3D measurement for rapid prototyping

Peter Albrecht; Tilo Lilienblum; Gerd Sommerkorn; Bernd Michaelis

doi:10.1117/12.248598

26 August 1996 3D measurement for rapid prototyping

Peter Albrecht, Tilo Lilienblum, Gerd Sommerkorn, Bernd Michaelis

Proceedings Volume 2787, Rapid Prototyping; (1996) https://doi.org/10.1117/12.248598
Event: Lasers, Optics, and Vision for Productivity in Manufacturing I, 1996, Besancon, France

Abstract

Optical 3-D measurement is an interesting approach for rapid prototyping. On one hand it's necessary to get the 3-D data of an object and on the other hand it's necessary to check the manufactured object (quality checking). Optical 3-D measurement can realize both. Classical 3-D measurement procedures based on photogrammetry cause systematic errors at strongly curved surfaces or steps in surfaces. One possibility to reduce these errors is to calculate the 3-D coordinates from several successively taken images. Thus it's possible to get higher spatial resolution and to reduce the systematic errors at 'problem surfaces.' Another possibility is to process the measurement values by neural networks. A modified associative memory smoothes and corrects the calculated 3-D coordinates using a-priori knowledge about the measurement object.

Citation Download Citation

Peter Albrecht, Tilo Lilienblum, Gerd Sommerkorn, and Bernd Michaelis "3D measurement for rapid prototyping", Proc. SPIE 2787, Rapid Prototyping, (26 August 1996); https://doi.org/10.1117/12.248598

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