Regional eye movement tracking user parameter calibration method

By refining eye movement parameters through a regional eye parameter calibration method, the problem of low eye tracking accuracy is solved, improving the accuracy of eye tracking and user experience, and is applicable to VR/AR head-mounted displays.

CN121817787AActive Publication Date: 2026-04-10NANCHANG VIRTUAL REALITY RES INST CO LTD
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Patent Information

Application Number
CN202610295389.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-11
Publication Date
2026-04-10
Estimated Expiration
2046-03-11

AI Technical Summary

Technical Problem

In existing technologies, due to the significant differences in eye parameters among individuals, the accuracy of eye tracking is low when using a fixed number of calibration points for eye tracking, resulting in a poor customer experience.

Method used

A regional eye parameter calibration method is adopted. By collecting calibration eye maps of human eyes fixating on each calibration point, the pupil characteristics and light spot characteristics of each calibration point are determined, and the corneal curvature radius, optical axis direction and visual axis direction are calculated to refine eye movement parameters and improve the accuracy of gaze estimation.

Benefits of technology

It improves the accuracy and precision of eye tracking, enhances the user experience, and is suitable for more application scenarios, especially in VR/AR headsets.

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Abstract

The embodiment of the invention provides a regional eye movement tracking user parameter calibration method. The method comprises the following steps: collecting a calibration eye pattern of each calibration point watched by a human eye; determining a calibrated pupil feature and a calibrated light spot feature of each calibration point; calculating a calibrated cornea curvature radius and a calibrated cornea curvature center of each calibration point according to the calibrated pupil feature and the calibrated light spot feature of each calibration point; determining the calibration optical axis direction of each calibration point and the distance from the calibration pupil center to the calibration cornea curvature center according to the calibration cornea curvature center and the calibration pupil center of each calibration point; calculating an included angle between the calibration optical axis direction and the calibration visual axis direction of each calibration point; and collecting an actual eye pattern, and calculating the actual optical axis direction of the actual eye pattern according to the included angle and the actual optical axis direction of the actual eye pattern. By performing regional calibration on each calibration point, the eye movement tracking accuracy and precision are improved.
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