This paper illustrates an experimental method to assess the accuracy of a three-dimensional (3D) vision system for the inspection of complex geometry. The aim is to provide a procedure to evaluate task related measurement uncertainty for virtually any measurement task. The key element of the method is the use of a coordinate measuring machine (CMM) to supply reference measurements as basis for realistic statements of measurement uncertainty. Since robust techniques to establish traceability in CMM measurements of complex geometry are available, a CMM-based approach is suitable for the purpose to establish traceability. Accuracy performances of optical digitisation systems are assessed on the basis of deviations existing between acquired cloud points and the CMM measurements. To demonstrate the feasibility of the proposed method, the procedure is applied to an industrial case study.

Accuracy of a 3D vision system for inspection of complex geometry

CARMIGNATO, SIMONE;SAVIO, ENRICO;
2002

Abstract

This paper illustrates an experimental method to assess the accuracy of a three-dimensional (3D) vision system for the inspection of complex geometry. The aim is to provide a procedure to evaluate task related measurement uncertainty for virtually any measurement task. The key element of the method is the use of a coordinate measuring machine (CMM) to supply reference measurements as basis for realistic statements of measurement uncertainty. Since robust techniques to establish traceability in CMM measurements of complex geometry are available, a CMM-based approach is suitable for the purpose to establish traceability. Accuracy performances of optical digitisation systems are assessed on the basis of deviations existing between acquired cloud points and the CMM measurements. To demonstrate the feasibility of the proposed method, the procedure is applied to an industrial case study.
2002
Advanced Manufacturing Systems and Technology, Proceedings
6th International Conference on Advanced Manufacturing Systems and Technology - AMST2002
9783211836897
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/2468915
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