International Journal of Application or Innovation in Engineering & Management
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ISSN 2319 – 4847
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Title: |
High Precision Point of Gaze Estimation Using an Add On Fixture to Mobile Devices Based on Corneal and Retinal Retro-Reflections
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Author Name: |
Maxim Khabad, Mordechai Bar-Tal, Ytzhak Ytzhaky , Gabby Sarusi |
Abstract: |
Abstract
This work proposes a robust and convenient method for point of gaze (POG) estimation based on corneal and retinal
retro-reflection detection and calculation of the glint-pupil vector. The system concept is simple and cost effective that
can be attached to mobile devices while using the existing visible camera of the mobile device and additional fixture
that includes an add on a near infrared (NIR) camera and a NIR light source. The overall additional system
requirement is minimal, namely loos alignment tolerance of the fixture attached, and simple design. During NIR
illumination of the eyes, corneal and retinal reflections are detected. An algorithm calculates the eye and the system
distance, it calculates also the angle and the distance between the corneal and retinal retro-reflection thus provides the
direction of the gaze and the POG estimation. Experimental results showed high precision of the estimated point of
gaze that is much better than 1 degree (vertically and horizontally) in this very simple and cost effective add on system.
We found out that such accuracy of POG is achieved even for coarse mechanical mounting alignment between the
existing mobile device camera and the add-on system.
Keywords: point of gaze; pupil detection; eyes movements tracking; digital image processing |
Cite this article: |
Maxim Khabad, Mordechai Bar-Tal, Ytzhak Ytzhaky , Gabby Sarusi , "
High Precision Point of Gaze Estimation Using an Add On Fixture to Mobile Devices Based on Corneal and Retinal Retro-Reflections " , International Journal of Application or Innovation in Engineering & Management (IJAIEM),
Volume 8, Issue 4, April 2019 , pp.
054-064 , ISSN 2319 - 4847.
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