Computational alleviation of homonymous visual field defect with OST-HMD: The effect of size and position of overlaid overview window

Xi Zhao, Kentaro Go, Kenji Kashiwagi, Masahiro Toyoura, Xiaoyang Mao, Issei Fujishiro

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Visual field defect (VFD) refers to a symptom in which a patient loses part of his/her field of view (FoV). Medical therapy can halt the progression of VFD, but complete recovery is impossible. In this paper, we propose a computational method for alleviating the restricted FoV with an optical see-through head-mounted display (OST-HMD), where an overview scene captured by the installed camera is overlaid on the persisting FoV. Since the overview window occludes with the real world scene, there is a trade-off between the augmented contextual information and the local unscreened information. We hypothesized that such a trade-off can be resolved by taking into consideration the size of the overview window and its displacement from the center of the unimpaired FoV. We therefore conducted an empirical evaluation through a Whac-A-Mole type of task with ten VFD-imitative subjects, where three sizes of an overview window with a fixed aspect ratio and seven positions in terms of elevation and azimuth were used combinatorially on an OST-HMD to find the best size and position of the overview window. It was statistically proven that for left-sided homonymous VFD-imitative subjects, the performance of the task was better when the medium-sized overview window was placed in the lower right position. The obtained result can legitimate default settings for the proposed VFD alleviation method.

Original languageEnglish
Title of host publicationProceedings - 2019 International Conference on Cyberworlds, CW 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages175-182
Number of pages8
ISBN (Electronic)9781728122977
DOIs
Publication statusPublished - 2019 Oct
Event18th International Conference on Cyberworlds, CW 2019 - Kyoto, Japan
Duration: 2019 Oct 22019 Oct 4

Publication series

NameProceedings - 2019 International Conference on Cyberworlds, CW 2019

Conference

Conference18th International Conference on Cyberworlds, CW 2019
CountryJapan
CityKyoto
Period19/10/219/10/4

Keywords

  • Augmented reality
  • Computational glasses
  • Computational ophthalmology
  • Homonymous hemianopia
  • Visual field defect

ASJC Scopus subject areas

  • Artificial Intelligence
  • Computational Theory and Mathematics
  • Computer Graphics and Computer-Aided Design
  • Computer Science Applications
  • Computer Vision and Pattern Recognition
  • Hardware and Architecture
  • Media Technology

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  • Cite this

    Zhao, X., Go, K., Kashiwagi, K., Toyoura, M., Mao, X., & Fujishiro, I. (2019). Computational alleviation of homonymous visual field defect with OST-HMD: The effect of size and position of overlaid overview window. In Proceedings - 2019 International Conference on Cyberworlds, CW 2019 (pp. 175-182). [8918957] (Proceedings - 2019 International Conference on Cyberworlds, CW 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CW.2019.00036