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- W1538593755 abstract "In recent work, we presented a framework for many-to-many matching of multi-scale feature hierarchies, in which features and their relations were captured in a vertex-labeled, edge-weighted directed graph. The algorithm was based on a metric-tree representation of labeled graphs and their metric embedding into normed vector spaces, using the embedding algorithm of Matousek [13]. However, the method was limited by the fact that two graphs to be matched were typically embedded into vector spaces with different dimensionality. Before the embeddings could be matched, a dimensionality reduction technique (PCA) was required, which was both costly and prone to error. In this paper, we introduce a more efficient embedding procedure based on a spherical coding of directed graphs. The advantage of this novel embedding technique is that it prescribes a single vector space into which both graphs are embedded. This reduces the problem of directed graph matching to the problem of geometric point matching, for which efficient many-to-many matching algorithms exist, such as the Earth Mover’s Distance. We apply the approach to the problem of multi-scale, view-based object recognition, in which an image is decomposed into a set of blobs and ridges with automatic scale selection." @default.
- W1538593755 created "2016-06-24" @default.
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- W1538593755 date "2004-01-01" @default.
- W1538593755 modified "2023-10-16" @default.
- W1538593755 title "Many-to-Many Feature Matching Using Spherical Coding of Directed Graphs" @default.
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- W1538593755 doi "https://doi.org/10.1007/978-3-540-24670-1_25" @default.
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