International Conference on Artificial Reality and Telexistence and Eurographics Symposium on Virtual Environments最新文献

Optical magic lenses and polarization-based interaction techniques 光学魔法透镜和基于偏振的交互技术

International Conference on Artificial Reality and Telexistence and Eurographics Symposium on Virtual Environments Pub Date : 2007-07-15 DOI: 10.2312/EGVE/IPT_EGVE2007/061-068

Manuela Waldner, M. Kalkusch, D. Schmalstieg

引用次数: 4

Using time-of-flight range data for occlusion handling in augmented reality 在增强现实中使用飞行时间距离数据进行遮挡处理

International Conference on Artificial Reality and Telexistence and Eurographics Symposium on Virtual Environments Pub Date : 2007-07-15 DOI: 10.2312/EGVE/IPT_EGVE2007/109-116

J. Fischer, B. Huhle, A. Schilling

{"title":"Using time-of-flight range data for occlusion handling in augmented reality","authors":"J. Fischer, B. Huhle, A. Schilling","doi":"10.2312/EGVE/IPT_EGVE2007/109-116","DOIUrl":"https://doi.org/10.2312/EGVE/IPT_EGVE2007/109-116","url":null,"abstract":"One of the main problems of monoscopic video see-through augmented reality (AR) is the lack of reliable depth information. This makes it difficult to correctly represent complex spatial interactions between real and virtual objects, e.g., when rendering shadows. The most obvious graphical artifact is the incorrect display of the occlusion of virtual models by real objects. Since the graphical models are rendered opaquely over the camera image, they always appear to occlude all objects in the real environment, regardless of the actual spatial relationship. In this paper, we propose to utilize a new type of hardware in order to solve some of the basic challenges of AR rendering. We introduce a depth-of-flight range sensor into AR, which produces a 2D map of the distances to real objects in the environment. The distance map is registered with high resolution color images delivered by a digital video camera. When displaying the virtual models in AR, the distance map is used in order to decide whether the camera image or the virtual object is visible at any position. This way, the occlusion of virtual models by real objects can be correctly represented. Preliminary results obtained with our approach show that a useful occlusion handling based on time-of-flight range data is possible.","PeriodicalId":210571,"journal":{"name":"International Conference on Artificial Reality and Telexistence and Eurographics Symposium on Virtual Environments","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130780226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 40

A GPU-based framework of photometric uniformity for multi-projector tiled display 基于gpu的多投影机平铺显示光度均匀性框架

International Conference on Artificial Reality and Telexistence and Eurographics Symposium on Virtual Environments Pub Date : 2007-07-15 DOI: 10.2312/EGVE/IPT_EGVE2007/077-083

Guodong Yuan, K. Qin

引用次数: 1

High ecological validity and accurate stimulus control in VR-based psychological experiments 基于vr的心理实验的高生态效度和准确刺激控制

International Conference on Artificial Reality and Telexistence and Eurographics Symposium on Virtual Environments Pub Date : 2007-07-15 DOI: 10.2312/EGVE/IPT_EGVE2007/025-032

M. Wolter, C. Armbrüster, Jakob T. Valvoda, T. Kuhlen

引用次数: 11

Supervision of task-oriented multimodal rendering for VR applications 监督面向任务的VR应用多模态渲染

International Conference on Artificial Reality and Telexistence and Eurographics Symposium on Virtual Environments Pub Date : 2007-07-15 DOI: 10.2312/EGVE/IPT_EGVE2007/093-100

Guillaume Bouyer, P. Bourdot, M. Ammi

引用次数: 10

Visual consistency in rotational manipulation tasks in sheared-perceived virtual environments 剪切感知虚拟环境中旋转操作任务的视觉一致性

International Conference on Artificial Reality and Telexistence and Eurographics Symposium on Virtual Environments Pub Date : 2007-07-15 DOI: 10.2312/EGVE/IPT_EGVE2007/033-042

M. Koutek, R. Molenaar, G. D. Haan, F. Post

{"title":"Visual consistency in rotational manipulation tasks in sheared-perceived virtual environments","authors":"M. Koutek, R. Molenaar, G. D. Haan, F. Post","doi":"10.2312/EGVE/IPT_EGVE2007/033-042","DOIUrl":"https://doi.org/10.2312/EGVE/IPT_EGVE2007/033-042","url":null,"abstract":"Sharing one large screen projection display, such as the Virtual Workbench, with multiple users can cause distortions in viewing and interaction, as the users perceive a sheared and moving space. Generally, object rotation in non-orthogonal, sheared coordinate spaces is something that should be avoided as it consequently invalidates homogeneous geometric object transformations. Although this problem seems to be artificial, in shared multiple-user VR this issue gets a real, substantial flavor. It is typically a problem for the \"secondary\" users viewing and interacting with a VR system. Due to rendering the scene from a different viewpoint, they perceive several distortions in the stereo image, one of which is that the VE appears to be sheared. This is also the case in our affordable approach to a multiple user VR Workbench. In this paper we describe technical aspects of our novel viewpoint compensation method to make the object selection, translation, and rotation consistent with the (secondary) user's view of the scene. We focus on description of object rotation inside sheared VE's. We demonstrate that our techniques ensure a sense of interaction consistency despite the view distortions.","PeriodicalId":210571,"journal":{"name":"International Conference on Artificial Reality and Telexistence and Eurographics Symposium on Virtual Environments","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122606534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

PDRIVE: the projector-based, desktop, reach-in virtual environment PDRIVE:基于投影仪、桌面、可及式的虚拟环境

International Conference on Artificial Reality and Telexistence and Eurographics Symposium on Virtual Environments Pub Date : 2007-07-15 DOI: 10.2312/EGVE/IPT_EGVE2007/009-016

G. D. Haan, E. J. Griffith, M. Koutek, F. Post

引用次数: 5

Adaptive classifier system-based dead reckoning 基于自适应分类器系统的航位推算

International Conference on Artificial Reality and Telexistence and Eurographics Symposium on Virtual Environments Pub Date : 2007-07-15 DOI: 10.2312/EGVE/IPT_EGVE2007/101-108

S. Torki, P. Torguet, C. Sanza

{"title":"Adaptive classifier system-based dead reckoning","authors":"S. Torki, P. Torguet, C. Sanza","doi":"10.2312/EGVE/IPT_EGVE2007/101-108","DOIUrl":"https://doi.org/10.2312/EGVE/IPT_EGVE2007/101-108","url":null,"abstract":"Most dead reckoning implementations are based on DIS' specifications and only use a single prediction model during the whole simulation. However, several studies manage to improve dead reckoning's performance by defining prediction model selection strategies. Nevertheless, these approaches are either too generic and based on empirical results or too specific and only have few fields of application.\u0000 This paper presents our approach that is meant to determine, among a set of extrapolation models, the one to apply in any given situation. It is based on classifier systems, adaptive evolutionary systems that are more generally involved to create artificial creatures in the field of \"artificial life\".\u0000 Using such systems enable us to define a general model that can generate simulation-specific rules with relatively little work. Indeed, they just require defining the parameters that have to be taken into account and the criteria to optimize (e.g. accuracy, amount of updates...). Then, the system makes a set of rules emerge through a trial/error process in order to define more efficient and finer prediction model selection strategies.","PeriodicalId":210571,"journal":{"name":"International Conference on Artificial Reality and Telexistence and Eurographics Symposium on Virtual Environments","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129623026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Interactive exploration of large data in hybrid visualization environments 混合可视化环境中大数据的交互式探索

International Conference on Artificial Reality and Telexistence and Eurographics Symposium on Virtual Environments Pub Date : 2007-07-15 DOI: 10.2312/EGVE/IPT_EGVE2007/069-076

M. Schirski, C. Bischof, T. Kuhlen

{"title":"Interactive exploration of large data in hybrid visualization environments","authors":"M. Schirski, C. Bischof, T. Kuhlen","doi":"10.2312/EGVE/IPT_EGVE2007/069-076","DOIUrl":"https://doi.org/10.2312/EGVE/IPT_EGVE2007/069-076","url":null,"abstract":"With rising data sizes and growing complexity, the results of modern numerical simulations are increasingly dif- ficult to understand. Thus, using Virtual Reality methodology for an interactive analysis of such data gains more and more importance. However, interaction within virtual environments comes at the cost of real-time constraints, which are difficult to meet. Using a hybrid visualization environment consisting of a high-performance computing (HPC) system connected to a graphics workstation (or multiple rendering nodes) we propose a workload distribution which significantly increases interactivity during the data analysis process. Based on a novel model of the exploration process, we introduce an additional step into the conventional visualization pipeline before mapping the whole process onto system components. This incorporates the respective benefits of high-performance computing and GPU-based computation into a single visualization framework. Basically, by coupling an HPC-based extraction of a region-of-interest to GPU-based flow visualization, an interactive analysis of large datasets is made possible. Taking interactive particle tracing and volume rendering as examples, we show the applicability of our approach to an interactive exploration of datasets exceeding the memory limits of a single workstation.","PeriodicalId":210571,"journal":{"name":"International Conference on Artificial Reality and Telexistence and Eurographics Symposium on Virtual Environments","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126240181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Spinnstube®: a seated augmented reality display system Spinnstube®:一个坐式增强现实显示系统

International Conference on Artificial Reality and Telexistence and Eurographics Symposium on Virtual Environments Pub Date : 2007-07-15 DOI: 10.2312/EGVE/IPT_EGVE2007/017-023

Jürgen Wind, Kai Riege, M. Bogen

引用次数: 23