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Civil-Comp Proceedings
ISSN 1759-3433 CCP: 30
DEVELOPMENTS IN COMPUTER AIDED DESIGN AND MODELLING FOR CIVIL ENGINEERING Edited by: B.H.V. Topping
Paper I.2
Computer Interpretion of Process and Instrumentation Drawings C. Howie, J. Kunz, T. Binford, T. Chen and K.H. Law
Stanford University, Stanford, USA C. Howie, J. Kunz, T. Binford, T. Chen, K.H. Law, "Computer Interpretion of Process and Instrumentation Drawings", in B.H.V. Topping, (Editor), "Developments in Computer Aided Design and Modelling for Civil Engineering", Civil-Comp Press, Edinburgh, UK, pp 13-20, 1995. doi:10.4203/ccp.30.1.2
Abstract
This paper describes a proof-of-concept computer system
capable of interpreting graphical component connectivity
in Process and Instrumentation Drawings (P&IDs). The
input drawing is a CAD file in DXF format. Drawing
features are considered to be pipes or symbolic entities
with geometrically constrained attachment ports. A low-level
image processing front-end is currently being developed
to support the interpretation of drawings in vector
format from scanned paper P&IDs. A hierarchical data
structure is used to enable recognition of components in
collinear and circuit complexes.
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