Optimal Spatial Sensor Design for Magnetic Tracking in a Myokinetic Control Interface

Gherardini, Marta; Mannini, Andrea; Cipriani, Christian

doi:10.1016/j.cmpb.2021.106407

Cited by 11 publications

(5 citation statements)

References 28 publications

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“…Tracking magnetically labeled devices has been proposed for other medical purposes not related to eyetracking, possibly with relaxed requirements in terms of sampling rate, fast data elaboration and spatial resolution [18][19][20][21][22]. Wireless eye tracking based on magnetometric measurements for fast gesture estimation (not requiring high spatial or angular resolution) has been proposed as well [23].…”

Section: Introductionmentioning

confidence: 99%

A Wearable Wireless Magnetic Eye-Tracker, in-vitro and in-vivo tests

Bevilacqua¹,

Biancalana²,

Carucci³

et al. 2023

Preprint

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<p>A wireless, wearable magnetic eye tracker is described and characterized. The proposed instrumentation enables simultaneous evaluation of eye and head angular displacements. Such a system can be used to determine the absolute gaze direction as well as to analyze spontaneous eye re-orientation in response to stimuli consisting in head rotations. The latter feature has implications to analyze the vestibulo-ocular reflex and constitutes an interesting opportunity to develop medical (oto-neurological) diagnostics. Details of data analysis are reported together with some results obtained <em>in-vivo</em> or with simple mechanical simulators that enable measurements under controlled conditions. </p>

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Section: Introductionmentioning

confidence: 99%

A Wearable Wireless Magnetic Eye-Tracker, in-vitro and in-vivo tests

Bevilacqua¹,

Biancalana²,

Carucci³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Apart from some works aimed to localize multiple [16][17][18] or distributed [19,20] magnetic sources, most of the non-inductive magnetic trackers reported in the literature use some numerical algorithms to infer the magnetic target pose (position and orientation) modeling the magnet in terms of a dipolar field source. Our device does not make an exception to this common rule, but, differing from other setups, it tracks both the target pose and the ambient field.…”

Section: Introductionmentioning

confidence: 99%

A Non-Inductive Magnetic Eye-Tracker: From Dipole Tracking to Gaze Retrieval

Biancalana

Chessa

2023

Instruments

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We analyze the information that can be retrieved from the tracking parameters produced by an innovative wearable eye tracker. The latter is based on a permanent-magnet marked corneal lens and by an array of magnetoresistive detectors that measure the magnetostatic field in several positions in the eye proximity. We demonstrate that, despite missing information due to the axial symmetry of the measured field, physiological constraints or measurement conditions make possible to infer complete eye-pose data. Angular precision and accuracy achieved with the current prototypical device are also assessed and briefly discussed. The results show that the instrumentation considered is suitable as a new, moderately invasive medical diagnostics for the characterization of ocular movements and associated disorders.

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“…Apart from some works aimed to localize multiple [13][14][15] or distributed [16,17] magnetic sources, most of the magnetic trackers reported in the literature use some numerical algorithms to infer the magnetic target pose (position and orientation) modeling the magnet in terms of a dipolar field source.…”

Section: Introductionmentioning

confidence: 99%

“…Apart from some works aimed to localize multiple [13][14][15] or distributed [16,17] magnetic sources, most of the magnetic trackers reported in the literature use some nu- * valerio.biancalana@unisi.it merical algorithms to infer the magnetic target pose (position and orientation) modeling the magnet in terms of a dipolar field source. Our device does not make an exception to this common rule, but, differing from other setups, it tracks both the target pose and the ambient field, making the latter no longer a disturbance term, but a source of additional information.…”

Section: Introductionmentioning

confidence: 99%

A Non-inductive Magnetic Eye-Tracker: From Dipole Tracking to Gaze Retrieval

Biancalana¹,

Chessa²

2022

Preprint

View full text Add to dashboard Cite

An innovative wearable eye tracker based on a permanent-magnet marked corneal lens is analyzed in terms of the information that can be retrieved from the tracking parameters. We demonstrate that, despite missing information due to the axial symmetry of the measured field, physiological constraints or measurement conditions make possible to infer complete eye-pose data. The results show that the instrumentation considered is suitable as a new low-invasive medical diagnostics for the characterization of ocular movement and associated disorders.

show abstract

Optimal Spatial Sensor Design for Magnetic Tracking in a Myokinetic Control Interface

Cited by 11 publications

References 28 publications

A Wearable Wireless Magnetic Eye-Tracker, in-vitro and in-vivo tests

A Wearable Wireless Magnetic Eye-Tracker, in-vitro and in-vivo tests

A Non-Inductive Magnetic Eye-Tracker: From Dipole Tracking to Gaze Retrieval

A Non-inductive Magnetic Eye-Tracker: From Dipole Tracking to Gaze Retrieval

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