![]() ![]() A well established method used in the computer vision community, optical flow is the apparent motion in an image sequence due to brightness changes. This work uses optical flow to solve the displacement fields which generate the Schlieren images. Schairer, Edward T.īackground oriented Schlieren images have historically been generated by calculating the observed pixel displacement between a wind-on and wind-o image pair using normalized cross-correlation. ![]() Optical Flow for Flight and Wind Tunnel Background Oriented Schlieren Imaging ![]()
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