Computer Vision-based natural feature tracking is at the core of modern Augmented Reality applications. Still, web-based Augmented Reality typically relies on location-based sensing (using GPS and orientation sensors)...
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ISBN:
(纸本)9781450358002
Computer Vision-based natural feature tracking is at the core of modern Augmented Reality applications. Still, web-based Augmented Reality typically relies on location-based sensing (using GPS and orientation sensors) or marker-based approaches to solve the pose estimation problem. We present an implementation and evaluation of an efficient natural feature tracking pipeline for standardweb browsers using HTML5 andwebAssembly. Our system can track image targets at real-time frame rates tablet PCs (up to 60 Hz) and smartphones (up to 25 Hz).
Within this paper, we present a novel 3dweb architecture style which allows to build format-agnostic 3d model graphs on the basis of ReSTful principles. We generalize the abstract definitions of RFC 2077 and allow to...
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ISBN:
(纸本)9781450358002
Within this paper, we present a novel 3dweb architecture style which allows to build format-agnostic 3d model graphs on the basis of ReSTful principles. We generalize the abstract definitions of RFC 2077 and allow to compose models and model fractions while transferring the "Media Selection URI" to a new domain. We present a best practice subset of HTTP/HTTPS and ReST to model authorization, data change, and content format negation within a single efficient request. This allows implementations to handle massive graphs with hybrid format configurations on the very efficient HTTP transport layer, without further application intervention. The system should be attractive to platform and service providers aiming to increase their ability to build3ddata application mashups with a much higher level of interoperability. We also hope to inspire standardization organizations to link generic "model/*" formats to RFC 2077 defined semantics like "compose".
The paper(1) presents development and test procedure of two Virtual Reality systems for training of skills necessary in a modern production company. The two systems allow teaching hard skills (example: forklift operat...
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ISBN:
(纸本)9781450358002
The paper(1) presents development and test procedure of two Virtual Reality systems for training of skills necessary in a modern production company. The two systems allow teaching hard skills (example: forklift operation) and soft skills (example: quality management tools). Basic ideas, concepts of the virtual courses and their test procedure is presented, along with obtained results.
Poznan Supercomputing and Networking Services (PSNC) offers advanced visualisation and multimedia infrastructures as a set of dedicated laboratories to conduct innovative research anddevelopment projects involving bo...
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ISBN:
(纸本)9781450358002
Poznan Supercomputing and Networking Services (PSNC) offers advanced visualisation and multimedia infrastructures as a set of dedicated laboratories to conduct innovative research anddevelopment projects involving both academia and industry. In this short overview we present the existing facilities located at the PSNC campus in Poznan, Poland as well as short descriptions of example applications and networked services which have been recently developed.
Collaborative engineering design is a time-consuming process because the collaborative partners are spatially distant and familiar with divergent software solutions due to their local circumstances. The data compatibi...
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ISBN:
(纸本)9781450358002
Collaborative engineering design is a time-consuming process because the collaborative partners are spatially distant and familiar with divergent software solutions due to their local circumstances. The data compatibility problem rises between collaborating groups because each group uses a particular software solution that is different from other groups. A platform independent web-based solution for collaborative CAd system, that supports files of multiple CAd systems as well, has been implemented in this paper. The implemented solution saves time by providing web-based editing and visualization and preserves the design intent that makes it reusable.
Virtual Reality provides a unique opportunity to improve modern production planning processes. Using the first-person perspective and users body as the source of realistic constrains, any user can experience the desig...
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ISBN:
(纸本)9781450358002
Virtual Reality provides a unique opportunity to improve modern production planning processes. Using the first-person perspective and users body as the source of realistic constrains, any user can experience the design challenges at a given workstation. By grounding VR User Experience design in embodiment theories, we propose a new paradigm of human-in-the-loop for production planning. We call it Embodied Engineering (EE).
Interactive 3d content gains increasing use in VR/AR applications in different domains, such as education, training, engineering, spatial and urban planning as well as architectural and interior design. While modeling...
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ISBN:
(纸本)9781450358002
Interactive 3d content gains increasing use in VR/AR applications in different domains, such as education, training, engineering, spatial and urban planning as well as architectural and interior design. While modeling and presenting interactive 3d scenes in collaborative VR/AR environments, different 3d objects are added, modified and removed by different users, which leads to the evolution of the scenes over time. Representation of VR content covering temporal knowledge is essential to enable exploration of such time-dependent VR/AR content. However, the available approaches do not enable exploration of VR content with regards to its time-dependent components and properties, which limits their usage in web-based systems. The main contribution of this paper is 4-dimensional representation of VR content, which encompasses time being the fourth dimension. The representation is based on the semantic web standards and ontologies, which enable the use of domain knowledge for collaborative creation and exploration of content. This could improve the availability of VR/AR applications to domain specialists without expertise in 3d graphics and animation, thus improving the overall dissemination of VR/AR on the web. The representation has been implemented in a heterogeneous collaborative VR environment for urban design.
Current shared worlds for games, simulations, AR, and VR rely on "good-enough" intuitively correct depictions of shared world state. This is inadequate to provide repeatable, verifiable results for decision-...
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ISBN:
(纸本)9781450358002
Current shared worlds for games, simulations, AR, and VR rely on "good-enough" intuitively correct depictions of shared world state. This is inadequate to provide repeatable, verifiable results for decision-making, safety related/equipment-in-the-loop simulations, or distributed multi-user augmented reality. These require world representations which are physically correct to a designer-defined level of fidelity and produce repeatable, verifiable results. A network-distributeddynamic simulation architecture as illustrated in Figure 1 is presented, with consistent distributed state and selective level of physics-based fidelity with known bounds on transient durations when state diverges due to external input. Coherent dynamic state has previously been considered impossible.
Animations aid greatly to a presentation of a sophisticated man-made object. With additional interactivity, a user can explore such an object to gain even better understanding. The authoring of such dynamic models is ...
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ISBN:
(纸本)9781450358002
Animations aid greatly to a presentation of a sophisticated man-made object. With additional interactivity, a user can explore such an object to gain even better understanding. The authoring of such dynamic models is often very resource demanding, as the animations and logic of interaction has to be expressed in an authoring program;often using a programming language. Furthermore, the 3d model and its dynamic capabilites are tightly coupled, which makes it costly to integrate changes of the underlying 3d model - e.g. if a machine part changes. Contribution and Benefit. We present a novel scheme to define varying states of a 3d model in a decoupled, declarative manner using pattern matching. Furthermore, we demonstrate its capabilites for the web with an open source JavaScript implementation that operates on an x3dom model.
In this paper, we present an architecture for distributed augmented reality (AR) services. The presented architecture is based on a client-server design, which supports semantic modeling and building contextual AR pre...
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ISBN:
(纸本)9781450358002
In this paper, we present an architecture for distributed augmented reality (AR) services. The presented architecture is based on a client-server design, which supports semantic modeling and building contextual AR presentations for a large number of users. It encompasses two approaches: SOA and CARE. The Service-Oriented Architecture enables building distributed systems that provide application functionality as services to either end-user applications or other services. In turn, CARE allows semantic modeling of AR environments, which combined with SOA enables dividing responsibility between loosely coupled semantic services distributed on the internet. We also provide the results of an experimental evaluation of the performance of a prototype based on the above-mentioned architecture. The findings are promising anddemonstrate that an application of semanticweb techniques can be an effective approach to implementation of large-scale contextual distributed AR services.
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