Document representation refinement for precise region description

Clausner, C; Pletschacher, S; Antonacopoulos, A

Abstract

Precise description of layout entities (content regions on a page) is crucial for all but the most trivial document analysis and recognition applications. The output of layout analysis methods and state-of-the-art OCR systems varies significantly, from bounding boxes (e.g. Tesseract) to stacks of text line rectangles (e.g. ABBYY FineReader). There is a clear need for a consistent and accurate representation of regions (e.g. text paragraphs, graphics entities etc.) for further processing, correction and performance evaluation (comparison of segmentation results with ground truth regions). This paper describes a method for refinement of document representations by fitting polygons around lower-level layout objects (such as text lines, words and glyphs) in a systematic way that reconstructs region outlines and preserves the fine details of complex layouts. Experimental results on a standard dataset demonstrate the validity and usefulness of the proposed approach.

• Presentation Conference Type: Conference Paper (published)
• Conference Name: DATeCH 2014: Digital Access to Textual Cultural Heritage 2014
• Start Date: May 19, 2014
• End Date: May 20, 2014
• Publication Date: May 19, 2014
• Deposit Date: Jan 28, 2015
• Book Title: DATeCH '14: Proceedings of the First International Conference on Digital Access to Textual Cultural Heritage
• ISBN: 9781450325882
• DOI: https://doi.org/10.1145/2595188.2595198
• Publisher URL: http://dx.doi.org/10.1145/2595188.2595198
• Related Public URLs: http://dl.acm.org/dl.cfm?CFID=473908569&CFTOKEN=68594310