Time-of-flight range imaging for underwater applications

Hannes Merbold; Gion-Pol Catregn; Tobias Leutenegger

doi:10.1117/12.2283476

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22 February 2018 Time-of-flight range imaging for underwater applications

Hannes Merbold, Gion-Pol Catregn, Tobias Leutenegger

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Proceedings Volume 10539, Photonic Instrumentation Engineering V; 1053903 (2018) https://doi.org/10.1117/12.2283476
Event: SPIE OPTO, 2018, San Francisco, California, United States

Abstract

Precise and low-cost range imaging in underwater settings with object distances on the meter level is demonstrated. This is addressed through silicon-based time-of-flight (TOF) cameras operated with light emitting diodes (LEDs) at visible, rather than near-IR wavelengths. We find that the attainable performance depends on a variety of parameters, such as the wavelength dependent absorption of water, the emitted optical power and response times of the LEDs, or the spectral sensitivity of the TOF chip. An in-depth analysis of the interplay between the different parameters is given and the performance of underwater TOF imaging using different visible illumination wavelengths is analyzed.

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Hannes Merbold, Gion-Pol Catregn, and Tobias Leutenegger "Time-of-flight range imaging for underwater applications", Proc. SPIE 10539, Photonic Instrumentation Engineering V, 1053903 (22 February 2018); https://doi.org/10.1117/12.2283476

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