(19)

(11)

EP 3 746 938 A2

(12)

(88) Date of publication A3: 10.10.2019 (43) Date of publication: 09.12.2020 Bulletin 2020/50 (21) Application number: 19748018.9 (22) Date of filing: 14.01.2019

(51) International Patent Classification (IPC):  G06K 9/00(2006.01) (86) International application number: PCT/US2019/013513 (87) International publication number: WO 2019/152177 (08.08.2019 Gazette 2019/32)

(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: 30.01.2018 US 201815883822 14.03.2018 US 201862642959 P 06.04.2018 US 201815947032 (71) Applicant: HRL Laboratories, LLC Malibu, CA 90265 (US)	(72) Inventors: KHOSLA, Deepak Camarillo, CA 93012 (US) UHLENBROCK, Ryan, M. Calabasas, CA 91302 (US) CHEN, Yang Westlake Village, CA 91361 (US) SU, Huapeng Malibu, CA 90265 (US) (74) Representative: Boult Wade Tennant LLP  Salisbury Square House 8 Salisbury Square London EC4Y 8AP London EC4Y 8AP (GB)