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Document analysis of PDF files: methods, results and implications

Lovegrove, William S.; Brailsford, David F.


William S. Lovegrove

David F. Brailsford


David F. Brailsford

Richard K. Furuta


A strategy for document analysis is presented which uses Portable Document Format (PDF the underlying file structure for Adobe Acrobat software) as its starting point. This strategy examines the appearance and geometric position of text and image blocks distributed over an entire document. A blackboard system is used to tag the blocks as a first stage in deducing the fundamental relationships existing between them. PDF is shown to be a useful intermediate stage in the bottom-up analysis of document structure. Its information on line spacing and font usage gives important clues in bridging the semantic gap between the scanned bitmap page and its fully analysed, block-structured form. Analysis of PDF can yield not only accurate page decomposition but also sufficient document information for the later stages of structural analysis and document understanding.


Lovegrove, W. S., & Brailsford, D. F. (1995). Document analysis of PDF files: methods, results and implications

Journal Article Type Article
Publication Date Jan 1, 1995
Deposit Date Nov 14, 2005
Publicly Available Date Oct 9, 2007
Journal Electronic Publishing -- Origination, Dissemination and Design
Peer Reviewed Peer Reviewed
Volume 8
Issue 3
Keywords Document analysis, Document understanding, Blackboard methods, Geometric structure, Logical structure, PDF, PostScript
Public URL
Additional Information Copyright transferred from John Wiley to Univ.of Nottingham in 1998.


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