·144 智 能系统学 报 第11卷 (m)Sequence bike(228 frames) (n)Sequence cardark(393 frames) (o)Sequence jumping(313 frames) Fig.4 Some tracking results C-tracker NLSSSC-tracker 350 NLSSSC-tracker acker 800 C-tracker 250 ELSS SC-trackerl 300 racker ELSSSC-tracker2 ELSSSC-tracker2 250 II-tracke 700 -11-tracker 200 I-tracker -VT IVT 200 8 150 100 50 100 (E 50 100150200250300350 #Frame #Frame #Frame (a)Sequence surfer(375 frames) (b)Sequence dudek(1145 frames) (c)Sequence faceocc2(819 frames) NLSSSC-tracker NLSSSC-tracker er 300 700 150 NLSSSC-acker 250 racker 600 -tracker2 IVT 200 CovTracking 100 400 CovTracking 300 100 200 0 50 100 nk 100 200.300 400 500 050100150200250300350400 #Frame #F ame #Frame (d)Sequence animal(71 frames) (e)Sequence girl(500 frames) (f)Sequence S tone (593 frames) 350 LSSSC-tracker NISSSC-trac 250 NLSSSC-tracker 300 ELSSSC-trackerl 120 C-trac -tracker 250 ELSSSC-tracker2 100 ELSSSC-tracker2 200 SC-tracke I-tracker tracker cker 200 VT IVT 20 150 CovTracking 00 CovTracking 100 100 50 50 85 0 50 100150200250300350 0 50 100150200 250300 0 50 100150200250300350400 #Frame #Frame #Frame (g)Sequence car(374 frames) (h)Sequence cup (303 frames) (i)Sequence face (415 frames) NLSSSC-tracker -NLSSSC-tracker 400 SC-tracker 500 SC-tracker 500 -tracker 350 ELSSSC-tracker2 ELSSSC-tracker2 C-tracker2 300 11-tracker 400 -tracker IVT 250 CovTracking cking 300 CevTracking 200 150 200 100 5s0 100 100 0 50 100150200250300350 400 0 50 100150200250300350 0 20 40 60 80100120140160 #Frame #Frame #Frame (j)Sequence juice (404 frames) (k)Sequence singer(351 frames) (1)Sequence sunshade (172 frames) NLSSSC-tra cke ker SSS C-tracker NLSSSC-tracker 400 150 -tracker 250 C-tracker 350 I-tracker ELSSSC-tracker2 300 200 II-tracker CovTracking 100 IVT 200 CoyTracking 50 100 50 50 的 50 100 150 200 050100150200250300350400 0 50100150200250300 #Frame #Frame #Frame (m)Sequence bike (228 frames) (n)Sequence cardark(393 frames) (o)Sequence jumping (313 frames) Fig.5 Quantitative evaluation in terms of center location error in pixel)Ｆｉｇ． ４ Ｓｏｍｅ ｔｒａｃｋｉｎｇ ｒｅｓｕｌｔｓ Ｆｉｇ． ５ Ｑｕａｎｔｉｔａｔｉｖｅ ｅｖａｌｕａｔｉｏｎ ｉｎ ｔｅｒｍｓ ｏｆ ｃｅｎｔｅｒ ｌｏｃａｔｉｏｎ ｅｒｒｏｒ （ｉｎ ｐｉｘｅｌ） ·１４４· 智 能 系 统 学 报 第 １１ 卷