Measuring gaze angle changes to maintain fixation upon a small target during motion: 3D motion tracking versus wearable eye-tracker

被引：2

作者：

Baranano, Alejandro Rubio ^{[1
]}

Barrett, Brendan T. ^{[1
]}

Buckley, John G. ^{[2
,3
]}

机构：

[1] Univ Bradford, Sch Optometry & Vis Sci, Bradford, England

[2] Univ Bradford, Sch Engn, Bradford, England

[3] Univ Bradford, Sch Engn, Bradford BD7 1DP, W Yorkshire, England

来源：

MEASUREMENT | 2024年 / 225卷

关键词：

Gaze assessment; Assumed-gaze; 3D head motion; Agreement; Spatial congruence; Eye-tracker; TECHNOLOGY;

D O I：

10.1016/j.measurement.2023.113971

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Recently we demonstrated how changes in gaze angle can be determined without an eye-tracker. The approach uses 3D motion-capture, to track the viewed target in the head's reference frame and assumes head or target movement causes a gaze-angle change. This study determined the validity of this "assumed-gaze" method. Participants read information presented on a smartphone whilst walking. Changes in gaze angles were simultaneously assessed with an eye-tracker and our assumed-gaze method. The spatial and temporal agreement of the assumed-gaze approach with the eye-tracker were -1 deg and -0.02 s, respectively, and spatial congruence indicated the direction of changes in the assumed-gaze angle were in accordance with those determined with the eye tracker for -81 % of the time. Findings indicate that when the head is moving and gaze is continually directed to a small target, our assumed-gaze approach can determine changes in gaze angle with comparable precision to a wearable eye-tracker.

引用

页数：8