unmanned Aerial Vehicle and investigate the use of optical flow to aid navigation in GPS denied environments.