<div class="csl-bib-body">
<div class="csl-entry">Laimer, M., Kern, T., Brukner, L., Schitter, G., & Csencsics, E. (2025). Enabling precise 2-D in-plane displacement sensing with low latency for motion tracking applications. <i>IEEE Transactions on Instrumentation and Measurement</i>, <i>74</i>, Article 5046009. https://doi.org/10.1109/TIM.2025.3615282</div>
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dc.identifier.issn
0018-9456
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/224305
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dc.description.abstract
This article presents a sensor designed for real-time measurements of 2-D in-plane displacements. Utilizing laser speckle, the sensor comprises a high-speed camera and an field-programmable gate array (FPGA) to process data with low latency. Based on a 2-D cross-correlation algorithm implemented on the FPGA in the frequency domain, the sample in-plane displacement is measured. The camera captures images at rates of up to 8200 frames/s, with the FPGA processing the acquired images with a latency of 121 μ s for a region of interest (ROI) of 8 × 8 pixels. Experimental results demonstrate that the developed in-plane sensor effectively processes data in real-time, making it suitable for feedback control systems operating at frequencies up to several hundred hertz. The results also reveal a fundamental tradeoff between measurement range and frame rate/latency that can be exploited to match different application requirements.
en
dc.language.iso
en
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dc.publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
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dc.relation.ispartof
IEEE Transactions on Instrumentation and Measurement
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dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
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dc.subject
High-speed imaging
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dc.subject
in-plane motion sensing
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dc.subject
real-time image processing
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dc.title
Enabling precise 2-D in-plane displacement sensing with low latency for motion tracking applications