A Fitts' law study of click and dwell interaction by gaze, head and mouse with a head-mounted display

John Paulin Hansen, Vijay Rajanna, I. Scott MacKenzie, Per Bækgaard

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Abstract

Gaze and head tracking, or pointing, in head-mounted displays enables new input modalities for point-select tasks. We conducted a Fitts' law experiment with 41 subjects comparing head pointing and gaze pointing using a 300 ms dwell (<i>n</i> = 22) or click (<i>n</i> = 19) activation, with mouse input providing a baseline for both conditions. Gaze and head pointing were equally fast but slower than the mouse; dwell activation was faster than click activation. Throughput was highest for the mouse (2.75 bits/s), followed by head pointing (2.04 bits/s) and gaze pointing (1.85 bits/s). With dwell activation, however, throughput for gaze and head pointing were almost identical, as was the effective target width (≈ 55 pixels; about 2°) for all three input methods. Subjective feedback rated the physical workload less for gaze pointing than head pointing.
Original languageEnglish
Title of host publicationProceedings of the Workshop on Communication by Gaze Interaction
PublisherAssociation for Computing Machinery
Publication date2018
Pages1-5
Article numberArticle No. 7
ISBN (Print)978-1-4503-5790-6
DOIs
Publication statusPublished - 2018
EventWorkshop on Communication by Gaze Interaction - Warsaw, Poland
Duration: 15 Jun 201815 Jun 2018

Workshop

WorkshopWorkshop on Communication by Gaze Interaction
CountryPoland
CityWarsaw
Period15/06/201815/06/2018
OtherPart of COGAIN '18

Keywords

  • Fitts' law
  • ISO 9241-9
  • Dwell activation
  • Gaze interaction
  • Head interaction
  • Head mounted displays

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