A three-dimensional imaging system for industrial applications with improved flexibility and robustness

Publisher Website
Google Scholar
Abstract
Procedures developed to enhance the flexibility and the robustness of an optical whole-field profilometer are presented. The system is based on the projection of structured light and on active triangulation. In order to comply with a sufficiently wide typology of targets, three different techniques to perform light coding have been integrated on the system, each one followed by a specific triangulation algorithm, which accounts for the influence of the system's crossed-optical-axes geometry. In order to guarantee a sufficient robustness and simplicity of use, the system has been equipped with a procedure for the automatic determination of the measurement parameters, both geometrical and optical, as well as for the necessary image preprocessing. The developed procedures increase the measurement performance both in terms of resolution and of extension of the measurement range, and keep the complexity of the system compatible with its use in the industrial field.