Journal ArticleDOI
Effect of matte coating on 3D optical measurement accuracy
TLDR
In this paper, a 3D optical scanner ATOS III, Triple Scan was used for data capturing and evaluation of matte coating thickness in the area of optical digitization, which is based on active fringe projection and triangulation.About:
This article is published in Optical Materials.The article was published on 2015-02-01. It has received 90 citations till now. The article focuses on the topics: Coating.read more
Citations
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Journal ArticleDOI
Adaptive digital fringe projection technique for high dynamic range three-dimensional shape measurement
TL;DR: A new adaptive digital fringe projection technique which avoids image saturation and has a high signal to noise ratio (SNR) in the three-dimensional (3-D) shape measurement of objects that has a large range of reflectivity variation across the surface.
Journal ArticleDOI
Effect of Process Parameters and High-Temperature Preheating on Residual Stress and Relative Density of Ti6Al4V Processed by Selective Laser Melting
Martin Malý,Christian Höller,Mateusz Skalon,Benjamin Meier,Daniel Koutný,Rudolf Pichler,Christof Sommitsch,David Paloušek +7 more
TL;DR: For an effective residual stress reduction, the high preheating temperature was the most significant parameter and caused changes in the chemical composition of Ti6Al4V unmelted powder.
Journal ArticleDOI
Three-Dimensional Shape Measurements of Specular Objects Using Phase-Measuring Deflectometry.
TL;DR: This work presents a review of the relevant techniques regarding classical and improved phase-measuring deflectometry, and discusses the challenges and future research directions to further advance PMD techniques.
Journal ArticleDOI
Surface Roughness Characterisation and Analysis of the Electron Beam Melting (EBM) Process
TL;DR: The aim of this work is to investigate the effects of the orientation and the slope of the EBM surfaces on the surface roughness, and the machine repeatability is studied by measuring the roughness of surfaces built at different positions on the start plate.
Journal ArticleDOI
Dimensional artefacts to achieve metrological traceability in advanced manufacturing
Simone Carmignato,L. De Chiffre,Harald Bosse,Richard Leach,Alessandro Balsamo,William T. Estler +5 more
TL;DR: Dimensional artefacts are examined, discussing their characteristics, availability and role in supporting production by establishing metrological traceability, and guidelines for their selection, use and development are provided.
References
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Proceedings ArticleDOI
Polarization and Phase-Shifting for 3D Scanning of Translucent Objects
TL;DR: This paper analyzes and compares two descattering methods in order to obtain reliable 3D coordinates for translucent objects and demonstrates the performance of these two techniques and the combination of them on scanning real-world translucent objects.
Journal ArticleDOI
Analysis of digitizing errors of a laser scanning system
TL;DR: In this article, the authors analyzed and characterized the digitizing errors of a high-speed 3D laser scanning system and found that the random error of the scanned data is close to the nominal value provided by the manufacturer.
Journal ArticleDOI
Separation of diffuse and specular components of surface reflection by use of polarization and statistical analysis of images
S. Umeyama,Guy Godin +1 more
TL;DR: It is shown that diffuse and specular components of surface reflection can be separated as two independent components when the application of independent component analysis to the images observed through a polarizer of different orientations.
Journal ArticleDOI
High dynamic range scanning technique
Song Zhang,Shing-Tung Yau +1 more
TL;DR: This paper addresses a high dynamic range scanning technique that can measure this type of object by taking advantage of one merit of a phase-shifting algorithm: pixel-by-pixel phase retrieval.
Proceedings ArticleDOI
Structured light 3D scanning in the presence of global illumination
TL;DR: This paper analyzes the errors caused by global illumination in structured light-based shape recovery and designs structured light patterns that are resilient to individual global illumination effects using simple logical operations and tools from combinatorial mathematics.