Detection of dimension sets in engineering drawings

Author

Lai, Chan Pyng ; Kasturi, Rangachar

Author_Institution

Dept. of Electr. & Comput. Eng., Pennsylvania State Univ., University Park, PA, USA

Volume

16

Issue

8

fYear

1994

fDate

8/1/1994 12:00:00 AM

Firstpage

848

Lastpage

855

Abstract

This correspondence presents a system for detecting dimension sets in engineering drawings that are drawn to ANSI drafting standards. A new rule-based text/graphics separation algorithm and a model-based procedure for detecting arrowheads in any orientation have been developed. Arrowhead tracking and search methods are used to extract leaders, tails, and witness lines from segmented images containing only graphics. Text blocks and feature control frames extracted from the segmented images are than associated with their corresponding leaders to obtain complete dimension sets. Experimental results are presented

Keywords

document image processing; engineering computing; image recognition; image segmentation; ANSI drafting standards; arrowhead tracking; dimension sets; engineering drawings; feature control frames; leaders; model-based procedure; rule-based text/graphics separation algorithm; search methods; segmented images; tails; text blocks; ANSI standards; Computer aided manufacturing; Design automation; Engineering drawings; Graphics; Image analysis; Image segmentation; Pattern recognition; Tail; Technical drawing;

fLanguage

English

Journal_Title

Pattern Analysis and Machine Intelligence, IEEE Transactions on

Publisher

ieee

ISSN

0162-8828

Type

jour

DOI

10.1109/34.308483

Filename

308483