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Dissertations / Theses on the topic 'Three-dimensional scanner'

Author: Grafiati

Published: 14 March 2023

Last updated: 31 July 2025

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1

Lewark, Erick A. "Automated techniques in anthropometry using a three dimensional laser scanner." Ohio : Ohio University, 1998. http://www.ohiolink.edu/etd/view.cgi?ohiou1176485676.

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2

Moreira, Sandro Silva [UNESP]. "Projeto e construção de um scanner tridimensional baseado no método de triangulação a laser utilizando softwares livres." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/148571.

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Submitted by Sandro Moreira (moreira.sandro@gmail.com) on 2017-01-18T18:23:17Z No. of bitstreams: 1 SandroMoreira-DissertacaoMestradoFinal.pdf: 12934831 bytes, checksum: a63cb94b201b877dc272a7bccad284bc (MD5)<br>Approved for entry into archive by LUIZA DE MENEZES ROMANETTO (luizamenezes@reitoria.unesp.br) on 2017-01-23T19:48:34Z (GMT) No. of bitstreams: 1 moreira_ss_me_ilha.pdf: 12934831 bytes, checksum: a63cb94b201b877dc272a7bccad284bc (MD5)<br>Made available in DSpace on 2017-01-23T19:48:34Z (GMT). No. of bitstreams: 1 moreira_ss_me_ilha.pdf: 12934831 bytes, checksum: a63cb94b201b877dc27

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3

Moreira, Sandro Silva. "Projeto e construção de um scanner tridimensional baseado no método de triangulação a laser utilizando softwares livres /." Ilha Solteira, 2016. http://hdl.handle.net/11449/148571.

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Orientador: Ruis Camargo Tokimatsu<br>Resumo: A modelagem tridimensional muito já contribuiu com a indústria do entretenimento e agora tem sido amplamente utilizada na manufatura e criação de novos produtos. A possibilidade de se ter um modelo de um produto a um preço menor e com uma maior rapidez tem feito essa técnica ser cada vez mais aceita em todas as áreas da engenharia. Quando já se tem um modelo real e deseja-se realizar alguma modificação, simulação ou mesmo replicar o produto, a engenharia reversa muito pode contribuir, pois permite a obtenção do modelo tridimensional a partir do obj

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Fracarolli, Juliana Aparecida 1984. "Levantamento das coordenadas espaciais de corpos vegetais associado ao mapeamento de bioatividade e cor." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257126.

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Orientadores: Inacio Maria Dal Fabbro, Adilson Machado Enes<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola<br>Made available in DSpace on 2018-08-24T11:36:45Z (GMT). No. of bitstreams: 1 Fracarolli_JulianaAparecida_D.pdf: 5319280 bytes, checksum: 4488936faca98d4c091c7703b2fd0ca0 (MD5) Previous issue date: 2014<br>Resumo: Técnicas ópticas vêm sendo utilizadas para diversas finalidades técnicas e científicas. Algumas técnicas ópticas se caracterizam como métodos robustos, de baixo custo, não invasivos e não destrutivos para avaliação de materiais dive

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OBRADOVIC, Marija. "Interdisciplinary three-dimensional investigation of the Early Prehistoric deposits of Fumane Cave (Verona, Italy)." Doctoral thesis, Università degli studi di Ferrara, 2016. http://hdl.handle.net/11392/2496455.

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La tesi è focalizzata sulla realizzazione delle indagini geofisiche e topografiche tridimensionali, applicabile sui siti preistorici e basate sull’esempio della Grotta di Fumane (Verona, Italia). I metodi applicati includono la tomografia di resistività elettrica (ERT), le onde sismiche di superficie (HVSR), laser scanner e fotogrammetria. Lo studio ha coinvolto l'uso delle due configurazioni elettrodiche, Wenner-Schlumberger (WSC) e PolePole (PP), sia per avere maggiore risoluzione nei primi 2-3 metri del deposito, sia per ottenere informazioni sulla profondità totale del deposito e la posizi

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6

Gagnon, Éric. "A three-dimensional laser range scanner based on the self-mixing effect in a laser diode." Thesis, University of Ottawa (Canada), 1997. http://hdl.handle.net/10393/9895.

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In the last few decades, the field of artificial vision has witnessed an overwhelming growth through academic research and increasing industry demands. One of the more exciting and promising developments in the field has taken form in the 3D vision paradigm. With the advent of 3D vision, the possibility to directly map in three dimensions the shape of an object has opened a wealth of new possibilities. The purpose of this work is to present the theory and design of a low-cost, portable and accurate 3D laser range scanning system. The system allows direct acquisition of 3D images from a scene.

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Heathcote, Alan D. "The dual development of an optical tomographic scanner and three dimensional gel dosimeter for complex radiotherapy verification." Thesis, University of Hull, 2008. http://hydra.hull.ac.uk/resources/hull:764.

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The state-of-the-art radiotherapy delivery treatments available today require that the intended dose distributions delivered are verified by volumetric gel dosimetry. The development of tissue equivalent gel dosimeters that provide an integrated assessment of the dynamic treatments, are primarily imaged with Magnetic Resonance Imaging (MRI). This thesis describes the dual development and assessment of an optical tomographic scanner and normoxic gel dosimeter. MRI centers are currently limited in both time and resources in providing the routine imaging necessary for treatment verification. An a

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8

Longo, Federico. "Three-dimensional computation of femoral canine morphological parameters: from the theory to the surgery application." Doctoral thesis, Università degli studi di Padova, 2017. http://hdl.handle.net/11577/3426322.

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The present research was envisioned as a project defined by multiple studies that are strictly correlated each other. The report of the birth, development and practical application to the diagnostic and surgery fields of a novel 3D approach for the computation of femoral measurements was the first aim. Moreover, in the authors’ purpose the description of the translational value of the proposed procedure enhanced with its plausible utility to the daily practice of orthopaedic surgeons, represented another focal point. In this sense, the research started from the validation of the 3D assessme

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9

DI, VECE LUCA. "A study into the clinical effects of the rapid palatal expansion." Doctoral thesis, Università di Siena, 2017. http://hdl.handle.net/11365/1022996.

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This thesis contains different studies on the effects of the rapid palatal expansion.The purpose of this thesis is to investigate some of the effects of palatal expansion which are still unaddressed in literature. The first part of the thesis, after a brief introduction to the transverse maxillary contraction and palatal expansion, will outline the results of clinical trials that relate to the non-orthodontic effects that palatal expansion may have on: cervical vertebrae, posture and upper airways.The second part will show the first results, from an orthodontical point of view, of a multicent

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Laforge, Travis. "Specialization in Small-Scale Societies: The Organization of Pottery Production at Kolomoki (9ER1), Early County, Georgia." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4115.

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Investigating the organization of production systems can reveal much about a society, in particular how resources and labor were allocated, and the influence that economic, political, social, and ceremonial institutions had on the production process. Interpreting the nature of specialized production is useful for understanding how production was organized. In turn, the degree of standardization exhibited by the goods being produced is used to determine the nature of specialization. While archaeological research regarding specialized production has expanded over time to incorporate a wide range

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Sabo, Stanislav. "Tvorba 3D modelu budovy s využitím laserového skenování." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-390227.

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The aim of this thesis is to scan the part of the interior and exterior of the Faculty of Electrical Engineering and Communication building using the FARO Focus3D X 130 scanner, and the creation of a 3D model in the WGS 84 system. Subsequently, methods, status and utilization research of this technology and point cloud processing software is provided. The collected data are processed in the SCENE. Three-dimensional model is designed using the Pointfuse and Microstation V8i programs. In the end, the registration accuracy of the scans and the resulting 3D model accuracy are evaluated.

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12

Zhang, Xin, and 张鑫. "Sectional image reconstruction in optical scanning holography." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B4476487X.

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13

Foley, Christopher. "Three-Dimensional Magnetic Resonance Imaging with Mechanically Scanned Interventional Surface Coils." Thesis, Imperial College London, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.485412.

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A method to create three-dimensional images is demonstrated by using colonoscopy in magnetic resonance imaging (MRI) as an application. A stack of twodimensional images is acquired by moving an internal surface coil along the structure of interest and using the images as the basis for creating the three-dimensional image.. Spatial information about the individual two-dimensional images is required in order to t' correctly build the three-dimensional image: Specialised tracking coils for the colonoscope have been constructed to provide the location and orientation needed for each image acquired

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14

Dutton, Andrew William 1963. "A three-dimensional geometrical patient treatment planning program for scanned focussed ultrasound hyperthermia." Thesis, The University of Arizona, 1990. http://hdl.handle.net/10150/277295.

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A computer graphics workstation was developed to geometrically plan scanned focussed ultrasound hyperthermia treatments, and is currently in clinical use at the Arizona Health Sciences Center. The workstation allows the user to base the treatment plan on any set of hard copy images of the patient's treatment anatomy by using a frame grabber to import these images into the workstation. Anatomical structures are outlined by the user, and a three dimensional image is reconstructed using these outlines. A geometric outline of the ultrasound power deposition field is then inserted into the reconstr

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15

Tam, Chung-yan Candy. "Study of rock joint roughness using 3D laser scanning technique." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/b40203487.

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Tam, Chung-yan Candy, and 譚頌欣. "Study of rock joint roughness using 3D laser scanning technique." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B40203487.

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17

Osnes, Cecilie. "Investigating clinically relevant methods of assessing the quality of three-dimensional surface scan data in dentistry." Doctoral thesis, Università di Siena, 2021. http://hdl.handle.net/11365/1127327.

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Title: Investigating clinically relevant methods of assessing the quality of three-dimensional surface scan data in dentistry Motivation: Having an awareness of the quality of three-dimensional (3D) scan data produced by a dental scanner can affect the clinician’s treatment plan, and potentially whether they choose to invest in a 3D scanner for clinical use. Assessing the quality of 3D scan data can therefore be of great value both to practitioners and scanner manufacturers. Statement of problem: Assessing the quality of 3D data is a challenge; assessing the quality of 3D data for clinica

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18

Brendler, Clariana Fischer. "Método para levantamento de parâmetros antropométricos utilizando um digitalizador 3D de baixo custo." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/79810.

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Este trabalho tem como objetivo principal desenvolver um método para obtenção de parâmetros antropométricos através de um digitalizador tridimensional de baixo custo. A fundamentação teórica da presente pesquisa abrange temas relacionados ao processo de Design, produtos personalizados e de tecnologia assistiva, além da relação entre os parâmetros antropométricos e o projeto de produto. Assim, foram investigados os métodos utilizados para o levantamento dos parâmetros antropométricos pelo processo direto de medição e o respectivo estado da arte. Ainda, foram investigados os métodos utilizados p

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19

Abdou, Dalia Ahmed Selim Ali. "Three dimensional (3D) forensic facial reconstruction in an Egyptian population using computed tomography scanned skulls and average facial templates : a study examining subjective and objective assessment methods of 3D forensic facial reconstructions." Thesis, Queen Mary, University of London, 2018. http://qmro.qmul.ac.uk/xmlui/handle/123456789/41763.

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Forensic facial reconstruction can assist identification by reconstructing a face of the unknown person with the aim of its recognition by his/her family or friends. In the facial reconstruction approach adopted in this study, a 3D average face template was digitally warped onto a 3D scanned skull image. This study was carried out entirely on an Egyptian population, and was the first of its kind. Aims: This study aimed to demonstrate that 3D facial reconstructions using the novel methodology described could show significant resemblance to the faces corresponding to the persons in question when

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20

Lin, Shih-Che, and 林士哲. "Three-Dimensional positioning for airborne three-line-scanner imagery." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/vntj6j.

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碩士<br>國立中央大學<br>土木工程研究所<br>93<br>Airborne three-line-scanner images have the merits of high spatial and spectral resolutions and excellent converging geometry. Thus, the images have become an important data source in environmental remote sensing, GIS and three dimensional positioning. The three-line-scanner acquires three different direction images, which have plenty of overlapped area in flying. Thus, the bundle adjustment is selected to calculate the dynamic orientation parameters. The additional parameters will be included in the adjustment. The orientation parameters are modeled using low-

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21

Yu-XiangZheng and 鄭宇翔. "Development of Three-Dimensional Raster Scanner Prototype with Structured Lighting." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/a2ef9s.

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碩士<br>國立成功大學<br>機械工程學系<br>102<br>Three-dimensional raster scanner is a challenging instrument. To complete this machine needs many theories, such as stereovision, camera calibration, structured light techniques, positioning registration and skill of software development. Purpose of this study is to develop a three-dimensional raster scanner, which has double scanning range compared to normal dental scanner. This study employs stereo visualization theory with dual cameras, in order to obtain two camera's parameters by Tsai's calibration method. After camera calibration, we use a projector to pr

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LIANG-CHUN, LIN, and 林亮均. "Three Dimensional Model Reconstruction Using Structured-light Scanner And Robotic Arm." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/3u9n85.

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碩士<br>國立中正大學<br>機械工程系研究所<br>106<br>The study integrates structure light system with six-axis manipulator to examine the algorithm performance in different situation. Generally, based on the CAD model, flat patch recursive algorithm is used to calculate the scanning gestures for robot equipped with a 3D scanner. However, the required number of gestures calculated by flat patch recursive algorithm is significant for CAD model with huge number of meshes. To improve the efficiency of existing scanning gesture searching algorithm, this study expanded the concept of region growing which is commonly

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JIAN-LIANG, LIU, and 劉建良. "Design and Development of Three-Dimensional Structured Light Scanner with Color Coding." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/84011731523458911829.

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碩士<br>國立中正大學<br>機械工程系研究所<br>104<br>The research aims to develop a method about structured light codec techniques. In the last few years, gray code is commonly used for structured-light 3D scanner measuring which is accurate but time consuming. Therefore, this paper takes advantage of color image with three channels to reduce the number of projected images in the same resolution, improving the scanning efficiency. However, the depth accuracy reconstructed by color code is not as good as gray code. In order to improve the accuracy of color code, this paper propose an idea that offset the pattern

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Rudko, David. "Prototype fan beam optical computed tomography scanner for three-dimensional radiotherapy dose verification." Thesis, 2008. http://hdl.handle.net/1828/2571.

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A prototype rapid, high precision fan beam optical computed tomography (OptCT) scanner for three-dimensional polymer gel dosimetry of complex radiotherapy protocols has been developed. This study documents the design. construction and characterization of the system, as well as preliminary reconstructed optical attenuation images and dosimetric verification experiments. The principal goal in scanner design and implementation was to satisfy the Radiotherapy Accuracy and Precision (RTAP) criteria consisting of a spatial resolution of 1 x 1 x 1 mm3, an imaging time of 60 minutes, a dose accuracy w

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Campbell, Warren G. "Development of a fan-beam optical computed tomography scanner for three-dimensional dosimetry." Thesis, 2010. http://hdl.handle.net/1828/3036.

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The current state of a prototype fan-beam optical computed tomography scanner for three-dimensional radiation dosimetry has been presented. The system uses a helium-neon laser and a line-generating lens for fan-beam creation. Five photodiode arrays form an approximate arc detector array of 320-elements. Two options of physical collimators provide two levels of scatter-rejection: single-slot (SS) and multi-hole (MH). A pair of linear polarizers has been introduced as a means of light intensity modulation. This work examined: (i) the characterization of system components, (ii) data acquisition

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Ramm, Daniel Paul Norman. "An optical computed tomography scanner for three dimensional gel dosimetry of radiotherapy dose distributions." Thesis, 2018. http://hdl.handle.net/2440/119799.

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Clinical radiotherapy treatments using linear accelerator (linac) generated megavoltage xray beams are planned using computer models that calculate patient specific three dimensional (3D) radiation dose distributions. Treatment planning system (TPS) calculated doses are evaluated by clinicians to ensure suitable dose coverage of targeted tumours and the avoidance of excessive doses to normal tissues. The accuracy of the TPS must be validated by measurement to ensure correct patient treatments. Traditional radiotherapy dosimeters do not measure dose entirely in 3D. They effectively ‘spot

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Alexander, Howard E. "The inter-rater and intra-rater reliability of capturing foot parameters utilising a computerised white light three dimensional scanner." Thesis, 2014. http://hdl.handle.net/10539/15307.

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Thesis (M.Sc.(Sports Medicine))--University of the Witwatersrand, Faculty of Health Sciences, 2014.<br>Within the context of sports medicine, biomechanical corrective custom foot orthoses are utilised as a treatment intervention to correct pathological gait disorders. In order to manufacture such corrective devices a replicate model of the patients’ foot needs to be obtained. This study aimed to assess both the inter-rater reliability and the intra-rater repeatability of a semi weight bearing foot modelling technique employing a three dimensional white light surface foot scanner. The sample c

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Fernandes, Danilo. "Avaliação tridimensional das alterações volumétricas dos tecidos peri-implantares em implantes imediatos após extrações dentárias : um estudo retrospetivo." Master's thesis, 2019. http://hdl.handle.net/10400.14/28467.

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Introdução: Após a extração dentária tem início o processo de remodelação dos tecidos ósseos e tecidos moles, provocando alterações morfológicas nos mesmos. A colocação de implantes dentários imediatos com a aplicação de substitutos ósseos e matrizes de colagénio reabsorvíveis tende a minimizar a reabsorção que tem lugar nos tecidos peri-implantares. Apesar desta vantagem, é difícil prever com precisão o que acontece após esta sequência de tratamento, uma vez que são envolvidos tanto tecidos ósseos como tecidos moles da região peri-implantar. Objetivos: Analisar as alterações volumétricas q

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