(19)

(11)

EP 3 807 816 A1

(12)

(43) Date of publication: 21.04.2021 Bulletin 2021/16 (21) Application number: 19820333.3 (22) Date of filing: 11.03.2019

(51) International Patent Classification (IPC):  G06K 9/62(2006.01) G06F 17/16(2006.01) G06F 17/12(2006.01) (86) International application number: PCT/US2019/021620 (87) International publication number: WO 2019/240856 (19.12.2019 Gazette 2019/51)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 13.06.2018 US 201862684364 P 13.07.2018 US 201816034780 11.09.2018 US 201816127927 (71) Applicant: HRL Laboratories, LLC Malibu, CA 90265 (US)	(72) Inventor: OWECHKO, Yuri Newbury Park, CA 91320 (US) (74) Representative: Boult Wade Tennant LLP  Salisbury Square House 8 Salisbury Square London EC4Y 8AP London EC4Y 8AP (GB)