PT Unknown
AU P. Wang
   V. Eglin
   C. Garcia
   C. Largeron
   Josep Llados
   Alicia Fornes
TI Représentation par graphe de mots manuscrits dans les images pour la recherche par similarité
BT Colloque International Francophone sur l'Écrit et le Document
PY 2014
BP 233
EP 248
DE word spotting; graph-based representation; shape context description; graph edit distance; DTW; block merging; query by example
AB Effective information retrieval on handwritten document images has always beena challenging task. In this paper, we propose a novel handwritten word spotting approach based on graph representation. The presented model comprises both topological and morphological signatures of handwriting. Skeleton-based graphs with the Shape Context labeled vertexes are established for connected components. Each word image is represented as a sequence of graphs. In order to be robust to the handwriting variations, an exhaustive merging process based on DTW alignment results introduced in the similarity measure between word images. With respect to the computation complexity, an approximate graph edit distance approach using bipartite matching is employed for graph matching. The experiments on the George Washington dataset and the marriage records from the Barcelona Cathedral dataset demonstrate that the proposed approach outperforms the state-of-the-art structural methods.
ER