Transforming paper documents into XML format with WISDOM
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The innovative aspects described in the paper are: the preprocessing algorithm, the adaptive page segmentation, the acquisition of block classification rules using techniques from machine learning, the layout analysis based on general layout principles, and a method that uses document layout information for conversion to HTML/XML formats.Abstract:
The transformation of scanned paper documents to a form suitable for an Internet browser is a complex process that requires solutions to several problems. The application of an OCR to some parts of the document image is only one of the problems. In fact, the generation of documents in HTML format is easier when the layout structure of a page has been extracted by means of a document analysis process. The adoption of an XML format is even better, since it can facilitate the retrieval of documents in the Web. Nevertheless, an effective transformation of paper documents into this format requires further processing steps, namely document image classification and understanding. WISDOM++ is a document processing system that operates in five steps: document analysis, document classification, document understanding, text recognition with an OCR, and transformation into HTML/XML format. The innovative aspects described in the paper are: the preprocessing algorithm, the adaptive page segmentation, the acquisition of block classification rules using techniques from machine learning, the layout analysis based on general layout principles, and a method that uses document layout information for conversion to HTML/XML formats. A benchmarking of the system components implementing these innovative aspects is reported.read more
Citations
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Book ChapterDOI
XML and Knowledge Technologies for Semantic-Based Indexing of Paper Documents
TL;DR: This paper proposes the application of knowledge technologies to many document processing steps, namely rule-based systems for semantic indexing of documents and the extraction of the necessary knowledge by means of machine learning techniques.
Patent
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Proceedings ArticleDOI
Relational learning techniques for document image understanding: comparing statistical and logical approaches
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