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Hans Gellersen

BimodalGaze: Seamlessly Refined Pointing with Gaze and Filtered Gestural Head Movement

Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review


  • Ludwig Sidenmark
  • ,
  • Diako Mardanbegi
  • ,
  • Argenis Ramirez Gomez
  • ,
  • Christopher Clarke
  • ,
  • Hans Gellersen
Eye gaze is a fast and ergonomic modality for pointing but limited in precision and accuracy. In this work, we introduce BimodalGaze, a novel technique for seamless head-based refinement of a gaze cursor. The technique leverages eye-head coordination insights to separate natural from gestural head movement. This allows users to quickly shift their gaze to targets over larger fields of view with naturally combined eye-head movement, and to refine the cursor position with gestural head movement. In contrast to an existing baseline, head refinement is invoked automatically, and only if a target is not already acquired by the initial gaze shift. Study results show that users reliably achieve fine-grained target selection, but we observed a higher rate of initial selection errors affecting overall performance. An in-depth analysis of user performance provides insight into the classification of natural versus gestural head movement, for improvement of BimodalGaze and other potential applications.
Original languageEnglish
Title of host publicationProceedings ETRA 2020 Full Papers - ACM Symposium on Eye Tracking Research and Applications
EditorsStephen N. Spencer
Publication year2 Jun 2020
ISBN (Electronic)9781450371339
Publication statusPublished - 2 Jun 2020
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2020 ACM.

Copyright 2020 Elsevier B.V., All rights reserved.

    Research areas

  • Eye tracking, Gaze interaction, Refinement, Eye-head coordination, Virtual reality

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