Patent · US Active

Determining eye openness with an eye tracking device

US10394019B2 · kind B2 · utility

4Cited by

12References

20Claims

0Family size

Assignee

Tobii AB · SE

Inventors

Mark Ryan · McMinnville, US
Torbjörn Sundberg · Danderyd, SE
Pravin Kumar Rana · Danderyd, SE
Yimu Wang · Danderyd, SE

Key dates

Filing date	Feb 9, 2018
Grant date	Aug 27, 2019
Priority date	—
Expiry date	Feb 9, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG06T2207/30201
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A method for determining eye openness with an eye tracking device is disclosed. The method may include determining, for pixels of an image sensor of an eye tracking device, during a first time period when an eye of a user is open, a first sum of intensity of the pixels. The method may also include determining, during a second time period when the eye of the user is closed, a second sum of intensity of the pixels. The method may further include determining, during a third time period, a third sum of intensity of the pixels. The method may additionally include determining that upon the third sum exceeding a fourth sum of the first sum plus a threshold amount, that the eye of the user is closed, the threshold amount is equal to a product of a threshold fraction and a difference between the first sum and the second sum.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.