Tracking of retro-reflective targets with fingerprints by structured illumination

Dataset

Description

An array of 16x16 blue-emitting GaN micro-LEDs was used to project binary illumination patterns onto a scene. The projected LEDs define a 16x16 spatial grid in the projection plane. Two retro-reflectors were placed in the scene, one at grid position (4,6), and the other at (14,7). A photodiode was placed next to the LED array to monitor the light reflected back from the scene. The attached hdf5 file contains three datasets, named "seconds", "volts_1", and "volts_2". These are oscilloscope traces taken from the output of the photodiode, where "seconds" contains the time axis for both traces in seconds, "volts_1" contains the photodiode signal when light was reflected from the first retro-reflector, and "volts_2" contains the photodiode signal when light was reflected from the second retro-reflector. The binary pattern sequence that was projected leads to a unique time-sequence of the optical signal for each detector, depending on their grid position. The positions of the retro-reflectors can thus be tracked remotely.
Date made available15 Apr 2020
PublisherUniversity of Strathclyde

Research Output

Micro-LEDs for technological convergence between displays, optical communications, and sensing and imaging systems

Dawson, M. D., Herrnsdorf, J., Xie, E., Gu, E., McKendry, J., Griffiths, A. D. & Strain, M. J., 10 Apr 2020, (Accepted/In press). 4 p.

Research output: Contribution to conferencePaper

Open Access
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    Cite this

    Herrnsdorf, J. (Creator), Strain, M. (Supervisor), Dawson, M. (Supervisor) (15 Apr 2020). Tracking of retro-reflective targets with fingerprints by structured illumination. University of Strathclyde. pos_trace(.h5). 10.15129/a8d15d82-e8c0-42f1-8333-4d2adae8abd9