A Dynamic-Rule-Based Framework of Engineering Drawing Recognition and Interpretation System

This paper introduces the idea that recognition and interpretation of engineering drawings should be two interwoven phases, with each providing feedback to another, and applies this idea to a dynamic-rule-based method. Recognition rules with attributes are obtained by an automatic object feature extraction procedure, and stored in rule database. During the recognition phase, rules are firstly selected according to two attributes, domain and priority. Then the thresholds of the rules are adjusted automatically to obtain better match results and their priorities are modified dynamically to improve recognition efficiency. Especially, the interpretation phase based on the recognition is also valued in validating and rectifying the recognition result automatically and efficiently. This approach was implemented in a system for recognizing and interpreting architectural structure drawings, and has shown to embody good self-adaptability to various drafting conventions.

[1]  Karl Tombre,et al.  Graphics Recognition Algorithms and Systems , 1997, Lecture Notes in Computer Science.

[2]  S. S. Pande,et al.  Intelligent interpretation of CADD drawings , 1999, Comput. Graph..

[3]  George-Christopher Vosniakos,et al.  Recognizing D shape features using a neural network and heuristics , 1997, Comput. Aided Des..

[4]  James R. Gattiker,et al.  A System for Interpretation of Line Drawings , 1990, IEEE Trans. Pattern Anal. Mach. Intell..

[5]  Ashok Samal,et al.  A system for recognizing a large class of engineering drawings , 1997, IEEE Trans. Pattern Anal. Mach. Intell..

[6]  Bart Lamiroy,et al.  Graphics recognition - from re-engineering to retrieval , 2003, Seventh International Conference on Document Analysis and Recognition, 2003. Proceedings..

[7]  Fuhua Lin,et al.  Syntactic interpretation approaches for innovative engineering drawings conversion support system , 1998 .

[8]  Josep Lladós,et al.  A String Based Method to Recognize Symbols and Structural Textures in Architectural Plans , 1997, GREC.

[9]  Jaehwa Park,et al.  Main Wall Recognition of Architectural Drawings Using Dimension Extension Line , 2003, GREC.

[10]  Qiping Shen,et al.  Automatic acquisition of rules for 3D reconstruction of construction components , 2004 .

[11]  Dov Dori.  Preprocessing of engineering drawings for 3D reconstruction , 1990, Systems Integration '90. Proceedings of the First International Conference on Systems Integration.