@inproceedings{c1a8349a606f4afeb6ae09ad340ab207,
title = "Radi-Eye: Hands-Free Radial Interfaces for 3D Interaction using Gaze-Activated Head-Crossing",
abstract = "Eye gaze and head movement are attractive for hands-free 3D interaction in head-mounted displays, but existing interfaces aford only limited control. Radi-Eye is a novel pop-up radial interface designed to maximise expressiveness with input from only the eyes and head. Radi-Eye provides widgets for discrete and continuous input and scales to support larger feature sets. Widgets can be selected with Look and Cross, using gaze for pre-selection followed by head-crossing as trigger and for manipulation. The technique leverages natural eye-head coordination where eye and head move at an ofset unless explicitly brought into alignment, enabling interaction without risk of unintended input. We explore Radi-Eye in three augmented and virtual reality applications, and evaluate the efect of radial interface scale and orientation on performance with Look and Cross. The results show that Radi-Eye provides users with fast and accurate input while opening up a new design space for hands-free fuid interaction.",
keywords = "Augmented reality, Eye tracking, Eye-head coordination, Gaze interaction, Radial interface, Virtual reality",
author = "Ludwig Sidenmark and Dominic Potts and Bill Bapisch and Hans Gellersen",
year = "2021",
month = may,
day = "6",
doi = "10.1145/3411764.3445697",
language = "English",
series = "Conference on Human Factors in Computing Systems - Proceedings",
publisher = "Association for Computing Machinery",
booktitle = "CHI 2021 - Proceedings of the 2021 CHI Conference on Human Factors in Computing Systems",
address = "United States",
note = "2021 CHI Conference on Human Factors in Computing Systems: Making Waves, Combining Strengths, CHI 2021 ; Conference date: 08-05-2021 Through 13-05-2021",
}