Analysis of Measurement Accuracy of Contactless 3d Optical Scanners

Mendřický, Radomír

doi:10.17973/mmsj.2015_10_201541

Cited by 9 publications

(8 citation statements)

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“…Poređenje merenja primenom optičkih mernih sistema i koordinatne merne mašine 6. REZULTATI MERENJA Merenja su obuhvatala dimenzionu proveru i proveru tolerancija oblika i položaja.…”

Section: A) B)unclassified

“…Research in [6] dealt with the analysis of precision in the digitization of elements measured using a 3D scanner and presented the limitations of optical systems. The paper pointed out the possibility of selection, areas of use and limitations of appropriate optical devices for digitization.…”

Section: Introductionmentioning

confidence: 99%

“…Istraživanja u radu [6] su se bavila analizom preciznosti prilikom digitalizacije elemenata merenih pomoću 3D skenera i dat je prikaz ograničenja optičkih sistema. Rad je ukazao na mogućnost izbora, oblasti korišćenja i ograničenja odgovarajućih optičkih uređaja za digitalizaciju.…”

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Comparison of measurement using optical measuring systems and coordinate measuring machine

Simonović¹,

Lazarević²,

Simonović³

et al. 2020

IMK-14 Istraživanje i razvoj

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The paper presents the results of measuring the gearbox housing with the ATOS optical measuring system, the TRITOP system and the "TESA micro-hit 4-5-4" coordinate measuring machine. The aim of the study was to determine the differences in modern measuring systems and whether these differences affect the final measurement result when controlling parts of a complex configuration. At the beginning of the paper, the way of functioning of the used measuring systems and the results of research in this area are described. GOM Inspect software used for the ATOS and TRITOP measuring systems, while PC DMIS software used for the coordinate measuring machine. The analysis of the obtained results showed that there are significant differences in the measurement results and that the measuring systems used can't be applied with the same success to the measurement of parts of complex configuration such as the gearbox housing.

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“…Poređenje merenja primenom optičkih mernih sistema i koordinatne merne mašine 6. REZULTATI MERENJA Merenja su obuhvatala dimenzionu proveru i proveru tolerancija oblika i položaja.…”

Section: A) B)unclassified

Section: Introductionmentioning

confidence: 99%

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Comparison of measurement using optical measuring systems and coordinate measuring machine

Simonović¹,

Lazarević²,

Simonović³

et al. 2020

IMK-14 Istraživanje i razvoj

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“…Optical 3D digitisation is increasingly replacing coordinate measuring machine (CMM) measurements. Its popularity, in practice, is given not only by the speed of the measurement and the possibility of evaluating any demanding shape, but also due to the increasing accuracy of the measurement [Navrat 2019], [Mendricky 2015[Mendricky , 2016. During 3D scanning, the part is first digitised and the inspection only takes place on the virtual model thus obtained.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Accuracy of Virtual Clamping in the Field of 3d Scanning

Mendřický¹,

Kafka²

2021

MMSJ

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When measuring large and flexible parts, specialised measuring and clamping jigs are used as the standard, which fix the part to the required position. However, because the production of such jigs is time consuming and very expensive, software tools have recently started to appear on the market, which allow even large flexible parts to be measured in a free state and to use so-called virtual clamping for alignment the part in the mounting position. This technique uses the finite element method to simulate deformations during clamping. In this way, the inspection time can be significantly reduced and costs can be saved. However, the question remains how reliable and accurate this method is compared to the measurements in a physical jig. The article introduces the results of the analysis of the accuracy and repeatability of virtual clamping on the part "front fender of the Octavia car". The research showed that the conformity has not yet reached the values declared by the manufacturer, on the other hand, the measurement uncertainty during the virtual clamping was lower than during the measurement in a real jig. This, together with other indicators, indicates the great potential of the virtual clamping method in the future.

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“…by Harding [10], researching the sensitivity of scanners to colour and surface roughness. Most recent studies on the accuracy of 3D scanners touched the problem of comparing the possibilities and versions of software for data analysis, and focused on methods for the digitization of complexly shaped-objects [11,12]. Hence, studies on measuring strategies are relevant means of broadening our knowledge regarding the effect of multiple factors on the measuring accuracy of optical scanners.…”

Section: Introductionmentioning

confidence: 99%

Measurement strategy as a determinant of the measurement uncertainty of an optical scanner

Koteras¹,

Wieczorowski

Znaniecki³

et al. 2019

Archives of Mechanical Technology and Materials

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The subject of the article is an attempt to determine the impact of the applied measurement strategy on the accuracy of the measurement result. This problem is particularly crucial when measuring large objects. In these cases, it is not always possible to provide ideal conditions for the submission of particular scans. It is necessary to adjust the strategy to specific imposed conditions defined by the geometry of the object and to the time frame of the measurement itself. With regard to the above, an attempt was made to carry out a series of accuracy studies testing the structural light scanner while measuring elements of overall dimensions greater than the measuring capacity of the scanner. At the same time, various potential measuring strategies were simulated in practical applications. Our studies were conducted using a pre-designed test template with a defined distribution pattern of reference points and geometrical elements. Moreover, in order to make an in-depth investigation of the issue, some trials were undertaken with the use of limiting parameters. That means the scanner had both an excess and shortage of information required for a correct assembly of scans. Those scopes were taken into consideration in the study in order to use the acquired knowledge in practical measuring applications. Furthermore, conclusions from the conducted studies indicate peaks and troughs of respective measuring strategies with special care for determining relationships among the used strategies and the measuring accuracy parameters.

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Analysis of Measurement Accuracy of Contactless 3d Optical Scanners

Cited by 9 publications

References 0 publications

Comparison of measurement using optical measuring systems and coordinate measuring machine

Comparison of measurement using optical measuring systems and coordinate measuring machine

Analysis of the Accuracy of Virtual Clamping in the Field of 3d Scanning

Measurement strategy as a determinant of the measurement uncertainty of an optical scanner

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