UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Mid-Air Haptic Rendering of 2D Geometric Shapes with a Dynamic Tactile Pointer

Hajas, D; Pittera, D; Nasce, A; Georgiou, O; Obrist, M; (2020) Mid-Air Haptic Rendering of 2D Geometric Shapes with a Dynamic Tactile Pointer. IEEE Transactions on Haptics , 13 (1) 10.1109/TOH.2020.2966445. Green open access

[thumbnail of Toh_shapes.pdf]
Preview
Text
Toh_shapes.pdf - Accepted version

Download (6MB) | Preview

Abstract

IEEE An 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&#x0027; accuracy and confidence of identifying shapes in two controlled experiments (<formula><tex>$n_1 = 34; n_2 = 25$</tex></formula>). 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.

Type: Article
Title: Mid-Air Haptic Rendering of 2D Geometric Shapes with a Dynamic Tactile Pointer
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/TOH.2020.2966445
Publisher version: https://doi.org/10.1109/TOH.2020.2966445
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
URI: https://discovery.ucl.ac.uk/id/eprint/10112400
Downloads since deposit
41Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item