scholarly journals Procesos de documentación arqueológica y generación de modelos virtuales

2011 ◽  
Vol 2 (3) ◽  
pp. 65 ◽  
Author(s):  
Josep Blasco Senabre ◽  
Sebastián Varea ◽  
Fernando Cotino Vila ◽  
Albert Ribera Lacomba ◽  
Oreto García Puchol
Keyword(s):  
Virtual Reality ◽  
Three Dimensional ◽  
3D Models ◽  
Present Communication ◽  
Archaeological Excavation ◽  
Great Range ◽  
The Times

<p>In the present communication we offer some examples that illustrate the methodological corpus applied by our company (Global S.L) in relation with the photogrametrical documentation and the virtual reality in the field of the archaeology. The use of these technologies of computerized documentation offers a great range of possibilities for the graphic documentation of an archaeological excavation, allowing to generate planimetry and pertinent sections and to improve the times in the process of obtaining of information. The possibility of producing 3D models supposes an essential addition to show in a three –dimensional way the current condition of the monument, as well as for its virtual recreation by means of the technologies of virtual reality and increased reality.</p>

3D Virtual Learning Environment for Engineering Students

2011 ◽  
pp. 42-52
Author(s):  
M. Valizadeh ◽  
B. Noroozi ◽  
G. A. Sorial
Keyword(s):  
Virtual Reality ◽  
Engineering Students ◽  
Three Dimensional ◽  
Virtual Learning ◽  
3D Models ◽  
Essential Elements ◽  
Virtual Learning Environment ◽  
Meaningful Context ◽  
3D Environments ◽  
Different Shapes

Virtual Reality and Virtual Learning Environments have become increasingly ambiguous terms in recent years because of essential elements facilitating a consistent environment for learners. Three-dimensional (3D) environments have the potential to position the learner within a meaningful context to a much greater extent than traditional interactive multimedia environments. The term 3D environment has been chosen to focus on a particular type of virtual environment that makes use of a 3D model. 3D models are very useful to make acquainted students with features of different shapes and objects, and can be particularly useful in teaching younger students different procedures and mechanisms for carrying out specific tasks. This chapter explains that 3D Virtual Reality is mature enough to be used for enhancing communication of ideas and concepts and stimulate the interest of students compared to 2D education.

Virtual Reality Angiogram vs 3-Dimensional Printed Angiogram as an Educational tool—A Comparative Study

Neurosurgery ◽  
2019 ◽  
Vol 85 (2) ◽  
pp. E343-E349 ◽  
Author(s):  
David Bairamian ◽  
Shinuo Liu ◽  
Behzad Eftekhar
Keyword(s):  
Virtual Reality ◽  
Depth Perception ◽  
3D Visualization ◽  
Three Dimensional ◽  
3D Models ◽  
Stereoscopic Depth ◽  
Educational Tool ◽  
Immersive Virtual Environment ◽  
3D Printed ◽  
Educational Potential

Abstract BACKGROUND Three-dimensional (3D) visualization of the neurovascular structures has helped preoperative surgical planning. 3D printed models and virtual reality (VR) devices are 2 options to improve 3D stereovision and stereoscopic depth perception of cerebrovascular anatomy for aneurysm surgery. OBJECTIVE To investigate and compare the practicality and potential of 3D printed and VR models in a neurosurgical education context. METHODS The VR angiogram was introduced through the development and testing of a VR smartphone app. Ten neurosurgical trainees from Australia and New Zealand participated in a 2-part interactive exercise using 3 3D printed and VR angiogram models followed by a questionnaire about their experience. In a separate exercise to investigate the learning curve effect on VR angiogram application, a qualified neurosurgeon was subjected to 15 exercises involving manipulating VR angiograms models. RESULTS VR angiogram outperformed 3D printed model in terms of resolution. It had statistically significant advantage in ability to zoom, resolution, ease of manipulation, model durability, and educational potential. VR angiogram had a higher questionnaire total score than 3D models. The 3D printed models had a statistically significant advantage in depth perception and ease of manipulation. The results were independent of trainee year level, sequence of the tests, or anatomy. CONCLUSION In selected cases with challenging cerebrovascular anatomy where stereoscopic depth perception is helpful, VR angiogram should be considered as a viable alternative to the 3D printed models for neurosurgical training and preoperative planning. An immersive virtual environment offers excellent resolution and ability to zoom, potentiating it as an untapped educational tool.

scholarly journals O74: ASSESSING THE USEFULNESS OF THREE-DIMENSIONAL IMAGING AND VIRTUAL REALITY IN SURGICAL PLANNING: A MEDICAL STUDENT LED PILOT STUDY

2021 ◽  
Vol 108 (Supplement_1) ◽  
Author(s):  
C Ryan ◽  
E O'Malley ◽  
D Sheppard
Keyword(s):  
Virtual Reality ◽  
Medical Student ◽  
Pilot Study ◽  
Surgical Planning ◽  
Three Dimensional ◽  
Surgical Techniques ◽  
3D Models ◽  
Bleeding Complications ◽  
Three Dimensional Imaging ◽  
Patient Counselling

Abstract Introduction Nephron-sparing surgery is becoming more common as surgical techniques advance. VR and 3D visualisation appear to provide better anatomical understanding in presurgical planning than two-dimensional alone. 3D models may enable greater tissue salvation and fewer complications. 3D model preparation and advancing research is expensive and time consuming. We aim to pilot study led by medical student, create reliable anatomical kidney models and assess usefulness in surgical planning. Method Routine CT urograms were performed on 128 slice scanner using split bolus technique. Medical student segmented and displayed models in VR using 3DSlicer. Radiology registrar and consultant validated models. Two urology surgeons completed qualitative questionnaires. Result We included two patients. Only minor segmentation tweaks by radiologist ensured accurately demonstrated tumors. Tissue contrast quality varied between CT scans complicating segmentation. Both surgeons deemed models helpful in visualising hilar anatomy, predicting bleeding complications, determining laparoscopic/open and partial/full nephrectomy approach. Surgeons prioritised vasculature visualisation over collecting system. Surgeons suggested gauging tumor depth would be useful. Considering 3D printing cost, surgeons agreed VR alone may suffice. Conclusion Surgeons found 3D and VR enabled accurate surgical planning and patient counselling regarding nephrectomy risk. Minor CT protocol recommendations enable easier and more accurate segmentation, without increasing patient's radiation exposure. Annual leave during 8-week summer project reflects case numbers. Since, we've identified more cases to assess surgical parameters against matched cohort. We've begun work for adrenal surgery. It's feasible for medical students with minimal surgical/radiological knowledge to advance this research, gaining valuable experience. Abbrev Virtual Reality(VR), Three-dimensional(3D), Computerised Tomography(CT) Take-home message Three-dimensional imaging and virtual reality may improve surgical planning and patient counselling. Regarding nephrectomy, this could give surgeons the confidence to convert from full nephrectomy to partial nephrectomy approach, improving patient outcome.

scholarly journals Exploration and analysis of molecularly annotated, 3D models of breast cancer at single-cell resolution using virtual reality

2021 ◽  
Author(s):  
Dario Bressan ◽  
Claire M Mulvey ◽  
Fatime Qosaj ◽  
Robert Becker ◽  
Flaminia Grimaldi ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Virtual Reality ◽  
Cancer Biology ◽  
Time Series Data ◽  
Three Dimensional ◽  
3D Models ◽  
Three Dimensions ◽  
Series Data ◽  
Spatially Resolved ◽  
Molecular Features

A set of increasingly powerful approaches are enabling spatially resolved measurements of growing numbers of molecular features in biological samples. While important insights can be derived from the two-dimensional data that many of these technologies generate, it is clear that extending these approaches into the third and fourth dimensions will magnify their impact. Realizing biological insights from datasets where thousands to millions of cells are annotated with tens to hundreds of parameters in space will require the development of new computational and visualization strategies. Here, we describe Theia, a virtual reality-based platform, which enables exploration and analysis of either volumetric or segmented, molecularly-annotated, three-dimensional datasets, with the option to extend the analysis to time-series data. We also describe our pipeline for generating annotated 3D models of breast cancer and supply several datasets to enable users to explore the utility of Theia for understanding cancer biology in three dimensions.

Virtual Reality Technology in Computer-Aided Production Engineering

2011 ◽  
pp. 562-565 ◽  
Author(s):  
Vladimír Modrák ◽  
Jozef Novák Marcincin
Keyword(s):  
Virtual Reality ◽  
Computer Games ◽  
Collaborative Work ◽  
Three Dimensional ◽  
3D Models ◽  
Virtual Reality Technology ◽  
Web Based ◽  
Flight Simulators ◽  
Internet Environment ◽  
Three Dimensional Models

After applications of virtual reality (VR) in the realm of flight simulators and computer games a need to exercise these technologies in industry is rising significantly. Nowadays one of the typical domains of using a virtual reality is designing and prototyping in automotive and air industry. A practical solution for a virtual model is using a virtual reality modeling language (VRML) that supports the distribution of three-dimensional models over the Internet. Web based virtual reality technology offers possibilities for sharing virtual models for supporting collaborative work and concurrent engineering. There are more standardized tools for virtual reality technology distributing 3D models by VRML. Another possible solution for exploiting an Internet environment through VRML is using a non-standard software package on PC basis created for 3D simulation and programming of automated workplaces, robots and other peripheral devices. The article is describing procedures for implementation of VRML 2.0 into software ROANS, which has been created in another programming language than VRML versions.

A Three-Dimensional Building Authoring Tool Based on Line Drawing Understanding

1996 ◽  
Vol 5 (1) ◽  
pp. 1-12
Author(s):  
Ming Ouhyoung ◽  
Yung-huei Yan
Keyword(s):  
Virtual Reality ◽  
Mechanical Design ◽  
Line Drawing ◽  
Three Dimensional ◽  
3D Models ◽  
Prototype System ◽  
Building Model ◽  
On Line ◽  
Line Slope ◽  
Constant Slope

Recently three-dimensional (3D) graphics has been applied in areas such as building and mechanical design, with the help of CAD tools to first construct the two-dimensional (2D) and 3D models. Building synthetic environments usually involves lots of work in constructing virtual reality worlds, and making authoring more efficient is one of the most important goals in virtual reality. We propose a prototype system that integrates several modules such as image preprocessing, vectorization, editing, and 3D model generation, to transform a 2D architecture design diagram into a 3D building model. We also propose an improved method that can efficiently recognize slant lines in addition to vertical and horizontal lines. To do this, since a line has a constant slope, we use back-tracking in our method and utilize a line slope consistency check to prune wrong targets.

Interactive Generation of Spatial Solutions for Manufacturing Systems by Means of Virtual Reality

2015 ◽  
Vol 791 ◽  
pp. 119-124
Author(s):  
Mikuláš Hajduk ◽  
Juraj Kováč
Keyword(s):  
Virtual Reality ◽  
Manufacturing Systems ◽  
Dimensional Space ◽  
Three Dimensional ◽  
3D Models ◽  
Virtual Manufacturing ◽  
Data Glove ◽  
Innovative Work ◽  
Virtual Manufacturing Environment ◽  
Three Dimensional Space

The contribution deals with the generation of interactive spatial solutions to manufacturing systems by means of virtual reality. It characterizes experimental work aimed at creating 3D models of manufacturing systems through technical and software resources of virtual reality. For innovative work is considered an example of data gloves in a virtual manufacturing environment. Data glove is used for placement of models means of production in manufacturing three-dimensional space.

Design of ROV Training Simulator

2011 ◽  
Vol 130-134 ◽  
pp. 170-174
Author(s):  
Xin Ge ◽  
Wei Guo ◽  
Zhi Yang Li
Keyword(s):  
Virtual Reality ◽  
Control System ◽  
Dynamic Simulation ◽  
Physical Simulation ◽  
Three Dimensional ◽  
Training Simulator ◽  
Virtual Reality Technology ◽  
Sea Trial ◽  
And Performance ◽  
The Times

Semi-physical simulation technology and virtual reality technology in real-time three-dimensional dynamic simulation of remote operated vehicle, and a set of real ROV control system are utilized to design a ROV Training Simulator. This ROV Training Simulator can not only be used to train ROV operators, reduce the times of sea trial,but also can verify the function and performance of real ROV control system.

scholarly journals Three-dimensional immersive virtual reality for studying cellular compartments in 3D models from EM preparations of neural tissues

2015 ◽  
Vol 524 (1) ◽  
pp. 23-38 ◽  
Author(s):  
Corrado Calì ◽  
Jumana Baghabra ◽  
Daniya J. Boges ◽  
Glendon R. Holst ◽  
Anna Kreshuk ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Three Dimensional ◽  
3D Models ◽  
Immersive Virtual Reality ◽  
Neural Tissues ◽  
Cellular Compartments

scholarly journals INTEGRATION OF THREE-DIMENSIONAL DIGITAL MODELS AND 3D GIS: THE DOCUMENTATION OF THE MEDIEVAL BURIALS OF AMITERNUM (L’AQUILA, ITALY)

2018 ◽  
Vol XLII-2 ◽  
pp. 1121-1128 ◽  
Author(s):  
I. Trizio ◽  
F. Savini ◽  
A. Giannangeli
Keyword(s):  
Three Dimensional ◽  
Digital Photogrammetry ◽  
3D Gis ◽  
Archaeological Excavation ◽  
Archaeological Heritage ◽  
Site Model ◽  
3D Data ◽  
Gis Environment ◽  
The Times ◽  
The University

This paper illustrates the results of an experimentation carried out by a multi-disciplinary research group made up of researchers from ITC-CNR of L'Aquila and of archaeologists of the University of L'Aquila. The research project carried out by the team is based on the analysis of the archaeological heritage (in particular, the documentation of some burials found in the medieval site of <i>Amiternum</i>, near L'Aquila). This starts from methods based on digital photogrammetric restitution, based on Structure from Motion (SfM) algorithms, and the generation of photorealistic textures in order to manage, in a 3D GIS environment, complex archaeological and anthropological data. The choice of technology to use is often determined by the specific needs of the survey, the purpose of the project, the budget and experience of the researchers, and the geometric characteristics of the assets, rather than the precision to be achieved. For the survey of the archaeological excavation of the medieval site of <i>Amiternum</i>, it was decided to use digital photogrammetry given that the objective was to document, with a rapid survey compatible with the times of an archaeological excavation the phases of image acquisition, processing and post processing of the site model. Furthermore, thanks to the integration of two technologies, digital photogrammetry and GIS, and the undisputed improvement in the management of 3D data by the GIS, three-dimensionality, in archeology in general, has become an indispensable component for site interpretation and for the documentation of the data.

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