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Detection of Dimension Sets in Engineering Drawings
August 1994 (vol. 16 no. 8)
pp. 848-855

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.

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Index Terms:
document image processing; image segmentation; image recognition; engineering computing; dimension sets; engineering drawings; ANSI drafting standards; rule-based text/graphics separation algorithm; model-based procedure; arrowhead tracking; search methods; leaders; tails; segmented images; text blocks; feature control frames
Citation:
C.P. Lai, R. Katsuri, "Detection of Dimension Sets in Engineering Drawings," IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 16, no. 8, pp. 848-855, Aug. 1994, doi:10.1109/34.308483
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