Direct gaze estimation based on nonlinearity of EOG

Hiroyuki Manabe, Masaaki Fukumoto, Tohru Yagi

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Electrooculography (EOG) is one of the measures used to estimate the direction of a person's gaze; however, conventional EOG techniques suffer from a drift issue which makes it difficult to extract an accurate absolute eye angle. The technique proposed here is based on the nonlinearity of the EOG and offers a practical solution to this problem. It estimates the absolute eye angles before and after a saccade, which cancels the offset due to the drift. Additionally, it does not require any effort from the user or any target, but instead uses only the difference of the EOGs. Experiments with five subjects confirm that the proposed technique can estimate the absolute eye angle with an error of less than 4°. They also show improvements are achieved with several options such as weighting and multiple saccades. The technique will contribute to practical EOG-based interaction systems.

Original languageEnglish
Article number7017542
Pages (from-to)1553-1562
Number of pages10
JournalIEEE Transactions on Biomedical Engineering
Volume62
Issue number6
DOIs
Publication statusPublished - 2015 Jun 1
Externally publishedYes

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Keywords

  • Electrooculography (EOG)
  • Gaze estimation
  • Nonlinearity
  • Saccade

ASJC Scopus subject areas

  • Biomedical Engineering

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