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arXiv · 2604.12949

GlintMarkers: Gaze-Anchored Spatial Perception Using Corneal Reflections

Seungjoo Lee·Vimal Mollyn·Chris Harrison·Justin Chan·Mayank Goel
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Abstract

AI assistants on smart glasses need to know what surrounds the user and what the user is looking at. Obtaining this context typically relies on a world-facing camera, raising privacy concerns for bystanders. We present GlintMarkers, a system for gaze-anchored spatial perception using a single inward-facing eye camera. Our key observation is that the cornea acts as a mirror that encodes both gaze direction and visual information about the environment in a small, low-contrast reflection. To extract spatial and semantic information from this reflection despite the camera's limited pixel budget, we design passive retroreflective markers that concentrate reflected near-infrared light onto the cornea, producing bright glint patterns. We develop a custom Perspective-n-Point (PnP) estimation framework adapted to corneal imaging and perform orientation and distance estimation of marked objects, as well as unique object identification.

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Seungjoo Lee, Vimal Mollyn, Chris Harrison, Justin Chan, Mayank Goel. 2026-09-14. GlintMarkers: Gaze-Anchored Spatial Perception Using Corneal Reflections. https://arxiv.org/abs/2604.12949

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