The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 15, 2020
Filed:
Dec. 21, 2018
Applicant:
Tobii Ab, Danderyd, SE;
Inventor:
Erik Lindén, Danderyd, SE;
Assignee:
Tobii AB, Danderyd, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B 3/113 (2006.01); G06N 7/00 (2006.01); A61B 3/14 (2006.01); A61B 3/00 (2006.01); A61B 3/11 (2006.01);
U.S. Cl.
CPC ...
G06N 7/005 (2013.01); A61B 3/0025 (2013.01); A61B 3/112 (2013.01); A61B 3/113 (2013.01); A61B 3/14 (2013.01);
Abstract
A method for forming an offset model is described. The offset model represents an estimated offset between a limbus center of a user eye and a pupil center of the user eye as a function of pupil size. The approach includes sampling a set of limbus center values, sampling a set of pupil center values, and sampling a set of radius values. The offset model is formed by comparing a difference between the set of limbus center values and the set of pupil center values at each of the radius values. A system and a computer-readable storage device configured to perform such a method are also disclosed.