Extraction of text boxes from engineering drawings

Ian Chai; Dov Dori

doi:10.1117/12.130272

1 August 1992 Extraction of text boxes from engineering drawings

Ian Chai, Dov Dori

Proceedings Volume 1661, Machine Vision Applications in Character Recognition and Industrial Inspection; (1992) https://doi.org/10.1117/12.130272
Event: SPIE/IS&T 1992 Symposium on Electronic Imaging: Science and Technology, 1992, San Jose, CA, United States

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.

Citation Download Citation

Ian Chai and Dov Dori "Extraction of text boxes from engineering drawings", Proc. SPIE 1661, Machine Vision Applications in Character Recognition and Industrial Inspection, (1 August 1992); https://doi.org/10.1117/12.130272

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