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Journal of Electronic Imaging

Robust skew estimation using straight lines in document images
Author(s): Hyung Il Koo; Nam Ik Cho
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Paper Abstract

A skew-estimation method using straight lines in document images is presented. Unlike conventional approaches exploiting the properties of text, we formulate the skew-estimation problem as an estimation task using straight lines in images and focus on robust and accurate line detection. To be precise, we adopt a block-based edge detector followed by a progressive line detector to take clues from a variety of sources such as text lines, boundaries of figures/tables, vertical/horizontal separators, and boundaries of textblocks. Extensive experiments on the datasets of skewed images and competition results reveal that the proposed method works robustly and yields accurate skew-estimation results.

Paper Details

Date Published: 9 June 2016
PDF: 12 pages
J. Electron. Imag. 25(3) 033014 doi: 10.1117/1.JEI.25.3.033014
Published in: Journal of Electronic Imaging Volume 25, Issue 3
Show Author Affiliations
Hyung Il Koo, Ajou Univ. (Republic of Korea)
Nam Ik Cho, Seoul National Univ. (Korea, Republic of)

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