16 results on '"3D visualisation"'
Search Results
2. The Drone, the Snake, and the Crystal: Manifesting Potency in 3D Digital Replicas of Living Heritage and Archaeological Places.
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Wessels, Stephen, Maape, Sechaba, Schoville, Benjamin J., and Wilkins, Jayne
- Abstract
Copyright of Archaeologies is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
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3. Very Small Glaciers as Geoheritage: Combining a Spatio-Temporal Visualisation of Their Development and Related Effects of Climate Change.
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Čekada, Mihaela Triglav, Radovan, Dalibor, Lipuš, Bogdan, and Mongus, Domen
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Outside the main mountain ranges and high North and South regions, individual isolated very small glaciers are the only glacier remnants and exceptional high-mountain active geomorphosites, which can be used to represent climate change consequences first hand to the local general public. The isolated, very small Triglav glacier in Slovenia was used to represent 3D glacier area changes for the period 1829–2016, together with long-term meteorological changes. Spatio-temporal changes of the glacier were derived mainly from old images and postcards with the help of interactive orientation (monoplotting), which enables the acquisition of a 3D glacier boundary from a single image by using a modern detailed digital elevation model. Very intuitive 3D visualisation was prepared, which shows the spatio-temporal changes of the glacier area, together with changes in average annual temperature and maximum annual snow depth. The last two are presented by colour palettes, where red colours represent stages when temperatures or maximum snow depths deviate from long-term averages in a negative way, meaning accelerating the glacier area reduction. Blue colours are used for stages when these parameters deviate from long-term averages in a positive way, meaning preserving the glacier area. From this 3D visualisation, one can easily recognise which meteorological parameter is the most important for the Triglav glacier preservation; this is the maximum annual snow depth. Such kind of 3D visualisation has a great potential for promotion of other active or evolving passive geomorphosites too. [ABSTRACT FROM AUTHOR]
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- 2020
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4. The 3D Water Atlas: a tool to facilitate and communicate new understanding of groundwater systems.
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Wolhuter, Alexandra, Vink, Sue, Gebers, Andre, Pambudi, Friska, Hunter, Jane, and Underschultz, Jim
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GROUNDWATER ,GROUNDWATER management ,WATER table ,ATLASES ,WATER ,WATER levels - Abstract
Copyright of Hydrogeology Journal is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2020
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5. The horizontal plane appearances of scoliosis: what information can be obtained from top-view images?
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Illés, Tamás, Burkus, Máté, Somoskeőy, Szabolcs, Lauer, Fabien, Lavaste, Francois, Dubousset, Jean, Illés, Tamás S, Burkus, Máté, Somoskeőy, Szabolcs, and Dubousset, Jean F
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SCOLIOSIS treatment , *MEDICAL informatics , *THREE-dimensional imaging , *MEDICAL imaging systems , *DATA visualization , *CLINICAL trials , *SCOLIOSIS , *THORACIC vertebrae , *SURGERY - Abstract
Purpose: A posterior-anterior vertebral vector is proposed to facilitate visualization and understanding of scoliosis. The aim of this study was to highlight the interest of using vertebral vectors, especially in the horizontal plane, in clinical practice.Methods: We used an EOS two-/three-dimensional (2D/3D) system and its sterEOS 3D software for 3D reconstruction of 139 normal and 814 scoliotic spines-of which 95 cases were analyzed pre-operatively and post-operatively, as well. Vertebral vectors were generated for each case. Vertebral vectors have starting points in the middle of the interpedicular segment, while they are parallel to the upper plate, ending in the middle of the segment joining the anterior end plates points, thus defining the posterior-anterior axis of vertebrae. To illustrate what information could be obtained from vertebral vector-based top-view images, representative cases of a normal spine and a thoracic scoliosis are presented.Results: For a normal spine, vector projections in the transverse plane are aligned with the posterior-anterior anatomical axis. For a scoliotic spine, vector projections in the horizontal plane provide information on the lateral decompensation of the spine and the lateral displacement of vertebrae. In the horizontal plane view, vertebral rotation and projections of the sagittal curves can also be analyzed simultaneously.Conclusions: The use of posterior-anterior vertebral vector facilitates the understanding of the 3D nature of scoliosis. The approach used is simple. These results are sufficient for a first visual analysis furnishing significant clinical information in all three anatomical planes. This visualization represents a reasonable compromise between mathematical purity and practical use. [ABSTRACT FROM AUTHOR]- Published
- 2017
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6. Computed tomography-based three-dimensional visualisation of bone corridors and trajectories for screws in open reduction and internal fixation of symphysis diastasis: a retrospective radiological study.
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Michelitsch, Christian, Nguyen-Kim, Thi, Jentzsch, Thorsten, Simmen, Hans-Peter, Werner, Clément, Nguyen-Kim, Thi Dan Linh, and Werner, Clément M L
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COMPUTED tomography , *THREE-dimensional imaging , *INTERNAL fixation in fractures , *JOINT dislocations , *BONE screws , *PELVIC fractures , *TRAUMA surgery , *DIAGNOSIS of bone fractures , *FRACTURE fixation , *BONE fractures , *HIP joint injuries , *ORTHOPEDIC implants , *PUBIC symphysis , *RETROSPECTIVE studies , *DISEASE complications , *DIAGNOSIS , *SURGERY ,PUBIC symphysis injuries - Abstract
Introduction: Typical stabilisation of pelvic open book injuries consists of plate fixation of the symphysis. No previous literature has been published about the evaluation of screw placement and their trajectory with four oblique 4.5 mm screws using a four-hole plate in symphysis diastasis. The aim of this study was to define insertion points and angles of trajectory for crossed screw placement regardless of any plate design based on an analysis of three-dimensional computed tomography data sets.Methods: One hundred human pelvic CT data sets were collected. Unilateral and bilateral placements of crossed 4.5 mm screws were simulated. Primary outcome measure was successful simulated screw placement without cortical breach. Secondary outcome measures included the anatomical measurements of the screw positions.Results: Simulated screw placement of two oblique screws on each side of the pubic symphysis without cortical breach was achieved in all (100 %) cases. There were a total of 400 screw simulations. Medial screws were longer, lateral screws had higher coronal angles, and the distance between both screws was higher on the right side (p < 0.001 each). The lengths of the right lateral, right medial, left lateral, and left medial screws were 44.9, 65.8, 45.4, and 67.4 mm, respectively. The sagittal angles to the dorsal surface area of the pubic rami were 10.5°, 11.1°, 9.0°, and 11.0°. The coronal angles to the vertical axis of the symphysis measured 39.5°, 16.0°, 33.8°, and 16.8°. The distances between these screws and the medial edge of the pubic crest were 33.5, 8.6, 29.5, and 7.3 mm. Furthermore, certain sex- and side-related differences were noted.Conclusions: This series provides results about the feasibility and a detailed anatomical description of crossed screw placement. This is of special interest in pelvic surgery for choosing the entry points, safe screw channel parameters, and trajectories. [ABSTRACT FROM AUTHOR]- Published
- 2016
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7. Longitudinal three-dimensional visualisation of autoimmune diabetes by functional optical coherence imaging.
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Berclaz, Corinne, Schmidt-Christensen, Anja, Szlag, Daniel, Extermann, Jerome, Hansen, Lisbeth, Bouwens, Arno, Villiger, Martin, Goulley, Joan, Schuit, Frans, Grapin-Botton, Anne, Lasser, Theo, and Holmberg, Dan
- Abstract
Aims/hypothesis: It is generally accepted that structural and functional quantitative imaging of individual islets would be beneficial to elucidate the pathogenesis of type 1 diabetes. We here introduce functional optical coherence imaging (FOCI) for fast, label-free monitoring of beta cell destruction and associated alterations of islet vascularisation. Methods: NOD mouse and human islets transplanted into the anterior chamber of the eye (ACE) were imaged with FOCI, in which the optical contrast of FOCI is based on intrinsic variations of the index of refraction resulting in a faster tomographic acquisition. In addition, the phase sensitivity allows simultaneous label-free acquisition of vascularisation. Results: We demonstrate that FOCI allows longitudinal quantification of progressive autoimmune insulitis, including the three-dimensional quantification of beta cell volume, inflammation and vascularisation. The substantially increased backscattering of islets is dominated by the insulin-zinc nanocrystals in the beta cell granules. This translates into a high specificity for the functional beta cell volume of islets. Applying FOCI to a spontaneous mouse model of type 1 diabetes, we quantify the modifications of the pancreatic microvasculature accompanying the progression of diabetes and reveal a strong correlation between increasing insulitis and density of the vascular network of the islet. Conclusions/interpretation: FOCI provides a novel imaging technique for investigating functional and structural diabetes-induced alterations of the islets. The label-free detection of beta cell volume and infiltration together with vascularisation offers a unique extension to study ACE-transplanted human islets. These results are contributing to a deeper understanding of human islet transplant rejection and label-free in vivo monitoring of drug efficacy. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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8. Assessing the Socio-economic Impact of 3D Visualisation in Cultural Heritage.
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Kaminski, Jaime, McLoughlin, Jim, and Sodagar, Babak
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Despite the multitude of impact measurement techniques available to heritage site managers there is a case for the bigger strategic picture to figure more strongly in impact measurement decision making for ICT and 3D applications in the heritage sector. Discussions with heritage mangers raised the need for a holistic practical social impact model, one which combines impact measurement with overall strategic decision making considerations, accommodating internal and external dimensions of impact, as well as mission (and vision) and stakeholder perspectives; and one that embeds impact as a dynamic issue for management in heritage organisations. The 3D-ISF approach is broadly divided into two complementary elements. The left side of the framework considers the strategic perspective of the organization, while the right side encapsulates the impact measurement. The two elements combine to form a holistic vision of the interaction between the site strategy, 3D deployment and its relationship to impact. [ABSTRACT FROM AUTHOR]
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- 2010
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9. Palaeontology in the third dimension: a comprehensive guide for the integration of three-dimensional content in publications.
- Author
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Lautenschlager, Stephan
- Abstract
Copyright of Paläontologische Zeitschrift is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2014
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10. Visual data exploration for hydrological analysis.
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Rink, Karsten, Kalbacher, Thomas, and Kolditz, Olaf
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HYDROLOGICAL research ,THREE-dimensional imaging ,WATER supply management ,HYDROLOGIC models ,IMAGING systems ,WATER resources development - Abstract
Hydrological research projects for integrated water resources management such as the IWAS initiative often accumulate large amounts of heterogeneous data from different sources. Given the number of partners taking part in such projects, surveying and accessing the available data sets, as well as searching for a defined subset, becomes increasingly difficult. We propose an integrated approach for a system combining visual data management and numerical simulation which allows to survey and select data sets based on keywords such as a region of interest or given indicators. An adequate 3D visualisation of such subsets helps to convey information and significantly supports the assessment of relations between different types of data. Furthermore, the interface between the visual data management system and finite element codes allows for the straightforward integration of information into the numerical simulation process and the subsequent visualisation of simulation results in a geographical context. We demonstrate typical workflows for integration and processing within the system based on data from the IWAS model region in Saudi Arabia and the TERENO Bode Observatory in the Harz Mountains in Germany. In addition, we present examples for data import and export based on established standard file formats. [ABSTRACT FROM AUTHOR]
- Published
- 2012
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11. Three-dimensional imaging of the larynx for pre-operative planning of laryngeal framework surgery.
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Storck, Claudio, Juergens, Philipp, Fischer, Claude, Haenni, Olivia, Ebner, Franz, Wolfensberger, Markus, Sorantin, Erich, Friedrich, Gerhard, and Gugatschka, Markus
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LARYNGEAL surgery , *TOMOGRAPHY , *VOCAL cords , *BIOMECHANICS , *MEDICAL radiography - Abstract
Modern laryngeal framework surgery (LFS) requires an exact understanding of the laryngeal biomechanics and precise pre-operative planning, for which bi-planar imaging is not sufficient. The aim of the study was to test whether MIMICS®, a commercially available software package for three-dimensional (3D) rendering of high-resolution computerised tomography (HRCT), is suitable for 3D imaging of the larynx, analysis of laryngeal biomechanics and pre-operative planning. We examined four cadaver larynx and one patient larynx. In the five larynges, all relevant structures and landmarks could be 3D visualised. Superimposing of two HRCT scans shows that when the arytenoids move from ‘respiration’ to ‘phonation’, they perform a rotating, translating and tilting motion. Moreover, we could demonstrate that the vocal fold elongates by 7% with cricothyroid approximation. We conclude that MIMCS® is well suited for 3D imaging of the larynx, analysis of laryngeal biomechanics and pre-operative planning of LFS procedures. [ABSTRACT FROM AUTHOR]
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- 2010
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12. Individuelle Planung leberchirurgischer Eingriffe an einem virtuellen Modell der Leber und ihrer Leitstrukturen.
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Högemann, D., Stamm, G., Shin, H., Oldhafer, K. -J., Schlitt, H. J., Selle, D., and Peitgen, H. -O.
- Abstract
Copyright of Der Radiologe is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2000
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- View/download PDF
13. Computerised volumetric analysis of lesions in multiple sclerosis using new semi-automatic segmentation software.
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Dastidar, P., Heinonen, T., Vahvelainen, T., Elovaara, I., and Eskola, H.
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MULTIPLE sclerosis diagnosis ,BRAIN ,COMPUTER graphics ,DIGITAL image processing ,MAGNETIC resonance imaging - Abstract
The paper describes the application of new semi-automatic segmentation software to the task of detection of anatomical structures and lesion and their three-dimensional (3D) visualisation in 23 patients with secondary progressive multiple sclerosis (MS). The purpose is to study the correlation between magnetic resonance imaging (MRI) parameters (volumes of plaques and cerebrospinal fluid spaces) and clinical deficits (neurological deficits in the form of EDSS and RFSS scores, and neuropsychological deficits). The software operates in PC/Windows and PC/NeXTstep environments and utilises graphical user interfaces. Quantitative accuracy is measured by performing segmentation of fluid-filled syringes (relative error of 1.5%), and reproducibility is measured by intra- and inter-observer studies (3% and 7% variability, respectively). The mean volumes of MS plaques show significant correlations with the total RFSS scores (p = 0.04). Relative intracranial cerebrospinal fluid (CSF) space volumes show statistically significant correlation with EDSS scores (p = 0.01). The mean volume of MS plaques shows a significant correlation with the overall neuropsychological deficits (p = 0.03). 3D visualisation helps to understand the relationship of lesions to the surrounding brain structures. The use of semiautomatic segmentation techniques is recommended in the clinical diagnosis of MS patients. [ABSTRACT FROM AUTHOR]
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- 1999
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14. On the 3D Visualisation of Logical Relations.
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Smessaert, Hans
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The central aim of this paper is to present a Boolean algebraic approach to the classical Aristotelian Relations of Opposition, namely Contradiction and (Sub)contrariety, and to provide a 3D visualisation of those relations based on the geometrical properties of Platonic and Archimedean solids. In the first part we start from the standard Generalized Quantifier analysis of expressions for comparative quantification to build the Comparative Quantifier Algebra CQA. The underlying scalar structure allows us to define the Aristotelian relations in Boolean terms and to propose a 3D visualisation by transforming a cube into an octahedron. In part two, the architecture of the CQA is shown to carry over, both to the classical quantifiers of Predicate Calculus and to the modal operators—which are given a Generalized Quantifier style re-interpretation. In this way we provide an algebraic foundation for Blanché’s Aristotelian hexagon as well as a 3D alternative to his 2D star-like visualisation. In a final part, a richer scalar structure is argued to underly the realm of Modality, thus generalizing the 3D algebra with eight (2
3 ) operators to a 4D algebra with sixteen (24 ) operators. The visual representation of the latter structure involves a transformation of the hypercube to a rhombic dodecahedron. The resulting 3D visualisation allows a straightforward embedding, not only of the classical Blanché star of Aristotelian relations or the paracomplete and paraconsistent stars of Béziau (Log Investig 10, 218–232, 2003) but also of three additional isomorphic Aristotelian constellations. [ABSTRACT FROM AUTHOR]- Published
- 2009
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15. Geological modelling of mineral deposits for prediction in mining.
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Sides, E. J.
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Accurate prediction of the shape, location, size and properties of the solid rock materials to be extracted during mining is essential for reliable technical and financial planning. This is achieved through geological modelling of the three-dimensional (3D) shape and properties of the materials present in mineral deposits, and the presentation of results in a form which is accessible to mine planning engineers. In recent years the application of interactive graphics software, offering 3D database handling, modelling and visualisation, has greatly enhanced the options available for predicting the subsurface limits and characteristics of mineral deposits. A review of conventional 3D geological interpretation methods, and the model struc- tures and modelling methods used in reserve estimation and mine planning software packages, illustrates the importance of such approaches in the modern mining industry. Despite the widespread introduction and acceptance of computer hardware and software in mining applications, in recent years, there has been little fundamental change in the way in which geology is used in orebody modelling for predictive purposes. Selected areas of current research, aimed at tackling issues such as the use of orientation data, quantification of morphological differences, incorporation of geological age relationships, multi-resolution models and the application of virtual reality hardware and software, are discussed. [ABSTRACT FROM AUTHOR]
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- 1997
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16. Unveiling the invisible: mathematical methods for restoring and interpreting illuminated manuscripts.
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Calatroni, Luca, d’Autume, Marie, Hocking, Rob, Panayotova, Stella, Parisotto, Simone, Ricciardi, Paola, and Schönlieb, Carola-Bibiane
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ILLUMINATION of books & manuscripts , *DIGITAL image processing , *IMAGE reconstruction - Abstract
The last 50 years have seen an impressive development of mathematical methods for the analysis and processing of digital images, mostly in the context of photography, biomedical imaging and various forms of engineering. The arts have been mostly overlooked in this process, apart from a few exceptional works in the last 10 years. With the rapid emergence of digitisation in the arts, however, the arts domain is becoming increasingly receptive to digital image processing methods and the importance of paying attention to this therefore increases. In this paper we discuss a range of mathematical methods for digital image restoration and digital visualisation for illuminated manuscripts. The latter provide an interesting opportunity for digital manipulation because they traditionally remain physically untouched. At the same time they also serve as an example for the possibilities mathematics and digital restoration offer as a generic and objective toolkit for the arts. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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