A Vision Enhancement System to Improve Face Recognition with Central Vision Loss

Optometry and Vision Science : Official Publication of the American Academy of Optometry
Aurélie CalabrèseEric Castet

Abstract

The overall goal of this work is to validate a low vision aid system that uses gaze as a pointing tool and provides smart magnification. We conclude that smart visual enhancement techniques as well as gaze contingency should improve the efficiency of assistive technology for the visually impaired. A low vision aid, using gaze-contingent visual enhancement and primarily intended to help reading with central vision loss, was recently designed and tested with simulated scotoma. Here, we present a validation of this system for face recognition in age-related macular degeneration patients. Twelve individuals with binocular central vision loss were recruited and tested on a face identification-matching task. Gaze position was measured in real time, thanks to an eye tracker. In the visual enhancement condition, at any time during the screen exploration, the fixated face was segregated from background and considered as a region of interest that could be magnified into a region of augmented vision by the participant, if desired. In the natural exploration condition, participants also performed the matching task but without the visual aid. Response time and accuracy were analyzed with mixed-effects models to (1) compare the performance w...Continue Reading

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Citations

Sep 1, 2018·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Bradley Dougherty
Aug 29, 2020·Translational Vision Science & Technology·Francisco M Costela, Russell L Woods
Mar 29, 2021·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Francisco M CostelaRussell L Woods
Aug 21, 2021·Disability and Rehabilitation. Assistive Technology·Anne MacnamaraTobias Loetscher

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