US 9,811,720 B2
Mobile device based gait biometrics
Yu Zhong, Winchester, MA (US)
Assigned to BAE Systems Information and Electronic Systems Integration Inc., Nashua, NH (US)
Filed by BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC., Nashua, NH (US)
Filed on Jul. 29, 2014, as Appl. No. 14/445,149.
Claims priority of provisional application 61/894,107, filed on Oct. 22, 2013.
Prior Publication US 2015/0112603 A1, Apr. 23, 2015
This patent is subject to a terminal disclaimer.
Int. Cl. G01P 15/00 (2006.01); G06K 9/00 (2006.01); G06K 9/46 (2006.01)
CPC G06K 9/00348 (2013.01) [G06K 9/46 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of identifying a person by the person's gait comprising:
providing an accelerometer, an invariant calculation processor, a gait dynamics processor, and a matching processor;
programming the matching processor with a set of predetermined gait dynamics images (GDIs);
positioning the accelerometer on the person;
linking the accelerometer to the invariant calculation processor;
linking the invariant calculation processor to the gait dynamics image processor;
linking the gait dynamics image processor to the matching processor;
moving from one point to another point while carrying the accelerometer;
generating, with the accelerometer, acceleration data corresponding to a gait of the person;
transferring the acceleration data from the accelerometer to the invariant calculation processor;
calculating, with the invariant calculation processor, rotational invariant values based, at least in part, on the acceleration data, wherein the rotational invariant values are independent of a rotational position of the accelerometer on the person;
generating, with the gait dynamics image processor, a gait dynamics image (GDI) of the person based, at least in part, on the calculated rotational invariant values;
comparing, with the matching processor, the person's GDI to the set of predetermined GDIs; and
Identifying the person when the person's GDI matches one of the set of predetermined GDIs.