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(videos) -381.99000 (by) ] TJ -92.81130 -11.95510 Td [ (using) -363.99000 (a) -363.98300 (tw) 10.00810 (o\055stream) -364.00300 (v) 24.98110 (ariant) -364.01000 (\133) ] TJ ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R40 9.96260 Tf 1 0 0 1 166.08700 177.31400 Tm (9) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R40 9.96260 Tf 1 0 0 1 171.06800 177.31400 Tm (\054) Tj ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R40 9.96260 Tf 1 0 0 1 177.18500 177.31400 Tm (29) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R40 9.96260 Tf 1 0 0 1 187.14800 177.31400 Tm (\054) Tj ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R40 9.96260 Tf 1 0 0 1 193.26500 177.31400 Tm (48) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R40 9.96260 Tf 1 0 0 1 203.22700 177.31400 Tm [ (\135\054) -392.99300 (in) -364.00500 (which) -364.00300 (both) -363.99600 (ap\055) ] TJ -153.11500 -11.95510 Td [ (pearance) -191.98300 (and) -192.98200 (motion) -192.00500 (are) -192.01900 (used) -191.99500 (as) -192.98600 (inputs\056) -289.99300 (Modern) -193.00700 (approaches) ] TJ 11.95590 TL T* [ <02727374> -322 (use) -320.99900 (such) -322.01200 (a) -321.99000 (detector) -320.99700 (to) -322.01200 (localize) -322.01600 (human) -320.98300 (actions) -322.00300 (in) -322.01200 (indi\055) ] TJ 11.95510 TL T* [ (vidual) -266.00900 (frames\054) -269.98800 (and) -265.98900 (then) -265.98300 (either) -265.98700 (link) -266.01000 (them) -266.01400 (or) -267.01200 (track) -265.99500 (them) -266.01400 (o) 14.98280 (v) 14.98280 (er) ] TJ T* [ (time) -256.99400 (to) -257.98400 (create) -256.99000 (spatio\055temporal) -257.98800 (detections) -256.98700 (\133) ] TJ ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R40 9.96260 Tf 1 0 0 1 218.43000 129.49300 Tm (9) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R40 9.96260 Tf 1 0 0 1 223.41100 129.49300 Tm (\054) Tj ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R40 9.96260 Tf 1 0 0 1 228.47200 129.49300 Tm (29) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R40 9.96260 Tf 1 0 0 1 238.43400 129.49300 Tm (\054) Tj ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R40 9.96260 Tf 1 0 0 1 243.48600 129.49300 Tm (48) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R40 9.96260 Tf 1 0 0 1 253.44800 129.49300 Tm [ (\135\056) -333.00300 (These) ] TJ ET Q 3.98000 w 0 G 501.12100 1196.01000 m 1446.11000 1196.01000 l S q 10 0 0 10 0 0 cm BT /R40 5.97760 Tf 1 0 0 1 60.97110 112.73500 Tm (1) Tj /R40 7.97010 Tf 3.48672 -2.81328 Td [ (Uni) 25.00500 (v) 64.97600 (\056) -537.02400 (Gre) 1.01852 (noble) -536.99400 (Alpes\054) -607.97900 (Inria\054) -608.00500 (CNRS\054) -536.98300 (Grenoble) -536.02400 (INP) 111.00800 (\054) -537.02300 (LJK\054) -536.00600 (38000) ] TJ -14.34570 -9.46406 Td [ (Grenoble\054) -250 (France) ] TJ /R40 5.97760 Tf 10.85900 -6.91563 Td (2) Tj /R40 7.97010 Tf 3.48672 -2.81328 Td [ (Uni) 25.00500 (v) 14.98440 (ersity) -249.98400 (of) -250.00400 (Edinb) 19.98900 (ur) 17.99020 (gh) ] TJ /R40 5.97760 Tf -3.48672 -6.91602 Td (3) Tj /R40 7.97010 Tf 3.48672 -2.81289 Td [ (Na) 20.01730 (v) 14.98440 (er) -249.98300 (Labs) -249.99100 (Europe) ] TJ ET Q q 3192.31000 5501.86000 743.53500 559.40600 re W n q 743.53800 0 0 559.40000 3192.31000 5501.87000 cm /R44 Do Q 10.40950 w 4 M 1 1 0 RG 3666.63000 5685.55000 73.26560 126.77300 re S Q q 3192.31000 5501.87000 2235.26000 559.39800 re W n 0 0 0 rg 3870.48000 5709.45000 60.38280 156.88300 re f 10.40950 w 4 M 1 1 0 RG 3870.48000 5709.45000 60.38280 156.88300 re S Q q 3938.17000 5501.86000 743.53900 559.40600 re W n q 743.53800 0 0 559.40000 3938.17000 5501.87000 cm /R45 Do Q 10.40950 w 4 M 1 1 0 RG 4285.47000 5670 145.88700 166.55100 re S Q q 4684.04000 5501.86000 743.53900 559.40600 re W n q 743.53800 0 0 559.40000 4684.03000 5501.87000 cm /R46 Do Q 10.40950 w 4 M 1 1 0 RG 4851.74000 5557.54000 302.25000 355.43800 re S Q q 3192.31000 5501.87000 2235.26000 559.39800 re W n 1 1 1 rg q 10 0 0 10 0 0 cm BT /R47 7.43538 Tf 1 0 0 1 371.35900 563.43100 Tm [ (a) -9.99497 (d) -11.00300 (u) 0.99818 (l) -2.97485 (t\055) ] TJ -7.05781 -9.29414 Td [ (r) 17.00850 (u) 0.99818 (n) -3.00768 (n) 0.99818 (in) -1.98323 (g) ] TJ -27.37420 31.94880 Td [ (d) -11.00300 (o) -2.99455 (g) -11.00300 (\055) 94.02300 (j) 66.97680 (u) 0.99818 (m) 1.00147 (p) -11.97820 (i) -3.02082 (n) 0.99818 (g) ] TJ 140.85200 9.19805 Td [ (d) -11.00630 (o) -2.99455 (g) -11.00630 (\055) 94.02630 (r) 17.00850 (u) 0.99818 (n) -2.00950 (n) 0.99818 (i) -2.97485 (n) 0.99818 (g) ] TJ -64.63910 -6.40977 Td [ (d) -11.00630 (o) -2.99455 (g) -11.00630 (\055) 94.02630 (j) 66.97680 (u) 0.99818 (m) 0.99818 (p) -11.97820 (i) -3.02082 (n) 0.99818 (g) ] TJ ET Q Q q 3192.31000 5079.59000 743.53500 418.89500 re W n q 743.53800 0 0 418.89500 3192.31000 5079.59000 cm /R49 Do Q 10.40950 w 4 M 1 1 0 RG 3251.77000 5093.57000 268.53500 255.83200 re S Q q 3938.17000 5079.59000 743.53900 418.89500 re W n q 743.53800 0 0 418.89500 3938.17000 5079.59000 cm /R50 Do Q 10.40950 w 4 M 1 1 0 RG 4054.74000 5152.71000 290.27000 335.65600 re S Q q 4684.04000 5079.59000 743.53900 418.89500 re W n q 743.53800 0 0 418.89500 4684.03000 5079.59000 cm /R51 Do Q 10.40950 w 4 M 0.90234 1 0 RG 4887.85000 5245.59000 193.53100 114.60200 re S 1 1 0 RG 5035.63000 5285.85000 94.54690 93.73440 re S Q q 3192.31000 5079.59000 2235.26000 418.89500 re W n 1 1 1 rg q 10 0 0 10 0 0 cm BT /R52 7.43538 Tf 1 0 0 1 354.92800 525.91000 Tm [ (c) -27.00350 (a) -9.99497 (t ) 1.00147 ] TJ 9.29453 TL T* [ (c) -27.00350 (l) -3.02082 (im) -2.98798 (b) -10.00480 (i) -3.02082 (n) 0.99818 (g) ] TJ 0 9.29453 Td [ (c) -27.00350 (a) -9.99497 (t\055) 96 ( ) 1.00147 ] TJ T* [ (c) -27.00350 (l) -3.02082 (im) -2.98798 (b) -10.00480 (i) -3.02082 (n) 0.99818 (g) ] TJ 81.16450 19.31680 Td [ (c) -27.00350 (a) -9.99497 (t\055) 96.00290 ( ) 0.99818 ] TJ T* [ (j) 66.97680 (u) 0.99818 (m) 0.99818 (p) -11.97820 (i) -3.02082 (n) 0.99818 (g) ] TJ 67.03440 14.05860 Td [ (c) -27.00350 (a) -9.99497 (t\055) 96.00290 (n) -2.00293 (o) -3.99273 (n) 0.99818 (e) 1.00475 ] TJ -23.33050 -23.33050 Td [ (c) -27.00350 (a) -9.99497 (t\055) 96.00290 (n) -2.00293 (o) -3.99273 (n) 0.99818 (e) 1.00475 ] TJ ET Q Q q 3192.31000 4481.38000 2235.26000 594.83200 re W n q 743.53800 0 0 594.83100 3192.31000 4481.38000 cm /R54 Do Q 10.40950 w 4 M 1 1 0 RG 3292.70000 4769.79000 308.22300 128.21900 re S 3345.47000 4624.06000 129.57800 157.27000 re S Q q 3938.17000 4481.38000 743.53900 594.83200 re W n q 743.53800 0 0 594.83100 3938.17000 4481.38000 cm /R55 Do Q 10.40950 w 4 M 1 1 0 RG 4116.36000 4729.39000 149.25800 151.63300 re S 4378.22000 4572.33000 59.62500 142.18000 re S Q q 4684.04000 4481.38000 743.53900 594.83200 re W n q 743.53800 0 0 594.83100 4684.03000 4481.38000 cm /R56 Do Q 10.40950 w 4 M 1 1 0 RG 4701.62000 4549.81000 59.51950 146.72700 re S 4823.13000 4705.61000 233.58200 126.74200 re S Q q 3192.31000 4481.38000 2235.26000 594.83200 re W n 1 1 1 rg q 10 0 0 10 0 0 cm BT /R57 7.43538 Tf 1 0 0 1 327.32600 493.95200 Tm [ (c) -27.00350 (a) -9.99497 (r) 78.00280 (\055) 94.02300 (r) 17.00850 (u) 0.99818 (n) -2.00950 (n) 0.99818 (i) -2.97485 (n) 0.99818 (g) ] TJ 73.77070 -1.31445 Td [ (c) -27.00350 (a) -9.99497 (r) 78.00280 (\055) 94.02630 (r) 37.02470 (o) -2.99455 (ll) -4.99092 (i) -3.02082 (n) 0.99818 (g) ] TJ 100.17900 -28.45200 Td [ (c) -27.00350 (a) -9.99497 (r) 78.00280 (\055) 94.02630 (r) 37.02470 (o) -2.99455 (ll) -4.99092 (i) -3.02082 (n) 0.99818 (g) ] TJ /R57 6.69184 Tf -23.93590 -8.12031 Td [ (a) -9.99607 (d) -10.99610 (u) 1 (l) -2.99163 (t\055) 95.97300 (r) 14.00990 (u) 1 (n) 1 (n) -2.99127 (in) -1.99163 (g) ] TJ -59.32890 -4.72266 Td [ (a) -9.99607 (d) -10.99610 (u) 1 (l) -2.99163 (t\055) 95.97300 (r) 14.00990 (u) 1 (n) 1 (n) -2.99127 (in) -1.99163 (g) ] TJ -89.45700 2.32344 Td [ (a) -9.99242 (d) -10.99240 (u) 1 (l) -2.98798 (t\055) 95.97670 (n) -1.98434 (o) -3.00222 (n) 1 (e) 1 ] TJ ET Q Q q 10 0 0 10 0 0 cm BT /R40 9.96260 Tf 1 0 0 1 308.86200 439.81000 Tm [ (Figure) -504.98900 (1\072) ] TJ /R42 9.96260 Tf 46.97110 0 Td [ (Detection) -504.99200 (e) 19.99180 (xamples) -506.01400 (of) -505.00400 (dif) 18.01660 (fer) 36.98400 (ent) -505.00400 (object\055action) ] TJ -46.97110 -11.95630 Td [ (pair) 9.98118 (s) -249.99300 (for) -250.02000 (the) -249.99000 (videos) -249.98300 (of) -249.98500 (the) -249.98800 (A2D) -249.98800 (dataset) -250.00700 (\133) ] TJ ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R42 9.96260 Tf 1 0 0 1 469.27000 427.85400 Tm (50) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R42 9.96260 Tf 1 0 0 1 479.23200 427.85400 Tm (\135\056) Tj /R40 9.96260 Tf -170.37000 -20.26480 Td [ (methods) -250 (focus) -249.99000 (e) 15.01220 (xclusi) 25.00320 (v) 14.98280 (ely) -249.98800 (on) -249.98800 (human) -250.01200 (action) -249.98300 (recognition\056) ] TJ 11.95510 -13.85510 Td [ (While) -393.01800 (humans) -393.98300 (or) -392.99100 (actions) -393.99300 (alone) -392.98300 (are) -393.98300 (b) 20.00160 (uilding) -392.99300 (blocks) -393.98800 (of) ] TJ -11.95510 -11.95510 Td [ (video) -334.00600 (understanding\054) -354.01200 (the) -334.01500 (relationship) -332.99800 (between) -334.01800 (objects) -334.00300 (and) ] TJ 11.95510 TL T* [ (actions) -363.99600 (can) -365 (yield) -363.99800 (a) -365.00300 (more) -364.00800 (complete) -365.01300 (interpretation\056) -652.98900 (F) 14.99260 (or) -364.99800 (in\055) ] TJ 11.95590 TL T* [ (stance\054) -374.98900 (an) -349 (autonomous) -350.00800 (car) -349.99100 (should) -349.98600 (not) -350 (only) -349.01500 (be) -350.02000 (able) -350.01500 (to) -350.01000 (de\055) ] TJ 11.95510 TL T* [ (tect) -332.99800 (another) ] TJ /R42 9.96260 Tf 50.90510 0 Td (car) Tj /R40 9.96260 Tf 16.82970 0 Td [ (\050object\051) -332.99300 (or) -333.98300 (a) ] TJ /R42 9.96260 Tf 53.66800 0 Td [ (human) -332.97900 (walking) ] TJ /R40 9.96260 Tf 65.31210 0 Td [ (\050action\051\054) -354.01000 (b) 20.00160 (ut) ] TJ -186.71500 -11.95470 Td [ (also) -360.98400 (a) ] TJ /R42 9.96260 Tf 27.66870 0 Td [ (do) 10.00810 (g) -360.99400 (running) ] TJ /R40 9.96260 Tf 53.59220 0 Td [ (or) -360.99600 (a) ] TJ /R42 9.96260 Tf 19.91910 0 Td [ (ball) -361.01300 <0379696e67> ] TJ /R40 9.96260 Tf 44.83400 0 Td [ (\050object\055action\051\056) -643.00500 (Other) ] TJ -146.01400 -11.95510 Td [ (applications) -269.01100 (include) -270.01400 (content\055based) -268.98900 (retrie) 25.01540 (v) 24.98110 (al\054) -273.98900 (video) -270.01400 (caption\055) ] TJ T* [ (ing) -425.01000 (\133) ] TJ ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R40 9.96260 Tf 1 0 0 1 329.14600 310.04800 Tm (43) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R40 9.96260 Tf 1 0 0 1 339.10900 310.04800 Tm (\054) Tj ET Q 0 1 0 rg q 10 0 0 10 0 0 cm BT /R40 9.96260 Tf 1 0 0 1 345.82300 310.04800 Tm (52) Tj ET Q 0 g q 10 0 0 10 0 0 cm BT /R40 9.96260 Tf 1 0 0 1 355.78600 310.04800 Tm [ (\135) -424.99000 (and) -424.98300 (health\055care) -424.01300 (robots\054) -468.01000 (for) -424.98800 (instance) -425.00800 (helping) ] TJ -46.92380 -11.95510 Td [ (blind) -379.98600 (people) -380.98100 (crossing) -379.98800 (streets\056) -701.98600 (Therefore\054) -412.99500 (to) -380.00500 (better) -380.98500 (under) 20.00650 (\055) ] TJ 11.95590 TL T* [ (stand) -282.01200 (videos\054) -290.00300 (we) -283.01400 (need) -281.99000 (to) -282.01900 (go) -281.98200 (be) 15.01710 (yond) -282.01200 (these) -283.00200 (tw) 10.00810 (o) -281.98700 (independent) ] TJ 11.95510 TL T* [ (tasks) -405.01100 (of) -404.00900 (object) -405.01600 (and) -404.98600 (human) -405.00600 (action) -403.99600 (recognition) -404.99600 (and) -404.98600 (under) 20.00650 (\055) ] TJ T* [ (stand) -250.01700 (the) -249.99000 (relationship) -249.99300 (between) -249.99300 (objects) -250.01700 (and) -249.99300 (actions\056) ] TJ 11.95470 -13.85470 Td [ (In) -307.00500 (this) -308.00300 (paper) 39.99090 (\054) -321.98300 (we) -307.01000 (propose) -308.00700 (t) 0.98513 (o) -307.98300 (jointly) -307.00300 (detect) -307.98300 (object\055action) ] TJ -11.95470 -11.95510 Td [ (instances) -337.01700 (in) -336.99000 (uncontrolled) -337.00300 (videos\054) ] TJ /R42 9.96260 Tf 136.78900 0 Td [ (e) 15.01220 (\056g) ] TJ /R40 9.96260 Tf 11.74570 0 Td (\056) Tj /R42 9.96260 Tf 5.85000 0 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