00652nas a2200169 4500008004100000020001400041245010700055210006900162260001200231300001400243490000700257100001900264700001600283700001700299700002100316856014500337 2009 eng d a0031-320300aA higher-order active contour model of a 'gas of circles' and its application to tree crown extraction0 ahigherorder active contour model of a gas of circles and its app c2009/// a699 - 7090 v421 aHorvath, Peter1 aJermyn, Ian1 aKato, Zoltan1 aZerubia, Josiane uhttps://www.inf.u-szeged.hu/publication/a-higher-order-active-contour-model-of-a-gas-of-circles-and-its-application-to-tree-crown-extraction00519nas a2200109 4500008004100000245007600041210006900117260008200186490000800268100001900276856011400295 2007 eng d00aThe 'Gas of Circles' Model and its Application to Tree Crown Extraction0 aGas of Circles Model and its Application to Tree Crown Extractio bUniversity of Nice - Sophia Antipolis and University of SzegedcDecember 20070 vPhD1 aHorvath, Peter uhttps://www.inf.u-szeged.hu/publication/the-gas-of-circles-model-and-its-application-to-tree-crown-extraction00590nas a2200145 4500008003900000245008600039210006900125260002500194100001900219700001600238700002000254700002300274700002300297856012400320 2007 d00aA 'gas of Circles' Phase Field Model and its Application to Tree Crown Extraction0 agas of Circles Phase Field Model and its Application to Tree Cro aPoznan, Polandc20071 aHorvath, Peter1 aJermyn, Ian1 aDomanski, Marek1 aStasinski, Ryszard1 aBartkowiak, Maciej uhttps://www.inf.u-szeged.hu/publication/a-gas-of-circles-phase-field-model-and-its-application-to-tree-crown-extraction00715nas a2200169 4500008004100000245009900041210007600140260007300216300001400289100001900303700001600322700001700338700002100355700002000376700002000396856012900416 2007 eng d00aKör alakú objektumok szegmentálása magasabb rendű aktív kontúr modellek segítségével0 aKör alakú objektumok szegmentálása magasabb rendű aktív kontúr m aDebrecenbKépfeldolgozók és Alakfelismerők TársaságacJan 2007 a133 - 1401 aHorvath, Peter1 aJermyn, Ian1 aKato, Zoltan1 aZerubia, Josiane1 aFazekas, Attila1 aHajdú, András uhttps://www.inf.u-szeged.hu/publication/kor-alaku-objektumok-szegmentalasa-magasabb-rendu-aktiv-kontur-modellek-segitsegevel00653nas a2200157 4500008003900000245010900039210006900148260002900217300001200246490000900258100001900267700002200286700001700308700002100325856014900346 2007 d00aA Multispectral Data Model for Higher-Order Active Contours and its Application to Tree Crown Extraction0 aMultispectral Data Model for HigherOrder Active Contours and its aDelft, Netherlandsc2007 a200-2110 v46781 aHorvath, Peter1 aPhilips, Wilfried1 aPopescu, Dan1 aScheunders, Paul uhttps://www.inf.u-szeged.hu/publication/a-multispectral-data-model-for-higher-order-active-contours-and-its-application-to-tree-crown-extraction00652nas a2200169 4500008003900000245009500039210006900134260002600203300001200229490000900241100001900250700001600269700002600285700001900311700001900330856013300349 2007 d00aA New Phase Field Model of a 'gas of Circles' for Tree Crown Extraction from Aerial Images0 aNew Phase Field Model of a gas of Circles for Tree Crown Extract aVienna, Austriac2007 a702-7090 v46731 aHorvath, Peter1 aJermyn, Ian1 aKropatsch, Walter, G.1 aKampel, Martin1 aHanbury, Allan uhttps://www.inf.u-szeged.hu/publication/a-new-phase-field-model-of-a-gas-of-circles-for-tree-crown-extraction-from-aerial-images01532nas a2200169 4500008004100000245005900041210005600100260001800156300001400174520098900188100001901177700001601196700001701212700002101229700001301250856009901263 2006 eng d00aA higher-order active contour model for tree detection0 ahigherorder active contour model for tree detection bIEEEc2006/// a130 - 1333 a
We present a model of a 'gas of circles', the ensemble of regions in the image domain consisting of an unknown number of circles with approximately fixed radius and short range repulsive interactions, and apply it to the extraction of tree crowns from aerial images. The method uses the recently introduced 'higher order active contours' (HOACs), which incorporate long-range interactions between contour points, and thereby include prior geometric information without using a template shape. This makes them ideal when looking for multiple instances of an entity in an image. We study an existing HOAC model for networks, and show via a stability calculation that circles stable to perturbations are possible for constrained parameter sets. Combining this prior energy with a data term, we show results on aerial imagery that demonstrate the effectiveness of the method and the need for prior geometric knowledge. The model has many other potential applications. © 2006 IEEE.
1 aHorvath, Peter1 aJermyn, Ian1 aKato, Zoltan1 aZerubia, Josiane1 aTang, YY uhttps://www.inf.u-szeged.hu/publication/a-higher-order-active-contour-model-for-tree-detection01535nas a2200169 4500008003900000245005900039210005600098260003300154300001400187490000600201520098600207100001901193700001601212700001701228700002101245856009901266 2006 d00aA Higher-Order Active Contour Model for Tree Detection0 aHigherOrder Active Contour Model for Tree Detection aHong Kong, ChinabIAPRc2006 a130–1330 v23 aWe present a model of a 'gas of circles', the ensemble of regions in the image domain consisting of an unknown number of circles with approximately fixed radius and short range repulsive interactions, and apply it to the extraction of tree crowns from aerial images. The method uses the recently introduced 'higher order active contours' (HOACs), which incorporate long-range interactions between contour points, and thereby include prior geometric information without using a template shape. This makes them ideal when looking for multiple instances of an entity in an image. We study an existing HOAC model for networks, and show via a stability calculation that circles stable to perturbations are possible for constrained parameter sets. Combining this prior energy with a data term, we show results on aerial imagery that demonstrate the effectiveness of the method and the need for prior geometric knowledge. The model has many other potential applications.
1 aHorvath, Peter1 aJermyn, Ian1 aKato, Zoltan1 aZerubia, Josiane uhttps://www.inf.u-szeged.hu/publication/a-higher-order-active-contour-model-for-tree-detection00583nas a2200133 4500008004100000245010700041210006900148260001200217100001900229700001600248700001700264700002100281856014700302 2006 eng d00aA Higher-Order Active Contour Model of a `Gas of Circles' and its Application to Tree Crown Extraction0 aHigherOrder Active Contour Model of a Gas of Circles and its App c2006///1 aHorvath, Peter1 aJermyn, Ian1 aKato, Zoltan1 aZerubia, Josiane uhttps://www.inf.u-szeged.hu/publication/a-higher-order-active-contour-model-of-a-gas-of-circles-and-its-application-to-tree-crown-extraction-000722nas a2200169 4500008004100000245011200041210006900153260005900222300001400281100001900295700001600314700001700330700002100347700001600368700001800384856015000402 2006 eng d00aAn Improved `Gas of Circles' Higher-Order Active Contour Model and its Application to Tree Crown Extraction0 aImproved Gas of Circles HigherOrder Active Contour Model and its aBerlin; Heidelberg; New YorkbSpringer Verlagc2006/// a152 - 1611 aHorvath, Peter1 aJermyn, Ian1 aKato, Zoltan1 aZerubia, Josiane1 aKalra, Prem1 aPeleg, Shmuel uhttps://www.inf.u-szeged.hu/publication/an-improved-gas-of-circles-higher-order-active-contour-model-and-its-application-to-tree-crown-extraction00628nas a2200193 4500008004100000245005100041210005100092260002500143300001400168100001900182700002300201700001600224700002100240700001700261700002500278700002100303700001900324856009100343 2005 eng d00aShape Moments for Region Based Active Contours0 aShape Moments for Region Based Active Contours aViennabOCGc2005/// a187 - 1941 aHorvath, Peter1 aBhattacharya, Avik1 aJermyn, Ian1 aZerubia, Josiane1 aKato, Zoltan1 aChetverikov, Dmitrij1 aCzúni, László1 aVincze, Markus uhttps://www.inf.u-szeged.hu/publication/shape-moments-for-region-based-active-contours00490nas a2200121 4500008004100000245007000041210006900111260002900180300001400209100001900223700001700242856010900259 2004 eng d00aColor, Texture and Motion Segmentation Using Gradient Vector Flow0 aColor Texture and Motion Segmentation Using Gradient Vector Flow aMiskolctapolcacJan 2004 a131 - 1371 aHorvath, Peter1 aKato, Zoltan uhttps://www.inf.u-szeged.hu/publication/color-texture-and-motion-segmentation-using-gradient-vector-flow00483nas a2200121 4500008004100000245006700041210006700108260002900175300001400204100001900218700001700237856010700254 2004 eng d00aOptical Flow Computation Using an Energy Minimization Approach0 aOptical Flow Computation Using an Energy Minimization Approach aMiskolctapolcacJan 2004 a125 - 1301 aHorvath, Peter1 aKato, Zoltan uhttps://www.inf.u-szeged.hu/publication/optical-flow-computation-using-an-energy-minimization-approach