An Automatic Calibration Method for Kappa Angle Based on a Binocular Gaze Constraint

Kappa-angle calibration shows its importance in gaze tracking due to the special structure of the eyeball. In a 3D gaze-tracking system, after the optical axis of the eyeball is reconstructed, the kappa angle is needed to convert the optical axis of the eyeball to the real gaze direction. At present...

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Bibliographic Details
Main Authors: Jiahui Liu, Jiannan Chi, Hang Sun
Format: Article
Language:English
Published: MDPI AG 2023-04-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/23/8/3929