Remote optical detection of ground vibrations

Robert M. Shroll; Benjamin St. Peter; Steven Richtsmeier; Bridget Tannian; Elijah Jensen; John Kielkopf; Wellesley E. Pereira

doi:10.1117/12.2190988

1 September 2015 Remote optical detection of ground vibrations

Robert M. Shroll, Benjamin St. Peter, Steven Richtsmeier, Bridget Tannian, Elijah Jensen, John Kielkopf, Wellesley E. Pereira

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Proceedings Volume 9608, Infrared Remote Sensing and Instrumentation XXIII; 96080K (2015) https://doi.org/10.1117/12.2190988
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

We present progress being made in the passive optical remote detection of ground surface vibration. With proper design, minute seismic surface waves may be captured using remote visible imagery. The utility of subband steerable filters to the detection of surface vibrations in the absence of inherent image contrast is demonstrated. Detections with the filters are shown with laboratory data and compared to Fourier transform results over a range of surface vibrational amplitudes. We present an analysis of the optical measurements of ground surfaces performed during the passing of nearby trains with discussion of the hardware, software, and detection clutter sources. Results from optical remote sensing are interpreted using additional accelerometer measurements and image processing.

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Robert M. Shroll, Benjamin St. Peter, Steven Richtsmeier, Bridget Tannian, Elijah Jensen, John Kielkopf, and Wellesley E. Pereira "Remote optical detection of ground vibrations", Proc. SPIE 9608, Infrared Remote Sensing and Instrumentation XXIII, 96080K (1 September 2015); https://doi.org/10.1117/12.2190988

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KEYWORDS

Cameras

Fourier transforms

Signal detection

Image filtering

Video

Sensors

Remote sensing

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