in computer optical mice, as the main sensing component for measuring the motion of the mouse across a surface. Optical flow sensors are also being used in robotics applications, primarily where there is a need to measure visual motion or relative motion between the robot and other objects in the vicinity of the robot. The use of optical flow sensors in unmanned aerial vehicles (UAVs), for stability and obstacle avoidance, is also an area of current research. See also Ambient optic array Optical mouse Range imaging Vision processing unit Continuity Equation References External links Finding Optic Flow Art of Optical Flow article on fxguide.com (using optical flow in visual effects) Optical flow evaluation and ground truth sequences. Middlebury Optical flow evaluation and ground truth sequences. mrf-registration.net - Optical flow estimation through MRF The French Aerospace Lab: GPU implementation of a Lucas-Kanade based optical flow CUDA Implementation by CUVI (CUDA Vision & Imaging Library) Horn and Schunck Optical Flow: Online demo and source code of the Horn and Schunck method TV-L1 Optical Flow: Online demo and source code of the Zach et al. method Robust Optical Flow: Online demo and source code of the Brox et al. method Motion in computer vision