89337.pdf (6.49 MB)
Mid-air haptic rendering of 2D geometric shapes with a dynamic tactile pointer
journal contribution
posted on 2023-06-09, 20:14 authored by Daniel Hajas, Dario Pittera, Antony Nasce, Orestis Georgiou, Marianna ObristAn important challenge that affects ultrasonic midair haptics, in contrast to physical touch, is that we lose certain exploratory procedures such as contour following. This makes the task of perceiving geometric properties and shape identification more difficult. Meanwhile, the growing interest in mid-air haptics and their application to various new areas requires an improved understanding of how we perceive specific haptic stimuli, such as icons and control dials in mid-air. We address this challenge by investigating static and dynamic methods of displaying 2D geometric shapes in mid-air. We display a circle, a square, and a triangle, in either a static or dynamic condition, using ultrasonic mid-air haptics. In the static condition, the shapes are presented as a full outline in mid-air, while in the dynamic condition, a tactile pointer is moved around the perimeter of the shapes. We measure participants’ accuracy and confidence of identifying shapes in two controlled experiments (n1 = 34, n2 = 25). Results reveal that in the dynamic condition people recognise shapes significantly more accurately, and with higher confidence. We also find that representing polygons as a set of individually drawn haptic strokes, with a short pause at the corners, drastically enhances shape recognition accuracy. Our research supports the design of mid-air haptic user interfaces in application scenarios such as in-car interactions or assistive technology in education.
Funding
SenseX - Sensory Experiences for Interactive Technologies; G1589; EUROPEAN UNION; H2020-ERC-2014-STG-638605
History
Publication status
- Published
File Version
- Accepted version
Journal
IEEE Transactions on HapticsISSN
1939-1412Publisher
Institute of Electrical and Electronics EngineersExternal DOI
Issue
1Volume
13Department affiliated with
- Informatics Publications
Research groups affiliated with
- Creative Technology Publications
Notes
ACKNOWLEDGEMENTS The authors would like to thank Robert Cobden and Emily Gait for their programming and transcription support. We are also grateful for the discussions on cognitive chunking with Dr Ronald Grau. We thank all reviewers for helping us improving the quality of this manuscript with their extensive constructive criticism. For equipment and funding support, we would like to thank Ultraleap Ltd, and the European Research Council, European Union’s Horizon 2020 programme (grant No 801413).Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2020-01-14First Open Access (FOA) Date
2020-01-14First Compliant Deposit (FCD) Date
2020-01-13Usage metrics
Categories
No categories selectedLicence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC