Methods of interactive modeling andvisualization of functionally defined objects using a web browser using HTML5 andwebGL are proposed. An application for high-realism models is developed, which is able to work with...
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Methods of interactive modeling andvisualization of functionally defined objects using a web browser using HTML5 andwebGL are proposed. An application for high-realism models is developed, which is able to work with an interactive frame rate in real time. The user will be able to instantly change the appearance of the data by manipulating various display properties available through the user interface on the screen. Functional descriptions of objects that allow determining time-dependent geometric shapes, the appearance, and transformations using perturbation functions are proposed and implemented.
Archaeological collections are crucial in heritage studies and are used every day for training archaeologists and cultural heritage specialists. The recent developments in 3d acquisition andvisualization technology h...
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Archaeological collections are crucial in heritage studies and are used every day for training archaeologists and cultural heritage specialists. The recent developments in 3d acquisition andvisualization technology has contributed to the rapid emergence of a large number of 3d collections, whose production is often justified as the democratization of data and knowledge production. despite the fact that several 3ddatasets are now available online, it is not always clear how the data - once stored - may be engaged by archaeology students, and the possible challenges the students may face in the learning process. The goal of the dynamic Collections project at Lund University is to develop a novel 3dweb infrastructure designed to support higher education and research in archaeology. At the onset of the COVId-19 pandemic in the spring of 2020, all teaching at Lund University moved online, reinforcing the urgency for such an infrastructure. By letting a group of students test an early version of the systemas part of their online teaching, we were able to study how they used and interacted with an archaeological collection in 3d and explore the intersection of digital methods and pedagogy in archaeology. This article presents the preliminary results from this experiment.
Beamtime and resulting SR mu CT data are a valuable resource for researchers of a broad scientific community in life sciences. Most research groups, however, are only interested in a specific organ and use only a frac...
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ISBN:
(纸本)9781510612402;9781510612396
Beamtime and resulting SR mu CT data are a valuable resource for researchers of a broad scientific community in life sciences. Most research groups, however, are only interested in a specific organ and use only a fraction of their data. The rest of the data usually remains untapped. By using a new collaborative approach, the NOVA project ( Network for Online visualization and synergistic Analysis of tomographic data) aims to demonstrate, that more efficient use of the valuable beam time is possible by coordinated research on different organ systems. The biological partners in the project cover different scientific aspects and thus serve as model community for the collaborative approach. As proof of principle, different aspects of insect head morphology will be investigated (e.g., biomechanics of the mouthparts, and neurobiology with the topology of sensory areas). This effort is accomplished by development of advanced analysis tools for the ever-increasing quantity of tomographic datasets. In the preceding project ASTOR, we already successfully demonstrated considerable progress in semi-automatic segmentation and classification of internal structures. Further improvement of these methods is essential for an efficient use of beam time and will be refined in the current NOVA-project. Significant enhancements are also planned at PETRA III beamline p05 to provide all possible contrast modalities in x-ray imaging optimized to biological samples, on the reconstruction algorithms, and the tools for subsequent analyses and management of the data. All improvements made on key technologies within this project will in the long-term be equally beneficial for all users of tomography instrumentations.
We seek to further expand X3d by augmenting it with function-baseddefinitions of geometry, appearance and tangible physical properties. Besides using alone, the introduced nodes can augment and enrich the standard X3...
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ISBN:
(纸本)9781605584324
We seek to further expand X3d by augmenting it with function-baseddefinitions of geometry, appearance and tangible physical properties. Besides using alone, the introduced nodes can augment and enrich the standard X3d shapes by function-defined geometry, appearance and tangible physical properties. These new virtual objects can be explored haptically with various desktop force-feedback devices. We also propose a general visual and haptic collaborative framework for using it with X3d. We implement it as new pilot versions of BS Collaborate server and BS Contact VRML/X3d viewer. In our collaborative framework, two pipelines---visual and haptic---complement each other to provide a simple and efficient solution to problems requiring collaboration in shared virtual spaces on the web.
Animated shape transformations should be an intrinsic part of visual cyberworlds. However, quite often only limited animation of the polygon-based shapes can be found there, specifically when using the virtual reality...
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Animated shape transformations should be an intrinsic part of visual cyberworlds. However, quite often only limited animation of the polygon-based shapes can be found there, specifically when using the virtual reality modeling language (VRML) and its successor extensible 3d (X3d). This greatly limits the expressive power of visual cyberworlds and has motivated our research in this direction. In this paper, we present function-based extensions of VRML and X3d, which allow for time-dependent shape modeling on the web. Our shape modeling approach is based on the concurrent use of implicit, explicit and parametric functions defining geometry, appearance and their transformations through time. The functions are typed straight in VRML/X3d code as individual formulas and as function scripts. We have also developed a web enabled interactive software tool for modeling function-based VRML/X3d objects.
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