Abstract
Extracting bars (straight line segments) from a binary image is a first processing step in a system for understanding engineering drawings as well as other applications such as robotics [1]. A novel algorithm — the Orthogonal Zig-Zag (OZZ) has been developed and implemented. The underlying idea of OZZ is selective processing, or focus of attention. The binary input image is scanned intermittently and rather sparsely, but nevertheless all the necessary information needed to detect bars is extracted. Black pixels constitute a small fraction of the input drawing. Of these pixels, OZZ processes only a small fraction, resulting in both a dramatic reduction in both space and time compared to HT.
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© 1992 Springer Science+Business Media New York
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Chai, I., Dori, D. (1992). Orthogonal Zig-Zag: An Efficient Method for Extracting Straight Lines from Engineering Drawings. In: Arcelli, C., Cordella, L.P., di Baja, G.S. (eds) Visual Form. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-0715-8_14
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DOI: https://doi.org/10.1007/978-1-4899-0715-8_14
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