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New design orientated digitising technology integrating the conceptual design into the design engineering

Nouvelles stratégies de digitalisation 3D à partir de lignes caractéristiques et de contours
: Westkämper, E.; Roth-Koch, S.; Stotz, M.

Roth-Koch, S. ; Harbour Conferences, Dinard:
3D Modelling 2003 - NUM 3D : The 8th International Rendezvous for 3D digitisation and modelling professionals. Proceedings books. 23-24 April 2003, Paris
Dinard, 2003
International Rendez-vous for 3D Digitisation and Modelling Professionals (3D Modelling) <8, 2003, Paris>
Fraunhofer IPA ()
feature scanning; geometric modeling; product development; optischer Scanner; geometrische Modellierung; Formleitlinie; 3D-measurement; 3D-Messgerät; Produktentwicklung; Bildverarbeitung

The paper describes a 3-D measuring system for the acquisition of characteristic shape features. It enables an adapted digitising strategy: acquirement of characterising elements - generating a surface topology - surface description. The procedure works on light contours in 2-D images. These light contours assign feature lines to surface characteristics which occur under varying lighting. Because of the given connection of 2-D image data with 3-D surface co-ordinates the feature lines could be founde in the point cloud. Thus, the innovation of the strategy is to be seen in the simultaneously processing of 2-D and 3-D data which allows the context-sensitive acquirement of information in physical models.
The range of application of the system will cover styling, concept modelling, product development, rapid prototyping and reverse engineering technologies.