Patent SG-11201808494T-A (SG)
Title: Signal light detection
Inventor: ZHOU LUBING
IPC: G06T7/10
Filed: 2017-03-31
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property -, Organization 11111111011110111010101111101011111011101011111011110111101101111101111011111 International Bureau 0.. .1 j ..... ..or::,„, (10) International Publication Number (43) International Publication Date WO 2017/171659 Al 5 October 2017 (05.10.2017) IN I PO I P CT _ (51) (21) (22) (25) Filing Language: (26) Publication Language: (30) (71) Applicant: AGENCY FOR SCIENCE, TECHNOLOGY (72) International Patent Classification: search, 1 Fusionopolis Way, #21-01 Connexis, South GOOK 9/00 (2006.01) GO6T 7/10 (2017.01) Tower, Singapore 138632 (SG). PAN, Yu; c/o PKM, Insti- GO6T 7/90 (2017.01) tute for Infocomm Research, 1 Fusionopolis Way, #21-01 International Application Number: Connexis, South Tower, Singapore 138632 (SG). SONG, Zhiwei; c/o PKM, Institute for Infocomm Research, 1 Fu- PCT/SG2017/050188 sionopolis Way, #21-01 Connexis, South Tower, Singa- International Filing Date: pore 138632 (SG). 31 March 2017 (31.03.2017) (74) Agent: VIERING, JENTSCHURA & PARTNER LLP; English P.O. Box 1088, Rochor Post Office, Rochor Road, Singa- English pore 911833 (SG). (81) Designated States (unless otherwise indicated, for every Priority Data: kind of national protection available): AE, AG, AL, AM, 10201602565Y 31 March 2016 (31.03.2016) SG 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, AND RESEARCH [SG/SG]; 1 Fusionopolis Way, #20-10 DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, Connexis North Tower, Singapore 138632 (SG). HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, Inventors: ZHOU, Lubing; c/o PKM, Institute for In- MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, focomm Research, 1 Fusionopolis Way, #21-01 Connexis, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, South Tower, Singapore 138632 (SG). WANG, Jiangang; RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, c/o PKM, Institute for Infocomm Research, 1 Fusionopolis TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, Way, #21-01 Connexis, South Tower, Singapore 138632 ZA, ZM, ZW. (SG). LEE, Serin; c/o PKM, Institute for Infocomm Re- [Continued on next page] = = (54) Title: SIGNAL LIGHT DETECTION 200 (57) : There is provided a method of signal light de- tection, and a corresponding signal light detection device. The method includes obtaining a dark frame of an environ- ment, the dark frame comprising a plurality of light blobs j -202 captured corresponding to lights captured in the environment, obtaining a bright frame of the environment, the bright frame comprising a plurality of light blobs corresponding to lights captured in the environment, identifying a plurality of can- J - 204 didate light blobs from the plurality of light blobs in the dark frame, identifying a plurality of candidate regions in the bright frame based on the plurality of candidate light blobs identified from the dark frame, classifying each of the plural- j --206 ity of candidate light blobs based on the corresponding can- didate region from the bright frame, and evaluating whether one or more of the plurality of classified candidate light blobs is a signal light from a particular type of signaling device. 208 J -210 J-212 = = = = obtaining a dark frame of an environment, the dark frame comprising a plurality of light blobs corresponding to lights captured in the environment = _ = I - obtaining a bright frame of the environment, the bright frame comprising a plurality of light blobs corresponding to lights captured in the environment = = = _ I = identifying a plurality of candidate light blobs from the plurality of light blobs in the dark frame = — identifying a plurality of candidate regions in the bright frame based on the plurality of candidate light blobs identified from the dark frame = — — = 1 Il .4 01 kr) Il IN Il --.... IN 1-1 0 ei classifying each of the plurality of candidate light blobs based on the corresponding candidate region from the bright frame evaluating whether one or more of the plurality of classified candidate light blobs is a signal light from a particular type of signaling device FIG. 2 O WO 2017/171659 Al MIDEDIMOMOIDEIRMEMOMOMMEMEHOMEHOIMIE (84) Designated States (unless otherwise indicated, for every SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, kind of regional protection available): ARIPO (BW, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, GH, SZ, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, RU, KZ, Published: TJ, TM), European (AL, AT, BE, BG, CH, CY, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, CZ, IT, RS, DE, — LT, SE, with international search report (Art. 21(3))