Motion Amplification is a video-processing technique that detects subtle motion and enhances that motion to a level visible with the naked eye. Motion Amplification Technology can resolve motions as small as 250 nanometers at 1 meter and can be performed live and in real-time on even a modest laptop. The process involves the use of a high definition and high dynamic range video cameras where every pixel becomes an independent point sensor creating millions of continuous data points in an instant. This essentially turns a high definition camera into a full field vibration acquisition device with over 2.3 million independent sampling locations. The technology allows the user to measure calibrated absolute displacement across the full field of view providing a time waveform and spectrum for each measured location. A comprehensive set of examples and applications will be discussed along with a live demonstration.
We report on observations of low level noise and modulation in natural sky light and in sunlit scenes. Data
were taken with various clear sky and partly cloudy conditions of the sky itself, as a function of altitude and
angular resolution, and of naturally illuminated scenes. Different optical and sensor configurations were
employed to explore the contributions of natural signal fluctuation to the remote sensing of vibrations
through modulation of optical and near infrared diffusely scattered light and temporal imaging of partially
resolved high contrast features. Low noise InGaAs high dynamic range photodiodes and cameras, and
silicon image sensors were used with real time and post-processing to identify the noise floor, and to
establish practical limits on light level and viewing distance in the use of these methods for remote
structural health and vibration monitoring.
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