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Synthetically generated semantic codebook for Bag-of-Visual-Words based word spotting
David Aldavert, & Marçal Rusiñol. (2018). Synthetically generated semantic codebook for Bag-of-Visual-Words based word spotting. In 13th IAPR International Workshop on Document Analysis Systems (pp. 223–228).
Word-spotting methods based on the Bag-ofVisual-Words framework have demonstrated a good retrieval performance even when used in a completely unsupervised manner. Although unsupervised approaches are suitable for
large document collections due to the cost of acquiring labeled data, these methods also present some drawbacks. For instance, having to train a suitable “codebook” for a certain dataset has a high computational cost. Therefore, in
this paper we present a database agnostic codebook which is trained from synthetic data. The aim of the proposed approach is to generate a codebook where the only information required is the type of script used in the document. The use of synthetic data also allows to easily incorporate semantic
information in the codebook generation. So, the proposed method is able to determine which set of codewords have a semantic representation of the descriptor feature space. Experimental results show that the resulting codebook attains a state-of-the-art performance while having a more compact representation.
Synthetically generated semantic codebook for Bag-of-Visual-Words based word spottingDavid AldavertMarçal Rusiñolinfo:doi/10.1109/DAS.2018.25openurl:?ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2F158.109.8.37%2F&genre=proceeding&title=Synthetically%20generated%20semantic%20codebook%20for%20Bag-of-Visual-Words%20based%20word%20spotting&date=2018&spage=223&epage=228&aulast=David%20Aldavert&au=Mar%C3%A7al%20Rusi%C3%B1ol&id=info%3Adoi%2F10.1109%2FDAS.2018.25&sid=refbase%3ACVCDavid Aldavert, & Marçal Rusiñol. (2018). Synthetically generated semantic codebook for Bag-of-Visual-Words based word spotting. In 13th IAPR International Workshop on Document Analysis Systems (pp. 223-228).2018ConferencePapertextWord SpottingBag of Visual WordsSynthetic CodebookSemantic Informationfile:http://158.109.8.37/files/AlR2018b.pdf13th IAPR International Workshop on Document Analysis Systems2018223228