Comparison of high speed imaging technique to laser vibrometry for detection of vibration information from objects

Gabriela Paunescu; Peter Lutzmann; Benjamin Göhler; Daniel Wegner

doi:10.1117/12.2194753

16 October 2015 Comparison of high speed imaging technique to laser vibrometry for detection of vibration information from objects

Gabriela Paunescu, Peter Lutzmann, Benjamin Göhler, Daniel Wegner

Author Affiliations +

Proceedings Volume 9649, Electro-Optical Remote Sensing, Photonic Technologies, and Applications IX; 96490D (2015) https://doi.org/10.1117/12.2194753
Event: SPIE Security + Defence, 2015, Toulouse, France

Abstract

The development of camera technology in recent years has made high speed imaging a reliable method in vibration and dynamic measurements. The passive recovery of vibration information from high speed video recordings was reported in several recent papers. A highly developed technique, involving decomposition of the input video into spatial subframes to compute local motion signals, allowed an accurate sound reconstruction. A simpler technique based on image matching for vibration measurement was also reported as efficient in extracting audio information from a silent high speed video. In this paper we investigate and discuss the sensitivity and the limitations of the high speed imaging technique for vibration detection in comparison to the well-established Doppler vibrometry technique. Experiments on the extension of the high speed imaging method to longer range applications are presented.

Citation Download Citation

Gabriela Paunescu, Peter Lutzmann, Benjamin Göhler, and Daniel Wegner "Comparison of high speed imaging technique to laser vibrometry for detection of vibration information from objects", Proc. SPIE 9649, Electro-Optical Remote Sensing, Photonic Technologies, and Applications IX, 96490D (16 October 2015); https://doi.org/10.1117/12.2194753

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