共查询到19条相似文献,搜索用时 62 毫秒
1.
李凌 《电脑编程技巧与维护》2008,(15):112-113
分布式虚拟现实系统简称DVR,是虚拟现实系统的一种类型,它是基于网络的虚拟环境。在这个环境中,位于不同物理环境位置的多个用户或多个虚拟环境通过网络相连接,或者多个用户同时参加一个虚拟现实环境,通过计算机与其他用户进行交互,并共享信息。在分布式虚拟现实系统中,多个q用户可通过网络对同一虚拟世界进行观察和操作,以达到协同工作的目的。简单地说是指一个支持多人实时通过网络进行交互的软件系统,每个用户在一个虚拟现实环境中,通过计算机与其它用户进行交互,并共享信息。 相似文献
2.
3.
4.
虚拟现实技术及其应用 总被引:3,自引:0,他引:3
虚拟现实技术(Virtual Reality)是近年来发展起来的一门新兴的综合技术。本文概述了虚拟现实的特征与组成,更多地关注虚拟现实系统实现的关键技术,以及进一步的发展方向。最后,介绍了虚拟现实技术的应用领域。 相似文献
5.
6.
7.
本文主要介绍了分布式虚拟现实技术在高校虚拟实验室建设中的应用,以及使用VRML实现分布式虚拟实验室的设计过程。 相似文献
8.
王浩 《数字社区&智能家居》2013,(5):992-993
功能需求会在一定程度上增加系统重量、尺寸、能耗及通信复杂程度,借助模块化综合航空电子系统可以有效解决该问题。该文结合分布式综合模块化航空电子体系结构,依托于时间、空间分区以及带宽分区,提出网络分区概念,同时构建对应的网络模型、消息模型以及流量模型,并对实时性能进行分析和探讨。 相似文献
9.
10.
11.
Hyungki Hong 《Journal of the Society for Information Display》2022,30(4):335-343
The virtual image distance in an augmented reality (AR) or virtual reality (VR) device is an important factor in determining its performance. In this paper, a method for measuring the virtual image distance and its uniformity is proposed. The setup for measurement consists of a two-dimensional spatial sensor array on the translational stage and a pinhole array plate placed in front of the AR or VR device. As the distance between the pinhole plate and the two-dimensional spatial sensor array were changed, the positions of the rays through each pinhole were measured by a two-dimensional spatial sensor array. The ray trajectories through each pinhole were obtained by fitting these positions to straight lines. The relative distances between these ray trajectories were calculated with respect to the distance from the pinhole plate. This method is effective for measuring the uniformity, such as the azimuthal dependence of the virtual image distance or the dependence of the virtual image distance on the distance from the optical axis of the VR lens. 相似文献
12.
虚拟工厂现实场景系统平台设计与实现 总被引:1,自引:0,他引:1
随着现代化工业不断发展,模拟过程工业真实环境,并在此基础上进行地理信息显示与空间分析等成为当前的研究热点。构建基于虚拟现实(VR)和地理信息系统的(GIS)的虚拟工厂现实场景系统是进行工业生产仿真的一条有效途径,为此,设计开发一个三维的、可维护性强并具有一定扩展性的虚拟工厂现实场景系统具有重要的实用价值。本文通过数据准备、数据生成、系统扩展及客户端设计,实现了虚拟工厂现实场景系统开发过程。通过应用分析与对比,结果表明,该平台化系统具有更高的可扩展性且开发成本低,为虚拟工厂现实场景系统平台设计提供了一个良好的、可扩展的开发途径。 相似文献
13.
文章以虚拟现实 ( VR)系统为核心 ,综合利用全数字摄影测量系统、地理信息系统 ( GIS)和网络技术等 ,研究快速建立虚拟城市的技术和方法。通过这个方法 ,将虚拟现实作为一个开放系统和一门实用技术 ,为城市信息化提供一种可交互操作、集成化和人机和谐的方法 相似文献
14.
基于VRML-Java的网络虚拟现实的实现 总被引:9,自引:2,他引:9
受到网络速度的限制,传统的网页只能显示文本和图片等二维信息,而网络虚拟现实技术把交互的、逼真的虚拟三维场景引入网络.虚拟现实建模语言(VRML)是一种在互联网上构筑三维虚拟场景的语言标准,通过VRML脚本节点及Java小应用程序实现了用户与虚拟场景更好的交互,并通过Java数据库连接(JDBC),系统实现了三维场景与二维信息的集成. 相似文献
15.
Ralph Schroeder 《Virtual Reality》1995,1(1):33-39
This paper presents an overview of the uses of virtual reality in education. It draws particularly on three projects, the West Denton High School in Newcastle, the Human-Computer Interface Technology Laboratory's summer school in Seattle and the Shepard School for children with special needs in Nottingham. In each of these projects, there is distinctive relationship between the learning experience and the experience of virtual worlds. Here, the concern will not be with the pedagogical value of these projects, which have been documented elsewhere, but with the wider contribution that they can make to our understanding of virtual environments. To do this, it examines in each case how the virtual reality systems are integrated into the curriculum, how these systems relate to the learning process, the usability of the systems, and the possibilities and constraints of the virtual worlds. By comparing these with other emerging virtual reality applications, such as entertainment games, it can be seen that different systems present a variety of possibilities for constructing presence in, and interaction with, virtual environments. 相似文献
16.
基于船舶工程虚拟现实平台建设过程中的技术与应用问题提出相应的解决办法.介绍了作为船舶工程虚拟现实系统所应达到的功能要求,以及与船舶设计、制造的相关问题.对虚拟现实应用和船舶工程仿真有一定的参考价值. 相似文献
17.
A survey on virtual reality 总被引:2,自引:0,他引:2
QinPing Zhao 《中国科学F辑(英文版)》2009,52(3):348-400
Virtual reality (VR) is a scientific method and technology created during the exploration of the nature by human beings to
understand, simulate, and better adapt and use the nature. Based on the analysis on the whole process of VR, this paper presents
different categories of VR problems and a type of theoretical expression, and abstracts three kinds of scientific and technical
problems in VR field. On the basis of foresaid content, this paper also studies current major research objectives, research
results and development trend of VR in the aspects of VR modeling method, VR representation technology, human-machine interaction
and devices, VR development suites and supporting infrastructure, as well as VR applications. Finally, several theoretical
and technical problems that need to be further studied and solved are addressed.
Supported by the National Basic Research Program of China (Grant No. 2009CB320805), the National Natural Science Foundation
of China (Grant Nos. 60533070, 60503066), and the National High-Tech Research & Development Program of China (Grant Nos. 2006AA01Z333,
2006AA01Z311) 相似文献
18.
虚拟现实技术在工程设计与分析上有很大的应用潜力。可是 ,虚拟环境的创建时间长、成本高,极大地限制了虚拟现实技术在工程上的应用。为此 ,提出了虚拟现实脚本生成器的概念,将虚拟现实技术与过程的设计、分析集成化,创造性地提出了一种自上而下的设计方法———VR-IEDA,以便高效、快速地创建虚拟原型,提高计算机虚拟复杂系统工程的性价比。在 VR-IEDA中复杂系统的结构和行为被计算机捕捉并自动生成可执行的 VR仿真代码 ,从而减少了创建虚拟环境的时间,便利了基于仿真的过程分析和设计。最后 ,以武器系统的维修过程为 相似文献
19.
增强现实技术可以把计算机产生的虚拟物体或其它信息合成到用户看到的真实场景中.将增强现实技术与基于图像的绘制技术有机的结合起来,介绍了虚拟实景空间的构造,探讨了虚拟物体与实景空间的合成方法,给出了一种在虚拟实景空间中漫游的机制及其实现方法,综合考虑了机制的复杂度和漫游的自由度,在两者之间取得了平衡,该方法具有较好的实用性. 相似文献