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Tuesday, December 8 • 19:00 - 23:59
Planar Ultrametrics for Image Segmentation

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We study the problem of hierarchical clustering on planar graphs. We formulate this in terms of finding the closest ultrametric to a specified set of distances and solve it using an LP relaxation that leverages minimum cost perfect matching as a subroutine to efficiently explore the space of planar partitions. We apply our algorithm to the problem of hierarchical image segmentation.


Tuesday December 8, 2015 19:00 - 23:59
210 C #44