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Laser Doppler Vibrometers (LDVs) have been widely applied for detecting vibrations in applications such as mechanics, bridge inspection, biometrics, as well as long-range surveillance in which acoustic signatures can be obtained at a large distance. However, in both industrial and scientific applications, the LDVs are manually controlled in surface selection, laser focusing, and acoustic acquisition...
For automating the remote voice detection using a laser Doppler vibrometer (LDV), we integrate a pan–tilt–zoom (PTZ) camera, a mirror, and a pan–tilt unit (PTU) with the LDV to form a multimodal sensing system. With the assistance of vision and active control components, the LDV can automatically select the best reflective surfaces, point the laser beam to the selected surfaces, and quickly focus...
To improve the performance and the efficiency of Laser Doppler Vibrometers (LDVs) for long-range hearing, we design an active multimodal sensing platform that integrates a Pan-Tilt-Zoom (PTZ) camera, a mirror and a Pan-Tilt-Unit (PTU) to the LDV. With the assistance of the vision and active control components, the LDV can automatically select the best reflective surfaces, point the laser beam to the...
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