Midair Balloon Interface: A Soft and Lightweight Midair Object for Proximate Interactions
summary
Prototype uses eleven ultrasound transducer array units and high-speed stereo cameras to control a 10-cm helium balloon in 3D with closed-loop, time-sliced driving, letting the balloon follow curves (circle, figure-eight, heart) and be touched at high speed without damage. Amplitude-modulated ultrasound produces 200Hz vibrotactile feedback adjustable over about 10–11 levels. Also demos sight-based face-following with a head-mounted camera and interaction primitives like touch, grasp, click, drag-and-drop.
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chapters (11)
- 0:00Intro
- 1:08Motivation To develop a safe and fast midair tangible user interface (TUI).
- 2:48Previous works: acoustic levitation Levitation primitives
- 3:33Implementation: Hardware
- 3:50Implementation: Control
- 4:41Experiment: Maneuvers
- 5:21Tangible interaction (Input)
- 5:37Vibrotactile feedback
- 6:12User study: strength of haptic feedback
- 6:34Sight-based interaction
- 7:23Potential Application
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