US 9,811,158 B2
System and method for calibrating eye gaze data
Craig A. Hennessey, Vancouver (CA); Jacob Fiset, Montreal (CA); and Nicholas Sullivan, Montreal (CA)
Assigned to Mirametrix Inc., Montreal (CA)
Filed by Mirametrix Inc., Westmount (CA)
Filed on Apr. 28, 2014, as Appl. No. 14/263,636.
Application 14/263,636 is a continuation of application No. PCT/CA2012/050761, filed on Oct. 25, 2012.
Claims priority of provisional application 61/552,292, filed on Oct. 27, 2011.
Prior Publication US 2014/0320397 A1, Oct. 30, 2014
Int. Cl. G09G 5/00 (2006.01); G06F 3/01 (2006.01); A61B 3/113 (2006.01); G01S 3/78 (2006.01); G06K 9/00 (2006.01)
CPC G06F 3/013 (2013.01) [A61B 3/113 (2013.01); G01S 3/7803 (2013.01); G06K 9/00604 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method of calibrating an eye gaze tracking system, the method comprising:
applying an existing pre-calibration to obtain gaze data over a period of time during which content is being displayed;
during the period of time, obtaining at least two key points corresponding to a portion of the content being displayed during the period of time, wherein the at least two key points change in and with the content during the period of time, wherein the changes to the at least two key points in and with the content comprise any one or more of appearing, disappearing, and transforming within the content during the period of time the content is being displayed, independent of user input;
mapping the gaze data to the at least two key points that change within the content during the period of time the content is being displayed, wherein the mapping comprises correlating the gaze data to a spatial and temporal relationship between the at least two key points, and to the existing pre-calibration; and
generating one or more calibration parameters using the mapping of the gaze data to the at least two key points that change within the content during the period of time the content is being displayed.