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TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:America/New_York EDT END:DAYLIGHT BEGIN:DAYLIGHT DTSTART:20330313T030000 RDATE:20331106T010000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:America/New_York EDT END:DAYLIGHT BEGIN:DAYLIGHT DTSTART:20340312T030000 RDATE:20341105T010000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:America/New_York EDT END:DAYLIGHT BEGIN:DAYLIGHT DTSTART:20350311T030000 RDATE:20351104T010000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:America/New_York EDT END:DAYLIGHT BEGIN:DAYLIGHT DTSTART:20360309T030000 RDATE:20361102T010000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:America/New_York EDT END:DAYLIGHT BEGIN:DAYLIGHT DTSTART:20370308T030000 RDATE:20371101T010000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:America/New_York EDT END:DAYLIGHT END:VTIMEZONE BEGIN:VEVENT UID:26848e28131d9d92397089caa03a15c2 CATEGORIES:Human and computer vision series:Fall 2008 CREATED:20151203T141541 SUMMARY:Contour Grouping Based on Contour-Skeleton Duality LOCATION: Department of Computer and Information Services\, Temple University DESCRIPTION:In this talk we present a method for grouping relevant object contours in e dge maps by taking advantage of contour-skeleton duality. Regularizing cont ours and skeletons simultaneously allows us to combine both low level perce ptual constraints as well as higher level model constraints in a very effec tive way. The models are represented as a set of skeleton paths. Skeletons are treated as trajectories of an imaginary virtual robot in a discrete spa ce of "symmetric points" obtained from pairs of edge segments. Boundaries a re then defined as the maps obtained by grouping the associated pairs of ed ge segments along the trajectories. Casting the grouping problem in this ma nner makes it similar to the problem of Simultaneous Localization and Mappi ng (SLAM). Hence we adapt the state-of-the-art probabilistic framework name ly Rao-Blackwellized particle filtering that has been successfully applied to SLAM to maximize the joint posterior over skeletons and contours. The ex perimental results demonstrate the robustness of our approach.\n \nThis is a joint work with Nageh Adluru, a graduate student at Temple University.\n X-ALT-DESC;FMTTYPE=text/html:
In this talk we present a method for grouping relevant object
contours in edge maps by taking advantage of contour-skeleton duality. Reg
ularizing contours and skeletons simultaneously allows us to combine both l
ow level perceptual constraints as well as higher level model constraints i
n a very effective way. The models are represented as a set of skeleton pat
hs. Skeletons are treated as trajectories of an imaginary virtual robot in
a discrete space of "symmetric points" obtained from pairs of edge segments
. Boundaries are then defined as the maps obtained by grouping the associat
ed pairs of edge segments along the trajectories. Casting the grouping prob
lem in this manner makes it similar to the problem of Simultaneous Localiza
tion and Mapping (SLAM). Hence we adapt the state-of-the-art probabilistic
framework namely Rao-Blackwellized particle filtering that has been success
fully applied to SLAM to maximize the joint posterior over skeletons and co
ntours. The experimental results demonstrate the robustness of our approach
.
This is a joint work with Nageh Adluru, a graduate student at <
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