Medium-independent table detection

Jianying Hu; Ramanujan S. Kashi; Daniel P. Lopresti; Gordon Wilfong

doi:10.1117/12.373506

22 December 1999 Medium-independent table detection

Jianying Hu, Ramanujan S. Kashi, Daniel P. Lopresti, Gordon Wilfong

Proceedings Volume 3967, Document Recognition and Retrieval VII; (1999) https://doi.org/10.1117/12.373506
Event: Electronic Imaging, 2000, San Jose, CA, United States

Abstract

An important step towards the goal of table understanding is a method for reliable table detection. This paper describes a general solution for detecting tables based on computing an optimal partitioning of a document into some number of tables. A dynamic programming algorithm is given to solve the resulting optimization problem. This high-level framework is independent of any particular table quality measure and independent of the document medium. Moreover, it does not rely on the presence of ruling lines or other table delimiters. We also present table quality measures based on white space correlation and vertical connected component analysis. These measures can be applied equally well to ASCII text and scanned images. We report on some preliminary experiments using this method to detect tables in both ASCII text and scanned images, yielding promising results. We present detailed evaluation of these results using three different criteria which by themselves pose interesting research questions.

Citation Download Citation

Jianying Hu, Ramanujan S. Kashi, Daniel P. Lopresti, and Gordon Wilfong "Medium-independent table detection", Proc. SPIE 3967, Document Recognition and Retrieval VII, (22 December 1999); https://doi.org/10.1117/12.373506

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