Ruling line detection and removal

Ergina Kavallieratou; Daniel Lopresti; Jin Chen

doi:10.1117/12.873311

24 January 2011 Ruling line detection and removal

Ergina Kavallieratou, Daniel Lopresti, Jin Chen

Proceedings Volume 7874, Document Recognition and Retrieval XVIII; 78740V (2011) https://doi.org/10.1117/12.873311
Event: IS&T/SPIE Electronic Imaging, 2011, San Francisco Airport, California, United States

Abstract

In this paper we present a procedure for removing ruling lines from a handwritten document image that does not require any preprocessing or postprocessing tasks and it does not break existing characters. We take advantage of common ruling line properties such as uniform width, predictable spacing, position vs. text, etc. The deletion procedure of the detected ruling line is based on the fact that the coordinates of three collinear points have a determinant equal to zero. The system is evaluated on synthetic page images in five different languages and is compared to a previous methodology.

Citation Download Citation

Ergina Kavallieratou, Daniel Lopresti, and Jin Chen "Ruling line detection and removal", Proc. SPIE 7874, Document Recognition and Retrieval XVIII, 78740V (24 January 2011); https://doi.org/10.1117/12.873311

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