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:
Sep. 01, 2015
Filed:
Apr. 13, 2012
Applicant:
Zhiyong Liu, Beijing, CN;
Inventor:
Zhiyong Liu, Beijing, CN;
Assignee:
ISEN TECH & TRADING CO., LTD, Beijing, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B 3/14 (2006.01); A61B 3/113 (2006.01); A61B 3/00 (2006.01); G06K 9/00 (2006.01); G06K 9/46 (2006.01); G06T 7/00 (2006.01);
U.S. Cl.
CPC ...
A61B 3/113 (2013.01); A61B 3/0025 (2013.01); G06K 9/00604 (2013.01); G06K 9/4642 (2013.01); G06T 7/0012 (2013.01);
Abstract
An apparatus and method for monitoring the movement of eyeball comprises collecting an image frame of pupil; extracting a pupil pixel set (S); extracting a boundary value of the pupil pixel set; setting a center point based on the boundary value and dividing the pupil pixel set into four quadrant sets (S, S, Sand S); calculating the coordinate of cross points of the two straight lines and traversing points in the four quadrants, wherein the cross points form a pupil center coordinate set (S); and calculating an average value of horizontal and vertical directions according to the pupil center coordinate set (S).