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Proceedings Paper

Extraction of text boxes from engineering drawings
Author(s): Ian Chai; Dov Dori
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Paper Abstract

Textboxes are minimum size rectangles enclosing blocks of text in engineering drawings. Their separation from the graphics surrounding them is a first step in character recognition, and is a part of the Machine Drawing Understanding System, currently under development. Textbox extraction is preceded by orthogonal zig-zag vectorization, arc segmentation, and arrowhead recognition. It is done by clustering the remaining short bars that are located close to each other through a region growing process. Further refinements follow which improve the ability of the process to outline the real textboxes.

Paper Details

Date Published: 1 August 1992
PDF: 12 pages
Proc. SPIE 1661, Machine Vision Applications in Character Recognition and Industrial Inspection, (1 August 1992); doi: 10.1117/12.130272
Show Author Affiliations
Ian Chai, Univ. of Kansas (United States)
Dov Dori, Technion/Israel Institute of Technology (Israel)


Published in SPIE Proceedings Vol. 1661:
Machine Vision Applications in Character Recognition and Industrial Inspection
Donald P. D'Amato; Wolf-Ekkehard Blanz; Byron E. Dom; Sargur N. Srihari, Editor(s)

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