scholarly journals 3D scanner application in the function of digital foot antropometry (FootSABA 3D Foot Scanner)

2019 ◽  
Vol 68 (2) ◽  
pp. 25-29 ◽  
Author(s):  
Sarajko Baksa ◽  
Ines Baksa ◽  
Budimir Mijović
Keyword(s):  
3D Models ◽  
Medical Evidence ◽  
3D Scanner ◽  
Traditional Methods ◽  
Modern Approach ◽  
Pathological Conditions ◽  
3D Scanners ◽  
Digital Methods ◽  
Foot Morphology ◽  
3D Digitization

The personalization of footwear in terms of dimension and shape is of the utmost importance and is nowadays considered vitally important by interdisciplinary professions (medical, footwear, ergonomics ...), since inadequately manufactured footwear inevitably results in unwanted pathological conditions of the feet.The aim of this study is to scientifically determine the application of automated 3D digitization of spatial anthropometric foot measurement in relation to the frequency of incorrectly selected footwear based on traditional methods of measurement and selection.Among the examined individuals, both male and female, it was found that more than two thirds of people wear footwear that ergonomically does not fit the basic anthropometric footwear measurements, both in width and length of their feet.There is medical evidence that wearing inappropriate footwear is closely related to pain and wounds on the feet, and that prolonged wearing leads to pathological changes of the feet, such as foot and toe deformation.In the scope of taking measures, traditional methods of determining foot morphology are not sufficient to accurately define the shape and size, in contrast to the modern approach of using 3D scanners and digital methods of measuring virtual 3D models, which enable a very accurate and quick personalization of a large amount of anthropometric data concerning foot morphology.

scholarly journals Structured-light 3D scanning of exhibited historical clothing—a first-ever methodical trial and its results

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Jerzy Montusiewicz ◽  
Marek Miłosz ◽  
Jacek Kęsik ◽  
Kamil Żyła
Keyword(s):  
Cultural Heritage ◽  
Information Technologies ◽  
Structured Light ◽  
Three Dimensional ◽  
3D Models ◽  
3D Scanning ◽  
Dimensional Representation ◽  
3D Scanner ◽  
Three Dimensional Representation ◽  
3D Scanners

AbstractHistorical costumes are part of cultural heritage. Unlike architectural monuments, they are very fragile, which exacerbates the problems of their protection and popularisation. A big help in this can be the digitisation of their appearance, preferably using modern techniques of three-dimensional representation (3D). The article presents the results of the search for examples and methodologies of implementing 3D scanning of exhibited historical clothes as well as the attendant problems. From a review of scientific literature it turns out that so far practically no one in the world has made any methodical attempts at scanning historical clothes using structured-light 3D scanners (SLS) and developing an appropriate methodology. The vast majority of methods for creating 3D models of clothes used photogrammetry and 3D modelling software. Therefore, an innovative approach was proposed to the problem of creating 3D models of exhibited historical clothes through their digitalisation by means of a 3D scanner using structural light technology. A proposal for the methodology of this process and concrete examples of its implementation and results are presented. The problems related to the scanning of 3D historical clothes are also described, as well as a proposal how to solve them or minimise their impact. The implementation of the methodology is presented on the example of scanning elements of the Emir of Bukhara's costume (Uzbekistan) from the end of the nineteenth century, consisting of the gown, turban and shoes. Moreover, the way of using 3D models and information technologies to popularise cultural heritage in the space of digital resources is also discussed.

scholarly journals Low-Cost Prototype to Automate the 3D Digitization of Pieces: An Application Example and Comparison

Sensors ◽  
2021 ◽  
Vol 21 (8) ◽  
pp. 2580
Author(s):  
Ramón González-Merino ◽  
Elena Sánchez-López ◽  
Pablo E. Romero ◽  
Jesús Rodero ◽  
Rafael E. Hidalgo-Fernández
Keyword(s):  
Low Cost ◽  
Cost Effective ◽  
3D Models ◽  
3D Scanner ◽  
3D Design ◽  
Robotic Arms ◽  
Effective System ◽  
3D Printers ◽  
Preliminary Study ◽  
3D Digitization

This work is aimed at describing the design of a mechanical and programmable 3D capturing system to be used by either 3D scanner or DSLR camera through photogrammetry. Both methods are widely used in diverse areas, from engineering, architecture or archaeology, up to the field of medicine; but they also entail certain disadvantages, such as the high costs of certain equipment, such as scanners with some precision, and the need to resort to specialized operatives, among others. The purpose of this design is to create a robust, precise and cost-effective system that improves the limitations of the present equipment on the market, such as robotic arms or rotary tables. For this reason, a preliminary study has been conducted to analyse the needs of improvement, later, we have focused on the 3D design and prototyping. For its construction, there have been used the FDM additive technology and structural components that are easy to find in the market. With regards to electronic components, basic electronics and Arduino-based 3D printers firmware have been selected. For system testing, the capture equipment consists of a Spider Artec 3D Scanner and a Nikon 5100 SLR Camera. Finally, 3D models have been developed by comparing the 3D meshes obtained by the two methods, obtaining satisfactory results.

scholarly journals 3D DIGITIZATION OF FEATURELESS DENTAL MODELS USING CLOSE RANGE PHOTOGRAMMETRY AIDED BY NOISE BASED PATTERNS

2018 ◽  
Vol 16 (3) ◽  
pp. 297 ◽  
Author(s):  
Željko Santoši ◽  
Igor Budak ◽  
Mario Šokac ◽  
Tatjana Puškar ◽  
Đorđe Vukelić ◽  
...  
Keyword(s):  
3D Model ◽  
3D Models ◽  
Physical Models ◽  
3D Scanner ◽  
Close Range Photogrammetry ◽  
Close Range ◽  
Dental Models ◽  
Visual Properties ◽  
3D Digitization ◽  
3D Digitizing

Development and improvement of 3D digitizing systems provide for the ability to digitize a growing number of materials and geometrical forms of greater complexity. This paper presents the application of 3D digitizing system using close range photogrammetry on the upper jaw cast in plaster in order to obtain its 3D model. Because of the low visual characteristics of gypsum, such as color and texture, many questions arise about the possibility of applying this particular method to this type of physical models. In order to overcome bad visual properties of gypsum, this paper analyzes the possibility of the photogrammetry method application supported by the projected light texture which is based on patterns in the form of noise-obtained  mathematically modeled functions. In order to determine the selected image for light texture which gives the better results, an experiment was designed and carried out. Only two images were tested. One image is selected based on previous research and the other one was generated by the Matlab function for uniformly distributed random numbers. For validation and a comparative analysis of the results, an object of 3D digitization was generated with and without projected light texture. CAD inspection was applied for the analysis of the obtained 3D digitizing results. 3D model obtained by approved professional optical 3D scanner as a reference was used. The results in this paper confirm better accuracy of 3D models obtained with the use of light textures, but this approach requires additional hardware and setup adjustment for images acquisition.

scholarly journals Metadata schema and ontology for capturing and processing of 3D cultural heritage objects

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Timo Homburg ◽  
Anja Cramer ◽  
Laura Raddatz ◽  
Hubert Mara
Keyword(s):  
Cultural Heritage ◽  
Measurement Data ◽  
Image Generation ◽  
3D Scanner ◽  
Fine Detail ◽  
3D Scanners ◽  
3D Acquisition ◽  
3D Processing ◽  
Cultural Heritage Objects ◽  
Processing Steps

AbstractMotivated by the increased use of 3D acquisition of objects by cultural heritage institutions, we were investigating ontologies and metadata schemes for the acquisition process to provide details about the 3D capturing, which can be combined with preexisting ontologies describing an object. Therefore we divided the 3D capturing workflow into common steps starting with the object being placed in front of a 3D scanner to preparation and publication of the 3D datasets and/or derived images. While the proposed ontology is well defined on a coarse level of detail for very different techniques, e.g. Stucture from Motion and LiDAR we elaborated the metadata scheme in very fine detail for 3D scanners available at our institutions. This includes practical experiments with measurement data from past and current projects including datasets published at Zenodo as guiding examples and the source code for their computation. Additionally, the free and Open Source GigaMesh Software Framework’s analysis and processing methods have been extended to provide metadata about the 3D processing steps like mesh cleaning as well as 2D image generation. Finally, we discuss the current limitations and give an outlook about future extensions.

scholarly journals Application of High-Resolution 3D Scanning in Medical Volumetry

2016 ◽  
Vol 62 (1) ◽  
pp. 23-31 ◽  
Author(s):  
Adam Chromy
Keyword(s):  
High Resolution ◽  
Recovery Process ◽  
3D Scanning ◽  
Volumetric Method ◽  
New Method ◽  
Medical Applications ◽  
Practical Application ◽  
3D Scanner ◽  
Standard Methods ◽  
3D Scanners

Abstract This paper deals with application of 3D scanning technology in medicine. Important properties of 3D scanners are discussed with emphasize on medical applications. Construction of medical 3D scanner according to these specifications is described and practical application of its use in medical volumetry is presented. Besides volumetry, such 3D scanner is usable for many other purposes, like monitoring of recovery process, ergonomic splint manufacturing or inflammation detection. 3D scanning introduces novel volumetric method, which is compared with standard methods. The new method is more accurate compared to present ones. Principles of this method are discussed in paper and its accuracy is evaluated and experimentally verified.

scholarly journals A novel method of photogrammetry measurements of study models in orthodontics

2019 ◽  
Vol 147 (1-2) ◽  
pp. 10-16
Author(s):  
Marijana Arapovic-Savic ◽  
Mihajlo Savic ◽  
Mirjana Umicevic-Davidovic ◽  
Adriana Arbutina ◽  
Nenad Nedeljkovic ◽  
...  
Keyword(s):  
Information Technologies ◽  
3D Models ◽  
3D Scanner ◽  
Mean Values ◽  
Digital Representations ◽  
Perspective Distortion ◽  
Tooth Width ◽  
Significant Difference ◽  
Novel Method ◽  
Camera Position

Introduction/Objective. Rapid developments in information technologies lead to the wider use of digital representations of dental study models in orthodontics. Most popular way of digitizing the models is to use a 3D scanner and then perform measurements on 3D models, which requires additional and expensive hardware and software resources. In this paper we present an alternative approach based on the use of photogrammetry in the newly developed OrthoPhoto4D software that calculates and corrects perspective distortion errors. Methods. We measured individual tooth width for 24 teeth, 12 two-teeth segments as well as inter-molar and inter-canine distances on 50 models. Measurements are performed in OrthoPhoto4D software that uses four photographs of each model for measurements, uses QR codes for automation, calculates the camera position and corrects perspective distortion-caused errors in measurements. Obtained measurements are compared to ones obtained from models generated by structured light 3D scanner. Results. Statistical analysis strongly indicates that there is no significant difference between the two methods. The recorded differences also have no clinical impact as they have mean values of 0.2 mm for individual tooth widths, approximately 0.2 mm for two teeth segments, and under 0.3 mm for both intercanine and inter-molar distances. All recorded differences fall within the expected measurement error. Conclusion. We concluded that the described photogrammetry measurements performed in OrthoPhoto4D can be used in diagnosis and therapy planning.

Quantitative volumetrische Analyse der unteren Extremität: Validierung gegenüber etablierter Maßbandmessung und Wasserverdrängung

2018 ◽  
Vol 50 (06) ◽  
pp. 393-399 ◽  
Author(s):  
Konstantin Christoph Koban ◽  
Virginia Titze ◽  
Lucas Etzel ◽  
Konstantin Frank ◽  
Thilo Schenck ◽  
...  
Keyword(s):  
3D Scanner ◽  
3D Scanners ◽  
3D Scans

Zusammenfassung Hintergrund Zur Diagnostik und Therapieevaluation des Lip- und Lymphödems werden im klinischen Alltag weiterhin Maßbandmessungen eingesetzt. Hierbei werden ausgehend von standardisierten Umfangsmessungen im Bereich der betroffenen Extremitäten deren Volumina errechnet. Andere Verfahren wie Wasserverdrängung werden nicht regelhaft eingesetzt.Ziel dieser Studie war die Erprobung eines 3D Scanners als alternatives und reproduzierbares Tool zur objektiven Erfassung der Volumina der unteren Extremität. Patienten, Material und Methoden Wir führten an 20 Probanden 3D Scans der unteren Extremitäten mit einem handelsüblichen 3D Scanner, dem Artec Eva® durch, und errechneten das Volumen mit der dazugehörigen Software. Das Volumen der Extremitäten wurde zudem gemäß standardisierter Verfahren durch die Umfangsmethode (Konusmethode und Scheibenmethode) sowie per Wasserverdrängungstechnik bestimmt. Die Ergebnisse sowie Durchführungsdauer der drei Messmethoden wurde dokumentiert und statistisch ausgewertet. Ergebnisse Mittels 3D Volumetrie zeigten sich keine signifikanten Abweichungen zur Wasserverdrängung (p > 0,05). Die Konusmethode überschätzte signifikant das in der Wasserverdrängung und 3D Volumetrie gemessene Volumen deutlich. Die Scheibenmethode zeigte keine statistisch signifikanten Abweichungen, jedoch klinisch relevant hohe Abweichungen mit einer ausgeprägten Varianz im 95 % Konfidenzintervall. Alle Verfahren zeigten hohe positive Korrelationen zueinander. Die Wasserverdrängung zeigte sich mit dem größten zeitlichen Aufwand verbunden. Schlussfolgerung Unserer Ergebnisse nach Untersuchung von 40 unteren Extremitäten zeigen, dass durch 3D Scans und Software-basierte volumetrische Berechnung in kurzer Zeit objektive und reproduzierbare Ergebnisse erzielt werden können. Die Abweichung gegenüber dem Goldstandard

scholarly journals Examination of Scanner Precision by Analysing Orthodontic Parameters

2017 ◽  
Vol 21 (1) ◽  
pp. 32-43 ◽  
Author(s):  
Nemanja Majstorović ◽  
Luka Čerče ◽  
Davorin Kramar ◽  
Mirko Soković ◽  
Branislav Glišić ◽  
...  
Keyword(s):  
3D Model ◽  
Spatial Models ◽  
3D Models ◽  
General Purpose ◽  
3D Modelling ◽  
3D Scanner

Summary Background: 3D modelling in orthodontics is becoming an increasingly widespread technique in practice. One of the significant questions already being asked is related to determining the precision of the scanner used for generating surfaces on a 3D model of the jaw. Materials and methods: This research was conducted by generating a set of identical 3D models on Atos optical 3D scanner and Lazak Scan laboratory scanner, which precision was established by measuring a set of orthodontic parameters (54 overall) in all three orthodontic planes. In this manner we explored their precision in space, since they are used for generating spatial models – 3D jaws. Results: There were significant differences between parameters scanned with Atos and Lazak Scan. The smallest difference was 0.017 mm, and the biggest 1.109 mm. Conclusion: This research reveals that both scanners (Atos and Lazak Scan), which belong to general purpose scanners, based on precision parameters can be used in orthodontics. Early analyses indicate that the reference scanner in terms of precision is Atos.

scholarly journals Contributions regarding 3D modelling of biomechanics of the foot

2021 ◽  
Vol 343 ◽  
pp. 04009
Author(s):  
Nicolae Florin Cofaru ◽  
Andrei Horia Brănescu ◽  
Vesna Marjanovic ◽  
Mirko Blagojevic ◽  
Vlăduţ Mihuţ
Keyword(s):  
3D Models ◽  
3D Modelling ◽  
Biomechanical Study ◽  
Human Foot ◽  
Pathological Conditions ◽  
State Research ◽  
Foot Motion ◽  
Cad Modelling ◽  
Biomechanics Of The Foot ◽  
Educational Field

Within this paper, a detailed study is elaborated regarding the human foot during both orthostatic and gait, the main goal being to develop 3D models which are very useful in the foot motion and loading state research. In order to elaborate the accurate 3D modelling of the human foot assembly, a thorough biomechanical study is done. Such a study was required due to the fact of the high anatomical complexity of the motions within the foot, taking into consideration the 26 bones and 33 joints consisting it. The research aims the CAD modelling of the biomechanics of the healthy subjects alongside with predisposed pathological conditions. The resulting models will have important utility in both educational field and for further CAE approaches and studies.

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