Pupil positioning method and apparatus, VR/AR apparatus and computer readable medium
US11315281B2 · kind B2 · utility
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1References
17Claims
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Key dates
| Filing date | Nov 19, 2019 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Dec 14, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30201
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure relates to a pupil positioning method. The pupil positioning method may include: obtaining an eye image under illumination of a light source; determining a first internal point in a pupil of the eye image; calculating gradient changes of pixel points along a straight line starting from the first internal point toward outside of the pupil; determining a plurality of edge points at an edge of the pupil based on the gradient changes of the pixel points along the straight line; and performing ellipse fitting on the edge points to obtain a pupil center.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.