ViMoMag
Free tool to detect invisible movements with just a camera
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ViMoMag - Free tool to detect invisible movements with just a camera

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Deploying physical sensors are the standard way to measure structural or mechanical vibration but can be expensive/insufficient — you need one sensor per measurement point, installation access, calibration, maintenance, etc. Motion magnification offers an alternative: amplifies sub-pixel motions in a video and turns them into visible movement.

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The commercial versions of this (Iris M, MIDAS) work well but are priced for big businesses and MNCs. Open source tools exist as well but they require a good engineer specialized in computer vision or signal processing. Since the state of art algorithm is patented (Eulerian approach) and expensive to license, I used a Lagrangian approach which is not as robust but for initial diagnostics, academic work, or resource-constrained engineering teams, it produces useful results