An Assessment of the Eye Tracking Signal Quality Captured in the HoloLens 2

TL;DR

This paper evaluates the eye tracking signal quality of the HoloLens 2, revealing calibration issues and demonstrating that recalibration significantly improves spatial accuracy and overall signal quality.

Contribution

It provides a comprehensive analysis of HoloLens 2's eye tracking signal quality and shows that recalibration enhances measurement accuracy.

Findings

Uncalibrated data shows reduced spatial accuracy.

Recalibration improves signal quality significantly.

Dataset collected from 30 healthy adults.

Abstract

We present an analysis of the eye tracking signal quality of the HoloLens 2s integrated eye tracker. Signal quality was measured from eye movement data captured during a random saccades task from a new eye movement dataset collected on 30 healthy adults. We characterize the eye tracking signal quality of the device in terms of spatial accuracy, spatial precision, temporal precision, linearity, and crosstalk. Most notably, our evaluation of spatial accuracy reveals that the eye movement data in our dataset appears to be uncalibrated. Recalibrating the data using a subset of our dataset task produces notably better eye tracking signal quality.