%PDF-1.3 1 0 obj << /Kids [ 3 0 R 4 0 R 5 0 R 6 0 R 7 0 R 8 0 R 9 0 R 10 0 R 11 0 R ] /Type /Pages /Count 9 >> endobj 2 0 obj << /Title (Zigzag Learning for Weakly Supervised Object Detection) /Producer (PyPDF2) /Author (Xiaopeng Zhang\054 Jiashi Feng\054 Hongkai Xiong\054 Qi Tian) /Subject (2018 IEEE Conference on Computer Vision and Pattern Recognition) >> endobj 3 0 obj << /Parent 1 0 R /Rotate 0 /Contents 13 0 R /Resources << /XObject << /x8 14 0 R /R49 17 0 R /R48 18 0 R /x6 22 0 R /R64 25 0 R /R61 29 0 R /R60 30 0 R /R63 28 0 R /R62 31 0 R /x12 48 0 R /x10 51 0 R >> /ExtGState << /s9 54 0 R /s11 57 0 R /a0 << /CA 1 /ca 1 >> /R46 46 0 R /s5 60 0 R /s7 63 0 R /R26 66 0 R >> /Font << /F2 67 0 R /R57 32 0 R /R43 68 0 R /R51 39 0 R /R41 72 0 R /R29 76 0 R /F1 80 0 R /R39 81 0 R /R37 85 0 R /R35 88 0 R /R33 92 0 R /R27 96 0 R /R31 100 0 R >> /ProcSet [ /ImageC /Text /PDF /ImageI /ImageB ] /ColorSpace << /R47 19 0 R /R55 26 0 R /R22 20 0 R >> >> /Group 47 0 R /MediaBox [ 0 0 612 792 ] /Annots [ 103 0 R 104 0 R 105 0 R 106 0 R 107 0 R 108 0 R 109 0 R 110 0 R 111 0 R 112 0 R 113 0 R 114 0 R 115 0 R 116 0 R 117 0 R ] /Type /Page >> endobj 4 0 obj << /Parent 1 0 R /Rotate 0 /Type /Page /Contents 118 0 R /Resources << /ExtGState << /R26 66 0 R >> /Font << /R29 76 0 R /F2 119 0 R /F1 120 0 R /R41 72 0 R /R39 81 0 R /R93 121 0 R /R43 68 0 R /R27 96 0 R >> /ProcSet [ /ImageC /Text /PDF /ImageI /ImageB ] >> /MediaBox [ 0 0 612 792 ] /Annots [ 126 0 R 127 0 R 128 0 R 129 0 R 130 0 R 131 0 R 132 0 R 133 0 R 134 0 R 135 0 R 136 0 R 137 0 R 138 0 R 139 0 R 140 0 R 141 0 R 142 0 R 143 0 R 144 0 R 145 0 R ] >> endobj 5 0 obj << /Parent 1 0 R /Rotate 0 /Contents 146 0 R /Resources << /XObject << /R102 147 0 R /R124 148 0 R /R123 151 0 R /R122 152 0 R /R121 153 0 R /R120 154 0 R /R109 155 0 R /R108 156 0 R /R118 157 0 R /R119 158 0 R /R112 159 0 R /R113 160 0 R /R110 167 0 R /R111 162 0 R /R105 163 0 R /R104 164 0 R /R107 165 0 R /R106 166 0 R /R103 161 0 R >> /ExtGState << /R46 46 0 R /R26 66 0 R /R114 149 0 R /R115 150 0 R >> /Font << /R29 76 0 R /R129 173 0 R /R116 168 0 R /F1 177 0 R /R43 68 0 R /F2 178 0 R /R41 72 0 R /R127 179 0 R /R131 182 0 R /R125 186 0 R /R133 190 0 R /R135 195 0 R /R93 121 0 R /R33 92 0 R /R27 96 0 R >> /ProcSet [ /ImageC /Text /PDF /ImageI /ImageB ] >> /Group 172 0 R /MediaBox [ 0 0 612 792 ] /Annots [ 200 0 R 201 0 R ] /Type /Page >> endobj 6 0 obj << /Parent 1 0 R /Rotate 0 /Type /Page /Contents 202 0 R /Resources << /XObject << /R163 203 0 R /R162 204 0 R /R161 205 0 R /R160 206 0 R /R172 207 0 R /R166 208 0 R /R156 209 0 R /R157 210 0 R /R154 211 0 R /R155 212 0 R /R153 213 0 R /R165 214 0 R /R164 215 0 R /R171 216 0 R /R158 217 0 R /R159 218 0 R >> /ExtGState << /R26 66 0 R >> /Font << /R29 76 0 R /R175 219 0 R /F1 223 0 R /R168 224 0 R /R43 68 0 R /F2 231 0 R /R41 72 0 R /R173 232 0 R /R127 179 0 R /R131 182 0 R /R125 186 0 R /R133 190 0 R /R129 173 0 R /R39 81 0 R /R93 121 0 R /R33 92 0 R /R27 96 0 R >> /ProcSet [ /Text /ImageC /ImageB /PDF /ImageI ] /ColorSpace << /R55 26 0 R /R22 20 0 R >> >> /MediaBox [ 0 0 612 792 ] /Annots [ 235 0 R 236 0 R 237 0 R 238 0 R 239 0 R 240 0 R 241 0 R 242 0 R 243 0 R 244 0 R ] >> endobj 7 0 obj << /Parent 1 0 R /Rotate 0 /Type /Page /Contents 245 0 R /Resources << /ExtGState << /R26 66 0 R >> /Font << /R29 76 0 R /F1 246 0 R /R43 68 0 R /F2 247 0 R /R41 72 0 R /R127 179 0 R /R131 182 0 R /R125 186 0 R /R133 190 0 R /R129 173 0 R /R39 81 0 R /R93 121 0 R /R33 92 0 R /R27 96 0 R >> /ProcSet [ /ImageC /Text /PDF /ImageI /ImageB ] >> /MediaBox [ 0 0 612 792 ] /Annots [ 248 0 R 249 0 R 250 0 R 251 0 R 252 0 R ] >> endobj 8 0 obj << /Parent 1 0 R /Rotate 0 /Contents 253 0 R /Resources << /XObject << /R207 254 0 R >> /ExtGState << /R46 46 0 R /R26 66 0 R /R206 255 0 R /R115 150 0 R >> /Font << /F2 256 0 R /R175 219 0 R /R208 257 0 R /R43 68 0 R /R41 72 0 R /F1 261 0 R /R29 76 0 R /R125 186 0 R /R133 190 0 R /R39 81 0 R /R93 121 0 R /R33 92 0 R /R27 96 0 R >> /ProcSet [ /ImageC /Text /PDF /ImageI /ImageB ] >> /Group 172 0 R /MediaBox [ 0 0 612 792 ] /Annots [ 262 0 R 263 0 R 264 0 R 265 0 R 266 0 R 267 0 R 268 0 R 269 0 R 270 0 R 271 0 R 272 0 R ] /Type /Page >> endobj 9 0 obj << /Parent 1 0 R /Rotate 0 /Type /Page /Contents 273 0 R /Resources << /XObject << /R239 274 0 R /R238 275 0 R /R237 276 0 R /R236 277 0 R /R235 278 0 R /R234 279 0 R /R233 280 0 R /R244 281 0 R /R242 282 0 R /R243 283 0 R /R240 284 0 R /R241 285 0 R >> /ExtGState << /R26 66 0 R >> /Font << /R29 76 0 R /F2 286 0 R /F1 287 0 R /R39 81 0 R /R175 219 0 R /R35 88 0 R /R27 96 0 R /R173 232 0 R >> /ProcSet [ /Text /ImageC /ImageB /PDF /ImageI ] >> /MediaBox [ 0 0 612 792 ] /Annots [ 288 0 R 289 0 R 290 0 R 291 0 R 292 0 R 293 0 R 294 0 R 295 0 R 296 0 R 297 0 R 298 0 R 299 0 R 300 0 R 301 0 R 302 0 R 303 0 R 304 0 R 305 0 R ] >> endobj 10 0 obj << /Parent 1 0 R /Rotate 0 /Type /Page /Contents 306 0 R /Resources << /ExtGState << /R26 66 0 R >> /Font << /R29 76 0 R /F2 307 0 R /R125 186 0 R /F1 308 0 R /R41 72 0 R /R39 81 0 R /R93 121 0 R /R43 68 0 R /R27 96 0 R >> /ProcSet [ /ImageC /Text /PDF /ImageI /ImageB ] >> /MediaBox [ 0 0 612 792 ] /Annots [ 309 0 R 310 0 R 311 0 R 312 0 R 313 0 R 314 0 R 315 0 R 316 0 R 317 0 R 318 0 R 319 0 R 320 0 R 321 0 R 322 0 R 323 0 R 324 0 R 325 0 R ] >> endobj 11 0 obj << /Parent 1 0 R /Rotate 0 /Type /Page /Contents 326 0 R /Resources << /ExtGState << /R26 66 0 R >> /Font << /R29 76 0 R /F2 327 0 R /F1 328 0 R /R27 96 0 R /R39 81 0 R >> /ProcSet [ /ImageC /Text /PDF /ImageI /ImageB ] >> /MediaBox [ 0 0 612 792 ] /Annots [ 329 0 R 330 0 R 331 0 R 332 0 R 333 0 R 334 0 R 335 0 R 336 0 R 337 0 R 338 0 R 339 0 R 340 0 R 341 0 R 342 0 R 343 0 R 344 0 R 345 0 R 346 0 R 347 0 R 348 0 R 349 0 R 350 0 R 351 0 R 352 0 R 353 0 R 354 0 R 355 0 R 356 0 R 357 0 R 358 0 R 359 0 R 360 0 R 361 0 R 362 0 R 363 0 R 364 0 R 365 0 R 366 0 R 367 0 R 368 0 R 369 0 R 370 0 R 371 0 R 372 0 R 373 0 R 374 0 R 375 0 R 376 0 R ] >> endobj 12 0 obj << /Type /Catalog /Pages 1 0 R >> endobj 13 0 obj << /Length 18375 >> stream q q q 0.1 0 0 0.1 0 0 cm /R26 gs 0 g q 10 0 0 10 0 0 cm BT /R27 14.3462 Tf 1 0 0 1 122.31 675.067 Tm [ (Zigzag) -250.006 (Lear) 14.9893 (ning) -249.993 (f) 24.9923 (or) -249.995 (W) 65.0011 (eakly) -250 (Super) 10.0031 (vised) -249.99 (Object) -249.998 (Detection) ] TJ /R29 11.9552 Tf 31.5629 -37.8582 Td [ (Xiaopeng) -250.007 (Zhang) ] TJ /R31 7.9701 Tf 80.016 4.33906 Td [ (1) -0.30019 ] TJ /R29 11.9552 Tf 12.7031 -4.33906 Td [ (Jiashi) -249.993 (Feng) ] TJ /R31 7.9701 Tf 54.1316 4.33906 Td [ (1) -0.30019 ] TJ /R29 11.9552 Tf 12.7031 -4.33906 Td [ (Hongkai) -250 (Xiong) ] TJ /R31 7.9701 Tf 74.05 4.33906 Td [ (2) -0.30019 ] TJ /R29 11.9552 Tf 12.702 -4.33906 Td [ (Qi) -250.014 (T) 34.9898 (ian) ] TJ /R31 7.9701 Tf 36.4391 4.33906 Td [ (3) -0.30019 ] TJ -352.597 -27.8961 Td [ (1) -0.30019 ] TJ /R29 9.9626 Tf 7.72187 -4.33789 Td [ (National) -250.011 (Uni) 24.9909 (v) 14.9828 (ersity) -250.018 (of) -249.996 (Sing) 5.01142 (apore) ] TJ /R33 6.9738 Tf 136.244 3.61484 Td [ (2) -0.50062 ] TJ /R29 9.9626 Tf 6.95977 -3.61484 Td [ (Shanghai) -250.005 (Jiao) -249.983 (T) 79.9916 (ong) -249.983 (Uni) 24.9909 (v) 14.9828 (ersity) ] TJ /R33 6.9738 Tf 129.142 3.61484 Td [ (3) -0.50062 ] TJ /R29 9.9626 Tf 6.95977 -3.61484 Td [ (Uni) 24.9909 (v) 14.9828 (ersity) -250.017 (of) -249.997 (T) 69.9932 (e) 15.0122 (xas) -249.993 (at) -249.993 (San) -249.983 (Antonio) ] TJ /R35 8.9664 Tf -266.239 -13.948 Td [ (f) -0.8999 ] TJ /R37 8.9664 Tf 4.60664 0 Td (elezxi\054elefjia) Tj /R35 8.9664 Tf 75.3184 0 Td [ (g) -0.8999 ] TJ /R37 8.9664 Tf 4.60781 0 Td [ (\100nus\056edu\056sg) -888.982 (xionghongkai\100sjtu\056edu\056cn) -888.98 (qitian\100cs\056utsa\056edu) ] TJ /R27 11.9552 Tf -43.348 -41.0461 Td (Abstract) Tj /R39 9.9626 Tf -83.9281 -23.9289 Td [ (This) -230.988 (paper) -231.003 (addr) 36.9951 (esses) -231.01 (weakly) -231.988 (s) 0.98635 (upervised) -232.018 (object) -231.006 (detection) ] TJ -11.9547 -11.9551 Td [ (with) -301.015 (only) -300.996 (ima) 10.013 (g) 10.0032 (e\055le) 15.0122 (vel) -301.01 (supervision) -301.004 (at) -300.996 (tr) 14.9901 (aining) -301.013 (sta) 10.0155 (g) 10.0032 (e) 15.0122 (\056) -463.018 (Pr) 36.984 (e) 15.0122 (vi\055) ] TJ 11.9559 TL T* [ (ous) -350.984 (appr) 44.9937 (oac) 14.9834 (hes) -350.993 (tr) 14.9914 (ain) -350.983 (detection) -351.016 (models) -351.998 (wi) 1 (th) -352.007 (entir) 36.9963 (e) -351.005 (ima) 10.013 (g) 10.0032 (es) ] TJ 11.9551 TL T* [ (all) -356 (at) -356.987 (once) 10 (\054) -382.992 (making) -355.998 (the) -356.992 (models) -355.997 (pr) 44.9839 (one) -356.013 (to) -356.987 (being) -356.002 (tr) 14.9901 (apped) -356.985 (in) ] TJ T* [ (sub\055optimums) -203.01 (due) -203.019 (to) -201.993 (the) -203.018 (intr) 44.9986 (oduced) -203.014 (false) -203.003 (positive) -202.996 (e) 19.9918 (xamples\056) ] TJ T* [ (Unlik) 10.0161 (e) -351.985 (them\054) -378.002 (we) -352.011 (pr) 44.9839 (opose) -352.983 (a) -352.015 (zigza) 9.98853 (g) -352.015 (learning) -351.983 (str) 14.9975 (ate) 40 (gy) -352.02 (to) -352.988 (si\055) ] TJ T* [ (multaneously) -219.015 (disco) 10.0167 (ver) -220.005 (r) 37.0196 (eliable) -218.999 (object) -219.006 (instances) -218.99 (and) -219.988 (pr) 36.9865 (e) 15.0122 (vent) ] TJ T* [ (the) -289.003 (model) -288.995 (fr) 44.9864 (om) -289.983 (o) 10.0032 <766572027474> 0.99738 (ing) -290.013 (initial) -289.004 (seeds\056) -427.017 (T) 92 (owar) 37.0036 (ds) -290.018 (this) -288.986 (goal\054) ] TJ 11.9563 TL T* [ (we) -243.009 <0272> 10.0094 (st) -243.985 (de) 15.0177 (velop) -243.01 (a) -243.013 (criterion) -244.002 (named) -243.005 (mean) -243.011 (Ener) 36.984 (gy) -243.999 (Accumula\055) ] TJ 11.9547 TL T* [ (tion) -294.985 (Scor) 36.9859 (es) -295.008 (\050mEAS\051) -295.001 (to) -294.997 (automatically) -294.994 (measur) 36.9938 (e) -295.014 (and) -296.014 (r) 14.9828 (ank) -295.005 (lo\055) ] TJ T* [ (calization) -193.996 (dif) 18.0166 <0263756c7479> -193.011 (of) -193.995 (an) -193.017 (ima) 10.013 (g) 10.0032 (e) -194.012 (containing) -194 (the) -193.019 (tar) 36.9914 (g) 10.0032 (et) -194.004 (object\054) ] TJ T* [ (and) -239.984 (accor) 36.9816 (dingly) -240.014 (learn) -240.02 (the) -239.992 (detector) -239.982 (pr) 44.9839 (o) 10.0032 (gr) 36.9865 (essively) -239.989 (by) -240 (feeding) ] TJ T* [ (e) 19.9924 (xamples) -348.003 (with) -347.987 (incr) 36.9877 (easing) -349.015 (dif) 18.0166 <0263756c7479> 54.9871 (\056) -604.014 (In) -348.018 (this) -349.015 (way) 54.9859 (\054) -372.014 (the) -348.993 (mod\055) ] TJ 11.9559 TL T* [ (el) -354.997 (can) -354.994 (be) -354.019 (well) -355.016 (pr) 36.9852 (epar) 36.9865 (ed) -354.998 (by) -354.998 (tr) 14.9914 (aining) -353.985 (on) -354.99 (easy) -354.997 (e) 19.9918 (xamples) -354.982 (for) ] TJ 11.9551 TL T* [ (learning) -313.01 (f) 0.98758 (r) 45.0182 (om) -313 (mor) 36.9877 (e) -313.012 (dif) 18.0166 <0263756c74> -312.007 (ones) -312.994 (and) -312.012 (thus) -312.985 (gain) -312.004 (a) -313.002 (str) 44.9925 (ong) 10.013 (er) ] TJ T* [ (detection) -387.99 (ability) -387 (mor) 36.9877 (e) -388.019 (ef) 18 <026369656e746c79> 54.9896 (\056) -723.014 (Furthermor) 37.0183 (e) 9.99343 (\054) -422.006 (we) -388.004 (intr) 44.9974 (o\055) ] TJ T* [ (duce) -281.991 (a) -281.987 (no) 10.0081 (vel) -281.993 (masking) -282.004 (r) 37.0196 (e) 39.9884 (gularization) -282 (str) 14.9975 (ate) 40 (gy) -283.012 (o) 10.0032 (ver) -281.995 (the) -281.985 (high) ] TJ T* [ (le) 14.981 (vel) -283.013 (con) 39.9988 (volutional) -283.002 (featur) 37 (e) -283.997 (maps) -282.993 (to) -283 (avoid) -282.994 (o) 10.0032 <766572027474696e67> -283.997 (initial) ] TJ T* [ (samples\056) -642.019 (These) -360.981 (two) -361.012 (modules) -359.991 (formulate) -360.996 (a) -360.994 (zigza) 9.98853 (g) -360.994 (learning) ] TJ 11.9559 TL T* [ (pr) 44.9839 (ocess\054) -415.998 (wher) 36.9938 (e) -382.02 (pr) 44.9839 (o) 10.0032 (gr) 36.9852 (essive) -382.009 (learning) -382.999 (endeavor) 10.0106 (s) -382.01 (to) -382.983 (disco) 10.0179 (v\055) ] TJ 11.9551 TL T* [ (er) -257.014 (r) 37.0196 (eliable) -256.993 (object) -257 (instances\054) -259.019 (and) -257.001 (masking) -256.989 (r) 37.0183 (e) 39.9884 (gularization) -256.984 (in\055) ] TJ T* [ (cr) 37.0153 (eases) -390.005 (the) -390.005 (dif) 18.0166 <0263756c7479> -391.017 (of) -390.001 <026e64696e67> -389.981 (object) -389.999 (instances) -391 (pr) 44.9851 (operly) 54.9859 (\056) ] TJ T* [ (W) 91.9865 (e) -240.984 (ac) 15.0177 (hie) 14.9859 (ve) ] TJ /R41 9.9626 Tf 46.734 0 Td (47) Tj /R43 9.9626 Tf 9.96289 0 Td [ (\072) -0.80011 ] TJ /R41 9.9626 Tf 2.7668 0 Td [ (6\045) -0.30019 ] TJ /R39 9.9626 Tf 15.6844 0 Td [ (mAP) -241.008 (on) -241.009 (P) 89.9887 (ASCAL) -241.017 (V) 29.9987 (OC) -241.001 (2007\054) -242.996 (surpassing) ] TJ -75.148 -11.9551 Td [ (the) -249.99 (state\055of\055the\055arts) -249.982 (by) -249.996 (a) -249.993 (lar) 36.9926 (g) 10.0032 (e) -250.002 (mar) 36.9877 (gin\056) ] TJ /R27 11.9552 Tf 35.923 TL T* [ (1\056) -249.99 (Intr) 18.0146 (oduction) ] TJ /R29 9.9626 Tf 11.9547 -18.9469 Td [ (Current) -203.986 (state\055of\055the\055art) -203.994 (object) -203.989 (detection) -205 (performance) -204.005 (has) ] TJ -11.9547 -11.9563 Td [ (been) -352.018 (achie) 25.0148 (v) 14.9828 (ed) -351 (with) -351.998 (a) -351.985 (fully) -351.999 (supervised) -351.013 (paradigm\056) -615.99 (Ho) 24.9836 (we) 25.013 (v\055) ] TJ 11.9551 TL T* [ (er) 39.986 (\054) -378.013 (it) -352.006 (requires) -352.011 (a) -353.005 (lar) 17.997 (ge) -352.018 (quantity) -351.983 (of) -352.018 (high\055quality) -352.988 (object\055le) 24.9909 (v) 14.9828 (el) ] TJ T* [ (annotations) -307.003 (\050) ] TJ /R39 9.9626 Tf 52.3129 0 Td [ (i\056e) 14.9828 (\056) ] TJ /R29 9.9626 Tf 12.0238 0 Td [ (\054) -321.003 (object) -306.992 (bounding) -307.005 (box) 14.9926 (es\051) -307.01 (at) -307.005 (training) -307.017 (stages) ] TJ -64.3367 -11.9551 Td (\133) Tj ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 53.4297 152.731 Tm (1) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 58.4109 152.731 Tm [ (\135\054) -382.996 (\133) ] TJ ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 71.3523 152.731 Tm (2) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 76.3336 152.731 Tm [ (\135\054) -382.996 (\133) ] TJ ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 89.275 152.731 Tm (3) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 94.2563 152.731 Tm [ (\135\054) -416.01 (which) -383.018 (are) -383.007 (v) 14.9828 (ery) -382.017 (costly) -383.008 (to) -382.983 (collect\056) -709.002 (F) 14.9926 (ortunate\055) ] TJ -44.1441 -11.9551 Td [ (ly) 64.9818 (\054) -404.009 (the) -372.989 (pre) 25.013 (v) 24.9811 (ale) 1.01821 (nce) -373 (of) -372.995 (image) -372.981 (tags) -372.983 (allo) 24.9909 (ws) -372.987 (search) -373.001 (engines) -373.016 (to) ] TJ 11.9559 TL T* [ (quickly) -254.006 (pro) 14.9846 (vide) -255.004 (a) -254.002 (set) -255.008 (of) -253.996 (images) -254.994 (related) -253.993 (to) -255.004 (the) -253.989 (tar) 17.997 (get) -255.009 (cate) 15.0122 (go\055) ] TJ 11.9551 TL T* [ (ry) -301.007 (\133) ] TJ ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 64.7273 116.865 Tm (4) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 69.7086 116.865 Tm [ (\135\054) -301.989 (\133) ] TJ ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 81.843 116.865 Tm (5) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 86.8242 116.865 Tm [ (\135\054) -313.987 (making) -301.997 (image\055le) 24.9909 (v) 14.9828 (el) -301.006 (annotations) -301.984 (much) -300.991 (easier) -301.991 (to) ] TJ -36.7121 -11.9551 Td [ (acquire\056) -307.004 (Hence) -242.984 (it) -241.984 (is) -243.005 (more) -241.989 (appealing) -242.017 (to) -243.006 (learn) -241.999 (detection) -242.994 (mod\055) ] TJ 11.9551 TL T* [ (els) -279.983 (from) -279.982 (such) -279.98 (weakly) -279.001 (labeled) -279.981 (images\056) -399.987 (In) -279.99 (this) -278.988 (paper) 39.9909 (\054) -287.989 (we) -279.995 (fo\055) ] TJ T* [ (cus) -257.009 (on) -255.987 (object) -257 (detection) -256.012 (under) -257.009 (a) -256.982 (weakly) -255.984 (supervised) -256.989 (paradig\055) ] TJ ET Q q 3131.35 4791.19 2277.06 851.648 re W n /R64 Do Q q 10 0 0 10 0 0 cm BT /R29 8.9664 Tf 1 0 0 1 308.862 468.16 Tm [ (Figure) -557.991 (1\056) -557.006 (Object) -558.016 (dif) 25.0011 <0263756c7479> -557.011 (scores) -557.986 (predicted) -556.995 (by) -557.986 (our) -557 (proposed) ] TJ 10.959 TL T* [ (mEAS\056) -234 (Higher) -233.982 (scores) -232.988 (indicate) -234.017 (the) -234 (object) -234.012 (is) -233.021 (easier) -234 (to) -233.979 (localize\056) -303.983 (This) ] TJ T* [ (paper) -327.01 (proposes) -326.983 (a) -327.98 (zigzag) -327.008 (learning) -326.991 (based) -326.991 (detector) -327.013 (to) -326.991 (progressi) 25.0174 (v) 14.9865 (ely) ] TJ T* [ (learn) -276.989 (from) -277.008 (object) -277.008 (instances) -277.019 (in) -276.978 (the) -277 (order) -276.994 (according) -277.011 (to) -276.978 (mEA) 0.99656 (S\054) -276.994 (with) ] TJ T* [ (a) -235.011 (no) 14.9865 (v) 14.9865 (el) -235.003 (masking) -235.991 (re) 14.9974 (gularization) -234.986 (to) -234.981 (a) 20.0238 (v) 19.9965 (oid) -234.981 (o) 14.9865 (v) 14.9865 <6572027474696e67> -234.981 (initial) -235.008 (samples\056) ] TJ /R29 9.9626 Tf 27.907 TL T* [ (m\054) -245.003 (where) ] TJ /R39 9.9626 Tf 39.4438 0 Td [ (only) -243.006 (ima) 10.013 (g) 10.0032 (e\055le) 15.0122 (vel) -243.999 (labels) ] TJ /R29 9.9626 Tf 94.3582 0 Td [ (indicating) -243.018 (the) -243.989 (presence) -242.984 (of) ] TJ -133.802 -11.9551 Td [ (an) -249.997 (object) -249.983 (are) -250.01 (a) 19.9918 (v) 24.9811 (ailable) -249.983 (during) -250.012 (training\056) ] TJ 11.9551 -14.2469 Td [ (The) -328.019 (main) -328.004 (challenge) -328.011 (in) -328.014 (weakly) -328.994 (supervised) -327.994 (object) -328.009 (detec\055) ] TJ -11.9551 -11.9551 Td [ (tion) -347.996 (is) -346.989 (ho) 24.986 (w) -348.018 (to) -348.008 (disentangle) -347.986 (object) -346.986 (instances) -347.996 (from) -348.011 (the) -348.011 (com\055) ] TJ 11.9551 TL T* [ (ple) 14.9852 (x) -259.011 (backgrounds\056) -337.99 (Most) -260.006 (pre) 25.0105 (vious) -258.986 (methods) -259.021 (model) -258.991 (the) -259.986 (miss\055) ] TJ T* [ (ing) -316.009 (object) -316.991 (locations) -315.991 (as) -315.984 (latent) -316.006 (v) 24.9811 (ariables\054) -332.993 (and) -315.982 (optimize) -317.011 (them) ] TJ T* [ (via) -318.018 (dif) 24.986 (ferent) -319.008 (heuris) 0.99493 (tic) -318.996 (methods) -317.991 (\133) ] TJ ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 439.163 322.395 Tm (6) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 444.145 322.395 Tm [ (\135\054) -317.986 (\133) ] TJ ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 456.438 322.395 Tm (7) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 461.42 322.395 Tm [ (\135\054) -319.006 (\133) ] TJ ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 473.723 322.395 Tm (8) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 478.705 322.395 Tm [ (\135\056) -513.993 (Among) -319.015 (them\054) ] TJ -169.843 -11.9559 Td [ (a) -333.008 (typical) -332 (solution) -332.996 (is) -332.011 (alternating) -333.013 (between) -332.018 (model) -333.018 (re\055training) ] TJ 11.9551 TL T* [ (and) -223.997 (object) -225.007 (re\055localization\054) -228.996 (which) -225.007 (shares) -223.997 (a) -224.987 (similar) -224.007 (spirit) -224.992 (with) ] TJ T* [ (Multiple) -219.995 (Instance) -219.995 (Learning) -221.007 (\050MIL\051) -219.998 (\133) ] TJ ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 449.335 286.529 Tm (9) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 454.316 286.529 Tm [ (\135\054) -220.003 (\133) ] TJ ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 465.634 286.529 Tm (10) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 475.596 286.529 Tm [ (\135\054) -220.983 (\133) ] TJ ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 486.923 286.529 Tm (11) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 496.886 286.529 Tm [ (\135\056) -299.989 (Ne) 25.0154 (v) 14.9828 (erthe\055) ] TJ -188.024 -11.9551 Td [ (less\054) -274.016 (such) -267.982 (optimization) -268.994 (is) -269 (non\055con) 40.0129 (v) 14.9828 (e) 15.0122 (x) -269.009 (and) -269.009 (easy) -269.014 (to) -269.004 (get) -269.004 (stuck) ] TJ 11.9551 TL T* [ (in) -354.007 (local) -354.01 (minimums) -353.992 (if) -354.014 (the) -354.01 (latent) -354 (v) 24.9811 (ariables) -354.01 (are) -353.99 (not) -354 (properly) ] TJ T* [ (initialized\056) -416.987 (Then) -285.982 (mining) -285.989 (object) -284.997 (instances) -286.006 (with) -286.006 (only) -286.006 (image\055) ] TJ 11.9559 TL T* [ (le) 25.0179 (v) 14.9828 (el) -315.984 (labels) -316.009 (becomes) -316.011 (a) -315.991 (classical) -316.011 (chick) 10.0081 (en\055and\055e) 15.0122 (gg) -316.016 (problem\072) ] TJ 11.9551 TL T* [ (without) -303.008 (an) -303.008 (accurate) -304 (detection) -302.984 (model\054) -315.996 (object) -304.013 (inst) 1.00473 (ances) -303.988 (can\055) ] TJ T* [ (not) -199.989 (be) -200.006 (disco) 14.9975 (v) 14.9828 (ered\054) -210.009 (while) -199.989 (an) -200.006 (accurate) -201 (detection) -199.981 (model) -199.981 (cannot) ] TJ T* [ (be) -249.997 (learned) -249.997 (without) -249.997 (appropriate) -249.983 (object) -249.983 (e) 15.0122 (xamples\056) ] TJ 11.9551 -14.2469 Td [ (T) 79.9916 (o) -200.981 (solv) 15 (e) -200.011 (this) -201 (problem\054) -210.014 (this) -201 (paper) -200.986 (proposes) -199.981 (a) ] TJ /R39 9.9626 Tf 173.699 0 Td [ (zigza) 9.98853 (g) ] TJ /R29 9.9626 Tf 27.3629 0 Td (learn\055) Tj -213.017 -11.9551 Td [ (ing) -304.991 (strate) 14.9852 (gy) -304.998 (for) -305.01 (weakly) -306.015 (supervised) -304.979 (object) -304.993 (detection\054) -319.02 (which) ] TJ T* [ (aims) -266.992 (at) -265.992 (mining) -267.012 (reliable) -265.985 (object) -267 (instances) -266.99 (for) -265.995 (model) -266.99 (training\054) ] TJ T* [ (and) -243.013 (meanwhile) -242.991 (a) 19.9918 (v) 20.0016 (oiding) -242.004 (getting) -242.984 (trapped) -243.008 (in) -243.008 (local) -243.008 (minimum\055) ] TJ T* [ (s\056) -525.981 (As) -322.015 (our) -320.998 <02727374> -322 (contrib) 20.0187 (ution\054) -339.987 (dif) 24.986 (ferent) -321.99 (from) -322.015 (pre) 25.0105 (vious) -321.995 (w) 10.0032 (ork\055) ] TJ T* [ (s) -340.997 (which) -340.007 (perform) -340.995 (model) -341.017 (training) -339.992 (and) -340.997 (object) -340.987 (re\055localization) ] TJ 11.9559 TL T* [ (o) 14.9828 (v) 14.9828 (er) -311.995 (the) -312.019 (entir) 0.99248 (e) -311.992 (images) -312.004 (all) -312.017 (at) -311.002 (once) -311.987 (\133) ] TJ ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 450.371 116.865 Tm (10) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 460.334 116.865 Tm [ (\135\054) -311.987 (\133) ] TJ ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 472.568 116.865 Tm (11) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 482.53 116.865 Tm [ (\135\054) -311.987 (\133) ] TJ ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 494.764 116.865 Tm (12) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 504.727 116.865 Tm [ (\135\054) -327.004 (we) -311.987 (pro\055) ] TJ -195.865 -11.9551 Td [ (gressi) 24.9934 (v) 14.9828 (ely) -404.984 (feed) -404.999 (the) -404.984 (images) -405.011 (into) -405.006 (the) -404.981 (learning) -405.991 (model) -405.006 (in) -405.021 (an) ] TJ 11.9551 TL T* [ (easy\055to\055dif) 24.9934 <0263756c74> -290.981 (order) -289.991 (\133) ] TJ ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 402.381 92.9551 Tm (13) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R29 9.9626 Tf 1 0 0 1 412.343 92.9551 Tm [ (\135\056) -432.987 (T) 79.9916 (o) -291.005 (this) -290.006 (end\054) -300.999 (we) -291.01 (propose) -290.991 (an) -291.01 (ef\055) ] TJ -103.481 -11.9551 Td [ (fecti) 25.0179 (v) 14.9828 (e) -323.99 (criterion) -324.007 (named) -324.01 (mean) -324.015 (Ener) 17.997 (gy) -324.995 (Accumulated) -323.995 (Scores) ] TJ ET Q Q Q q q 1 1 1 rg /a0 gs 48.406 786.422 515.188 -52.699 re f q /s5 gs /x6 Do Q q /s7 gs /x8 Do Q q /s9 gs /x10 Do Q q /s11 gs /x12 Do Q Q Q Q q 1 0 0 1 0 0 cm BT /F1 12 Tf 14.4 TL ET 1 1 1 rg n 270 32 72 14 re f* 0.5 0.5 0.5 rg BT /F2 9 Tf 10.8 TL ET BT 1 0 0 1 297 35 Tm (4262) Tj T* ET Q endstream endobj 14 0 obj << /Filter /FlateDecode /Resources << /ExtGState << /a0 << /CA 1 /ca 1 >> >> /XObject << /x18 15 0 R >> >> /Length 28 /Group << /Type /Group /S /Transparency /CS /DeviceRGB /I true >> /BBox [ 78 746 96 765 ] /Type /XObject /Subtype /Form >> stream x+O4PH/VЯ0Pp 0 endstream endobj 15 0 obj << /Filter /FlateDecode /Resources 16 0 R /Length 107 /Type /XObject /BBox [ 78 746 96 765 ] /Subtype /Form >> stream xe AC̬wʠ =p,?]%+H-
Jc "82w8VSnGW;" endstream endobj 16 0 obj << /ExtGState << /a0 << /CA 1 /ca 1 >> >> >> endobj 17 0 obj << /SMask 18 0 R /Filter /FlateDecode /BitsPerComponent 8 /Height 118 /Length 2685 /ColorSpace 19 0 R /Width 1113 /Subtype /Image >> stream x}_iqyvTpѨи1RhY-(Sa]$;4aA}:9ff ?5njM* Xdsw*f҂!Y fu]4Y{ 95u-Ȼ?{` ľ(~xNmLj&X