Patent SG-11201804580U-A (SG)
Title: Liveness detection for antispoof face recognition
Inventor: CHANDRAKER MANMOHAN
IPC: G06N3/08
Filed: 2017-07-05
Abstract: January 2018 (25.01.2018) WIP0 I PCT (51) International Patent Classification: (71) Applicants: NEC LABORATORIES AMERICA, INC. 606K 9/00 (2006.01) 606N 3/08 (2006.01) [US/US]; 4 Independence Way, Suite 200, Princeton, New (21) International Application Number: Jersey 08540 (US). NEC HONG KONG LIMITED ; 25th Floor, The Metropolis Tower, 10 Metropolis Drive, Hung- PCT/US2017/040673 horn, Kowloon, Hong Kong (CN). (22) International Filing Date: 05 July 2017 (05.07.2017) (72) Inventors: CHANDRAKER, Manmohan; 444 Saratoga Avenue, Santa Clara, California 95050 (US). LAU, Er- (25) Filing Language: English ic; NEC Hong Kong Limited, 25th Floor The Metroplis Tower, 10 Metropolis Drive, Hunghom Kowloon, Hong (26) Publication Language: English Kong (CN). WONG, Elsa; NEC Hong Kong Limited, 25th (30) Priority Data: Floor The Metroplis Tower, 10 Metropolis Drive, Hunghom 62/365,510 22 July 2016 (22.07.2016) US Kowloon, Hong Kong (CN). YU, Xiang; 131 Concord Cir- 62/366,285 25 July 2016 (25.07.2016) US cle, Mountain View, California 94040 (US). 15/637,264 29 June 2017 (29.06.2017) US (74) Agent: KOLODKA, Joseph; NEC Laboratories America, 15/637,368 29 June 2017 (29.06.2017) US Inc., 4 Independence Way, Suite 200, Princeton, New Jersey 15/637,465 29 June 2017 (29.06.2017) US 08540 (US). 15/637,569 29 June 2017 (29.06.2017) US 15/637,644 29 June 2017 (29.06.2017) US (54) Title: LIVENESS DETECTION FOR ANTISPOOF FACE RECOGNITION 0 Server (liveness detection for face recognition) 121 123 122 (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) vitivio VIII otiolo itio Hs (19) World Intellectual Property Organization International Bureau (10) International Publication Number WO 2018/017319 Al (43) International Publication Date Camera system 110 170 170 x-160 170 170 • FIG. 1 (57) : A face recognition system and facility access control system are provided. The face recognition system includes a camera (110) configured to capture an input image of a subject purported to be a person. The face recognition system further includes a memory (122) storing a deep learning model configured to perfoiin multi-task learning for a pair of tasks including a liveness detection task and a face recognition task. The face recognition task also includes a processor (121) configured to apply the deep learning model to the input image to recognize an identity of the subject in the input image and a liveness of the subject. The liveness detection task is configured to evaluate a plurality of different distractor modalities corresponding to different physical spoofmg materials to prevent face spoofmg for the face recognition task. [Continued on next page] WO 2018/017319 Al MIDEDIMOMOIDEIREIDIONIMMEHOEICHMEn (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3))