US 11,741,208 B2
Spoof detection using illumination sequence randomization
Spandana Vemulapalli, Kansas City, MO (US); and David Hirvonen, Brooklyn, NY (US)
Assigned to JUMIO CORPORATION, Sunnyvale, CA (US)
Filed by Jumio Corporation, Palo Alto, CA (US)
Filed on Sep. 20, 2021, as Appl. No. 17/479,882.
Application 17/479,882 is a continuation of application No. 17/225,797, filed on Apr. 8, 2021, granted, now 11,126,879.
Prior Publication US 2022/0327321 A1, Oct. 13, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G06K 9/00 (2022.01); G06N 3/08 (2023.01); G06K 9/46 (2006.01); G06K 9/62 (2022.01); G06F 17/11 (2006.01); G06F 21/32 (2013.01); G06V 40/40 (2022.01); G06V 40/16 (2022.01); G06F 18/214 (2023.01); G06V 10/143 (2022.01)
CPC G06F 21/32 (2013.01) [G06F 17/11 (2013.01); G06F 18/214 (2023.01); G06N 3/08 (2013.01); G06V 10/143 (2022.01); G06V 40/166 (2022.01); G06V 40/167 (2022.01); G06V 40/173 (2022.01); G06V 40/45 (2022.01)] 20 Claims
OG exemplary drawing
 
1. A computer-implemented method comprising:
obtaining a set of multiple color-coded sequences;
randomly selecting a color-coded sequence from the set of multiple color-coded sequences, the color-coded sequence associated with a matched filter in a matched filtering process;
illuminating a subject in accordance with a sequence of colors in the color-coded sequence;
capturing a sequence of images of the subject, wherein the sequence of images is temporally synchronized with illumination by the color-coded sequence;
generating, by the matched filtering process using the matched filter associated with the color-coded sequence, a filtered response image from the sequence of images of the subject; and
determining, based on the filtered response image, that the subject is a live person.