Real-time estimation of horizontal gaze angle by saccade integration using in-ear electrooculography

Hl�dek, ?ubo�; Porr, Bernd; Brimijoin, W. Owen

Abstract

The manuscript proposes and evaluates a real-time algorithm for estimating eye gaze angle based solely on single-channel electrooculography (EOG), which can be obtained directly from the ear canal using conductive ear moulds. In contrast to conventional high-pass filtering, we used an algorithm that calculates absolute eye gaze angle via statistical analysis of detected saccades. The estimated eye positions of the new algorithm were still noisy. However, the performance in terms of Pearson product-moment correlation coefficients was significantly better than the conventional approach in some instances. The results suggest that in-ear EOG signals captured with conductive ear moulds could serve as a basis for lightweight and portable horizontal eye gaze angle estimation suitable for a broad range of applications. For instance, for hearing aids to steer the directivity of microphones in the direction of the user’s eye gaze.

Citation

Hládek, Ľ., Porr, B., & Brimijoin, W. O. (2018). Real-time estimation of horizontal gaze angle by saccade integration using in-ear electrooculography. PLoS ONE, 13(1), Article e0190420. https://doi.org/10.1371/journal.pone.0190420

• Journal Article Type: Article
• Acceptance Date: Dec 14, 2017
• Publication Date: Jan 5, 2018
• Deposit Date: Jan 12, 2018
• Publicly Available Date: Jan 12, 2018
• Journal: PLoS ONE
• Electronic ISSN: 1932-6203
• Publisher: Public Library of Science
• Peer Reviewed: Peer Reviewed
• Volume: 13
• Issue: 1
• Article Number: e0190420
• DOI: https://doi.org/10.1371/journal.pone.0190420
• Public URL: https://nottingham-repository.worktribe.com/output/903353
• Publisher URL: http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0190420
• Contract Date: Jan 12, 2018