In this paper we report on a new system to enhance a 3D block model of a real city with terrestrial measured data of the facades. The terrestrial data consists of photographs taken by a hand-held digital consumer came...
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The usability of three-dimensional (3D) interaction techniques depends upon both the interface software and the physical devices used. However, little research has addressed the issue of mapping 3D input devices to in...
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The effect of field-of-view, display type and user role on the experience of simulator sickness and presence in users of a virtual environment was investigated. A PC based assessment instrument was created to administ...
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ISBN:
(纸本)1581134541
The effect of field-of-view, display type and user role on the experience of simulator sickness and presence in users of a virtual environment was investigated. A PC based assessment instrument was created to administer the Presence, Immersive Tendencies and Simulator Sickness questionnaires. The field-of-view was found to be the major determinant of both simulator sickness and presence.
The current state of the art in visualization research places a strong emphasis on different techniques to derive insight from disparate types of data. However, little work has investigated the visualization process i...
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The current state of the art in visualization research places a strong emphasis on different techniques to derive insight from disparate types of data. However, little work has investigated the visualization process itself. The information content of the visualization process-the results, history, and relationships between those results-is addressed by this work. A characterization of the visualization process is discussed, leading to a general model of the visualization exploration process. The model, based upon a new parameter derivation calculus, can be used for automated reporting, analysis, or visualized directly. An XML-based language for expressing visualization sessions using the model is also described. These sessions can then be shared and reused by collaborators. The model, along with the XML representation, provides an effective means to utilize the information within the visualization process to further data exploration.
作者：
R. HinnB. RedmerG. DomikComput. Sci.
Comput. Graphics Visualization & Image Process. Paderborn Univ. Germany Computer Science
Computer Graphics Visualizatioii and hnage Processing University of Paderborn Germany
AR-Campus is an augmented reality application, designed as a guide through university campus. it offers a 3-D map of the campus area, shows routes to various buildings and offices, and recognizes name tags of universi...
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AR-Campus is an augmented reality application, designed as a guide through university campus. it offers a 3-D map of the campus area, shows routes to various buildings and offices, and recognizes name tags of university staff to offer additional information like email addresses, office hours and office location.
The work presented here describes two methods to incorporate viable illumination models into Fourier Volume Rendering (FVR). The lack of adequate illumination has been one of the impediments for the wide spread accept...
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The work presented here describes two methods to incorporate viable illumination models into Fourier Volume Rendering (FVR). The lack of adequate illumination has been one of the impediments for the wide spread acceptance of FVR. Our first method adapts the Gamma Corrected Hemispherical Shading (GCHS) proposed by Scoggins et al. (2001) for FVR. We achieve interactive rendering for constant diffusive light sources. Our second method operates on data transformed by spherical harmonic functions. This latter approach allows for illumination under varying light directions. It should be noted that we only consider diffuse lighting in this paper. We demonstrate and compare the effect of these two new models on the rendered image and document speed and accuracy improvements.
The proper usage and creation of transfer functions for time-varying data sets is an often ignored problem in volume visualization. Although methods and guidelines exist for time-invariant data, little formal study fo...
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In this paper, we present a system developed for getting additional information from real time video hyperlinks within a live video. It is realized by introducing markers in the scene, which can be detected by the sys...
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ISBN:
(纸本)9608052440
In this paper, we present a system developed for getting additional information from real time video hyperlinks within a live video. It is realized by introducing markers in the scene, which can be detected by the system itself. The primary advantage of the system is the generation of real time video hyperlinks by the video content itself. The system uses optical markers to link the additional information to the object of interest. Any retrieval of additional information is initialized by a user request. Finally, a first system prototype demonstrates the validity of this approach and shows the potential of this application.
Based on the technological progress within the Internet, content like digital video has become more and more popular for any kind of user. Because of these new technologies a merging process of different media types h...
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ISBN:
(纸本)9608052440
Based on the technological progress within the Internet, content like digital video has become more and more popular for any kind of user. Because of these new technologies a merging process of different media types has been started which leads to new kinds of applications. Within this paper such a new application is presented based on an interactive video system for the area of E-commerce. hi order to be competitive as an e-shop provider on the market it is highly important to supply the customers with an recognizable added value concerning the presentation of the product line. The embedding of such a system for using an interactive video in the context of E-commerce is the main focus of this work.
The inner city (Old Town) of Graz will be the European cultural capital in 2003. In this paper we present preliminary results on the reconstruction and visualization of this kind of cultural heritage data. Starting wi...
ISBN:
(纸本)9781581134476
The inner city (Old Town) of Graz will be the European cultural capital in 2003. In this paper we present preliminary results on the reconstruction and visualization of this kind of cultural heritage data. Starting with a simple block model obtained by converting 2 1/2 dimensional GIS (geographic information system) data we focus on the image based modeling of the facades. Herein we illustrate a robust search for corresponding points to estimate the relative orientation between image ***, we outline our real-time rendering approach based on a LOD-R-tree concept. Special attention is paid on the LOD (level of detail) generation for historic buildings where two different ways working in 2D and 3D are explained. The visualization system is communicating asynchronously with a database system storing the LOD-R-tree data structure. This client-server configuration provides interactive navigation through the virtual scene and the scalability of a database management system.
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