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- W172584396 abstract "We propose a method to label roads in aerial images and extract a topologically correct road network. Three factors make road extraction difficult: (i) high intra-class variability due to clutter like cars, markings, shadows on the roads; (ii) low inter-class variability, because some non-road structures are made of similar materials; and (iii) most importantly, a complex structural prior: roads form a connected network of thin segments, with slowly changing width and curvature, often bordered by buildings, etc. We model this rich, but complicated contextual information at two levels. Locally, the context and layout of roads is learned implicitly, by including multi-scale appearance information from a large neighborhood in the per-pixel classifier. Globally, the network structure is enforced explicitly: we first detect promising stretches of road via shortest-path search on the per-pixel evidence, and then select pixels on an optimal subset of these paths by energy minimization in a CRF, where each putative path forms a higher-order clique. The model outperforms several baselines on two challenging data sets, both in terms of precision/recall and w.r.t. topological correctness." @default.
- W172584396 created "2016-06-24" @default.
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- W172584396 date "2014-01-01" @default.
- W172584396 modified "2023-10-05" @default.
- W172584396 title "Mind the Gap: Modeling Local and Global Context in (Road) Networks" @default.
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- W172584396 doi "https://doi.org/10.1007/978-3-319-11752-2_17" @default.
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