Special Section on Active Electro-Optical Sensing: Phenomenology, Technology, and Applications

Continuously scanning time-correlated single-photon-counting single-pixel 3-D lidar

[+] Author Affiliations
Markus Henriksson, Håkan Larsson

Swedish Defence Research Agency (FOI), Department of Electro-Optical Systems, P.O. Box 1165, 58111 Linköping, Sweden

Christina Grönwall, Gustav Tolt

Swedish Defence Research Agency (FOI), Department of Informatics, P.O. Box 1165, 58111 Linköping, Sweden

Opt. Eng. 56(3), 031204 (Sep 27, 2016). doi:10.1117/1.OE.56.3.031204
History: Received June 29, 2016; Accepted August 23, 2016
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Abstract.  Time-correlated single-photon-counting (TCSPC) lidar provides very high resolution range measurements. This makes the technology interesting for three-dimensional imaging of complex scenes with targets behind foliage or other obscurations. TCSPC is a statistical method that demands integration of multiple measurements toward the same area to resolve objects at different distances within the instantaneous field-of-view. Point-by-point scanning will demand significant overhead for the movement, increasing the measurement time. Here, the effect of continuously scanning the scene row-by-row is investigated and signal processing methods to transform this into low-noise point clouds are described. The methods are illustrated using measurements of a characterization target and an oak and hazel copse. Steps between different surfaces of less than 5 cm in range are resolved as two surfaces.

© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Markus Henriksson ; Håkan Larsson ; Christina Grönwall and Gustav Tolt
"Continuously scanning time-correlated single-photon-counting single-pixel 3-D lidar", Opt. Eng. 56(3), 031204 (Sep 27, 2016). ; http://dx.doi.org/10.1117/1.OE.56.3.031204


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