IEEE Trans Image Process - Large disparity motion layer extraction via topological clustering.

Tópicos

{ motion(1329) object(1292) video(1091) }
{ method(1969) cluster(1462) data(1082) }
{ method(1557) propos(1049) approach(1037) }
{ model(2341) predict(2261) use(1141) }
{ result(1111) use(1088) new(759) }
{ method(1219) similar(1157) match(930) }
{ imag(2675) segment(2577) method(1081) }
{ algorithm(1844) comput(1787) effici(935) }
{ model(2220) cell(1177) simul(1124) }
{ structur(1116) can(940) graph(676) }
{ bind(1733) structur(1185) ligand(1036) }
{ perform(1367) use(1326) method(1137) }
{ group(2977) signific(1463) compar(1072) }
{ first(2504) two(1366) second(1323) }
{ process(1125) use(805) approach(778) }
{ can(774) often(719) complex(702) }
{ imag(1947) propos(1133) code(1026) }
{ take(945) account(800) differ(722) }
{ problem(2511) optim(1539) algorithm(950) }
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{ model(2656) set(1616) predict(1553) }
{ data(2317) use(1299) case(1017) }
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{ cost(1906) reduc(1198) effect(832) }
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{ gene(2352) biolog(1181) express(1162) }
{ data(3008) multipl(1320) sourc(1022) }
{ intervent(3218) particip(2042) group(1664) }
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{ high(1669) rate(1365) level(1280) }
{ cancer(2502) breast(956) screen(824) }
{ use(976) code(926) identifi(902) }
{ use(1733) differ(960) four(931) }
{ survey(1388) particip(1329) question(1065) }
{ decis(3086) make(1611) patient(1517) }
{ activ(1452) weight(1219) physic(1104) }
{ method(2212) result(1239) propos(1039) }
{ detect(2391) sensit(1101) algorithm(908) }

Resumo

In this paper, we present a robust and efficient approach to extract motion layers from a pair of images with large disparity motion. First, motion models are established as: 1) initial SIFT matches are obtained and grouped into a set of clusters using our developed topological clustering algorithm; 2) for each cluster with no less than three matches, an affine transformation is estimated with least-square solution as tentative motion model; and 3) the tentative motion models are refined and the invalid models are pruned. Then, with the obtained motion models, a graph cuts based layer assignment algorithm is employed to segment the scene into several motion layers. Experimental results demonstrate that our method can successfully segment scenes containing objects with large interframe motion or even with significant interframe scale and pose changes. Furthermore, compared with the previous method invented by Wills and its modified version, our method is much faster and more robust.

Resumo Limpo

paper present robust effici approach extract motion layer pair imag larg dispar motion first motion model establish initi sift match obtain group set cluster use develop topolog cluster algorithm cluster less three match affin transform estim leastsquar solut tentat motion model tentat motion model refin invalid model prune obtain motion model graph cut base layer assign algorithm employ segment scene sever motion layer experiment result demonstr method can success segment scene contain object larg interfram motion even signific interfram scale pose chang furthermor compar previous method invent will modifi version method much faster robust

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