3D Reconstruction of Paper Based Assembly Drawings: State of the Art and Approach

  • El-Fathi El-Mejbri
  • Hans Grabowski
  • Harald Kunze
  • Ralf-Stefan Lossack
  • Arno Michelis
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2390)


Engineering solutions are generally documented in assembly and part drawings and bill of materials. A great benefit, qualitatively and commercially, can be achieved if these paper based storages can be transformed into digital information archives. The process of this transformation is called reconstruction. The reconstruction process of paper based assembly drawings consists of four steps: digitization; vectorization/interpretation; 3D reconstruction of the parts and the 3D reconstruction of the assembly.

This paper evaluates existing commercial systems worldwide for interpretation of paper based mechanical engineering drawings. For a complete reconstruction process a 3D reconstruction is needed. This functionality is already supported by some CAD systems to a certain extent, but it still remains a major topic of research work. One CAD system which converts 2D CAD models into 3D CAD models is presented. Finally, after the reconstruction of the parts the whole assembly can be reconstructed. Until now, no system for the automatic reconstruction of assemblies is available. In our paper we present a general approach for automatic reconstruction of 3D assembly model data by interpretation of mechanical engineering 2D assembly drawings, their part drawings, and the bill of materials.


Vector Data Reconstruction Process Line Type Pixel Data Engineering Drawing 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2002

Authors and Affiliations

  • El-Fathi El-Mejbri
    • 1
  • Hans Grabowski
    • 1
  • Harald Kunze
    • 1
  • Ralf-Stefan Lossack
    • 1
  • Arno Michelis
    • 1
  1. 1.Institute for Applied Computer Science in Mechanical EngineeringUniversity of KarlsruheKarlsruheGermany

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