Laser Triangulation Sensors Performance in Scanning Different Materials and Finishes

Author:

Meana Victor1ORCID,Zapico Pablo1ORCID,Cuesta Eduardo1ORCID,Giganto Sara2ORCID,Martinez-Pellitero Susana2ORCID

Affiliation:

1. Department of Construction and Manufacturing Engineering, University of Oviedo, Campus of Gijon, 33203 Gijon, Spain

2. Area of Manufacturing Engineering, University of Leon—Universidad de León, Campus de Vegazana, 24071 Leon, Spain

Abstract

The variety of equipment implementing laser triangulation technology for 3D scanning makes it difficult to analyse their performance, comparability, and traceability. In this study, three laser triangulation sensors arranged in different configurations are analysed using high precision spheres made of different materials and surface finishes. Three types of reference parameters were used: diameter, form error, and standard deviation of the point cloud. The experimentation was based on studying the quality of the point clouds generated by the three sensors, which enabled us to find and quantify an edge effect in the horizon of the scanned surface. A procedure to reach the optimal filtering conditions was proposed, and a chart of recommended usage of each sphere (material and finish) was created for the different types of sensors. This filter enables removal of both spurious points and those few points that spoil the form error, greatly improving the quality of the measurement.

Funder

University Institute of Industrial Technology of Asturias

Publisher

MDPI AG

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