DETERMINATION OF MEASUREMENT ACCURACY OF OPTICAL 3D SCANNERS

Abstract

Nowadays, the use of optical 3D digitisation in metrology becomes more frequent and desired. Unfortunately, there are still no binding standards for determining measurement uncertainty of these systems and manufacturers of 3D scanners often use their own standards to define accuracy of their device. This paper introduces a methodology to assess the accuracy of digitisation using 3D optical scanners. The paper deals with practical implementation of an acceptance test for ATOS contact-less 3D scanners (from design and manufacturing of own test etalon, through the determination of its nominal dimensions, up to digitisation and evaluation) and publishes the results of several experiments demonstrating the impact of various factors on measurement accuracy.

Recommended articles

INNOVATION TESTING OF BENDING OF THE MACHINE-TOOL FRAMES

OLDRICH UCEN, LUBOMIR W. NOVOTNY
Keywords: geometric precision | guideways | FEM calculations | Machine tools | machine-tool frame | rotating screw

RELATIONSHIP BETWEEN VALUES OF PROFILE AND AREAL SURFACE TEXTURE PARAMETERS

MATEJ HARCARIK, ROBERT JANKOVYCH
Keywords: surface texture | surface metrology | areal surface texture parameters | tolerances | regression

IMPACT RESISTANCE OF DIFFERENT TYPES OF LATTICE STRUCTURES MANUFACTURED BY SLM

RADEK VRANA, DANIEL KOUTNY, DAVID PALOUSEK
Keywords: selective laser melting | lattice structure | impact resistance | AlSi10Mg | gyroid | energy absorption | topology

GEOMETRIC ERRORS COMPENSATION OF CNC MACHINE TOOL

MICHAL HOLUB, PETR BLECHA, FRANTISEK BRADAC, TOMAS MAREK, ZDENEK ZAK
Keywords: geometric accuracy | volumetric accuracy | small CNC machine tools | Laser interferometer | ballbar | LaserTRACER