Reduced spatiotemporal bandwidth of motion stabilized event-based imaging sensors: experimental demonstration

Joseph C. Cox; Joseph C. Cox; Amit Ashok; Nicholas Morley

doi:10.1364/AO.491884

Applied Optics
Vol. 62,
Issue 23,
pp. G128-G142
(2023)
•https://doi.org/10.1364/AO.491884

Reduced spatiotemporal bandwidth of motion stabilized event-based imaging sensors: experimental demonstration

Joseph C. Cox, Amit Ashok, and Nicholas Morley

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Joseph C. Cox, Amit Ashok, and Nicholas Morley, "Reduced spatiotemporal bandwidth of motion stabilized event-based imaging sensors: experimental demonstration," Appl. Opt. 62, G128-G142 (2023)

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Abstract

This work investigates event-based sensor (EBS) imaging system’s read-out bandwidth performance under linear motion, with and without hardware stabilization techniques. We implement three image stabilization methods using hardware rotation to cancel the sensor platform’s linear motion and recapture lost EBS performance. We successfully demonstrated the methods, showing a bandwidth reduction of over an order of magnitude in two scenes, 10 scene variations, and five EBS velocities. This work demonstrates the benefits of stabilization with EBS to reduce bandwidth requirements versus unstabilized EBS systems.

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Data availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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	No Motion	Unstabilized	Stabilized EBS	Stabilized Frame	Stabilized Baseline
Desert	$12, 700 \pm 3.6 %$	$3, 272, 000 \pm 6.5 %$	$207, 200 \pm 59 %$	$123, 000 \pm 17 %$	$75, 700 \pm 16 %$
Urban	$9, 990 \pm 5.5 %$	$1, 750, 000 \pm 19 %$	$133, 000 \pm 36 %$	$63, 800 \pm 15 %$	$50, 100 \pm 13 %$

	On 16.5%	On 21.2%	On 29.3%	On 33.8%
Off Percent	−14.80%	−18.10%	−21.20%	−25.80%
onBN	176.3 nA	305.4 nA	387.5 nA	1.2 µA
offBN	2.2 nA	1.3 nA	189.9 nA	314.6 pA
diffBN	20.7 nA	20.7 nA	7.4 nA	20.7 nA

	No Motion	Unstabilized	Stabilized EBS	Stabilized Frame	Stabilized Baseline
Desert	$12, 700 \pm 3.6 %$	$3, 272, 000 \pm 6.5 %$	$207, 200 \pm 59 %$	$123, 000 \pm 17 %$	$75, 700 \pm 16 %$
Urban	$9, 990 \pm 5.5 %$	$1, 750, 000 \pm 19 %$	$133, 000 \pm 36 %$	$63, 800 \pm 15 %$	$50, 100 \pm 13 %$

	On 16.5%	On 21.2%	On 29.3%	On 33.8%
Off Percent	−14.80%	−18.10%	−21.20%	−25.80%
onBN	176.3 nA	305.4 nA	387.5 nA	1.2 µA
offBN	2.2 nA	1.3 nA	189.9 nA	314.6 pA
diffBN	20.7 nA	20.7 nA	7.4 nA	20.7 nA

Abstract

Data availability

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Tables (3)

Equations (9)

Applied Optics