三维虚拟数字校园系统的研究与实现

虚拟现实技术是一门新兴的跨学科新技术,应用领域广泛,效果显著。本文通过对校园漫游系统的实现,探讨了虚拟场景的建模和仿真驱动。着重讨论了虚拟建模与虚拟漫游的关键技术和方法。并结合浙江师范大学校园漫游系统和虚拟温州大学仿真系统,给出了两个具体的应用实例。提出了下一代智能VR模型。该技术特别适用于大中院校的官方网站上,房地产开发,建筑设计等各种实时模拟系统。     

沉浸式虚拟校园仿真系统开发及关键技术研究

虚拟现实技术可以给人带来身临其境之感,传统的虚拟现实系统大多采用桌面式虚拟现实方式,沉浸感不强,交互性差,不能让体验者沉浸在虚拟系统中。综合这些因素,文章根据三维虚拟校园仿真系统需求,设计实现了基于Unity3D平台的沉浸式虚拟校园漫游系统,并研究沉浸式虚拟校园开发中所使用的关键技术。实验表明,该系统能克服虚拟漫游沉浸感不足的缺点,用户可以体验到与真实校园相近的虚拟环境,并且可以与虚拟环境进行交互。该系统具有简单和易实现等特点,拥有广阔的应用前景。     

基于Virtools的工厂虚拟漫游系统的设计与实现

虚拟漫游系统的开发是虚拟现实技术的一个重要应用。以其虚拟仿真环境,采用3Ds Max进行工业中心建筑三维建模,做好纹理和贴图以后,结合Virtools虚拟现实开发平台,利用其building blocks脚本模块化和可视化流程图式脚本,设计并实现了对长沙航空职业技术学院的虚拟漫游。该虚拟漫游系统不但为用户提供了友好的Web界面,而且设计并实现了基于导航图控制的人机交互机制,便于综合使用多种漫游方式快速漫游校园的场景。     

多用户网络虚拟校园漫游系统的构建与研究

针对多用户网络虚拟校园漫游系统的难点问题,提出有效的优化解决措施,提高系统的真实感,实时性和交互性,主要研究了网络虚拟现实漫游系统开发的关键技术,包括图像数据收集与处理、三维数字建模、虚拟场景交互、网络传输等技术,结合海南师范大学的具体应用环境,构建了基于网络交互式的虚拟校园漫游系统.     

基于虚拟现实技术的场景交互漫游应用研究

2016年被称为"虚拟现实元年",国家对虚拟现实产业非常重视,虚拟现实领域的创业团队、投资团队呈爆发式增长,市场前景巨大.通过多年的教学和多项虚拟现实项目制作,分析了虚拟现实技术及其应用,研究虚拟场景交互漫游制作的关键技术、虚拟场景交互漫游的制作流程以及虚拟交互漫游系统的发布,总结出一些注意事项和要求.     

几何建模技术在虚拟校园漫游系统开发中的应用

虚拟漫游系统的开发是虚拟现实技术的一个重要应用.以华北电力大学保定二校区为虚拟仿真环境,使用3DSMAX建模工具对校园中的各种模型进行建模,使用多种基于几何建模的场景优化措施,并基于Google Earth卫星截图进行场景的精确布局设计.结合Virtools虚拟现实开发平台,设计了虚拟校园漫游系统的开发流程,并在微机平台上实现了一个场景复杂的校园实时漫游系统.该校园漫游系统不但为用户提供了友好的Web界面,而且设计并实现了基于导航图控制的人机交互机制,便于综合使用多种漫游方式快速漫游校园的场景.     

Creator／Vega Prime在船舶动力装置视景仿真系统中的应用

介绍了目前流行的视景仿真软件Creator和VegaPrime及其开发流程。介绍了进行三维建模过程中的纹理贴图技术和层次细节（LOD）技术等,利用VegaPrime实现了船舶虚拟机舱的漫游方法以及漫游过程中的碰撞检测技术等。开发出船舶机舱虚拟现实仿真系统,建立了逼真的船舶机舱虚拟场景,实现了人在虚拟机舱环境中的漫游,以及对虚拟场景中主要运动部件进行驱动。     

交互式自行车模拟器视景仿真系统开发

视景仿真系统是交互式自行车模拟器的重要组成部分。其给骑车者提供逼真的虚拟三维漫游场景。开发的视景仿真系统硬件上采用PowerWall虚拟现实系统，软件上基于自主开发的虚拟现实通用应用开发平台VR Flier，提高了开发的效率。VR Flier采用面向对象方法设计，能够全面地支持小同领域和不同规模的VR应用开发。视景仿真系统通过优化以及动态调度三维场景模型的方法提高了大范围漫游场景的渲染帧率；并对场景路面坡度及视景转向信号进行平滑处理，获得很好的视景仿真效果。     

基于VRML的虚拟场景漫游实现

虚拟场景漫游技术以虚拟现实技术为基础,具备自然模拟、体验逼真的特征.从构造校园虚拟场景漫游系统的一般流程出发,重点讨论了校园虚拟场景系统的虚拟漫游设计中视点的设置、校园大门的自动开关设置以及校园建筑物的旋转等关键技术,为VRML在三维建模、场景漫游、交互方式等技术验证提供一个的试验途径.     

基于MultiGen和Vega的城市场景仿真技术

虚拟现实技术是近几年来计算机图形学的研究热点.论文针对基于MultiGen Creator/Vega的虚拟场景仿真技术开展研究,介绍了三维视景仿真系统所涉及的关键技术、虚拟场景建模方法,以及在Vega软件环境中进行二次开发的技术,实现了虚拟场景中的视景漫游.实现结果表明,采用该技术可以满足视景仿真的实时要求.     

基于VEGA的数字城市漫游系统设计

基于vega开发平台，详细介绍了数字城市漫游系统的开发技术和具体的实现方法，着重讨论了系统漫游模式在实现过程中的技术细节。并阐述了相关的虚拟现实理论思想。     

Nanyang Technological University virtual campus [virtual reality project]

The idea for building a VR model of the NTU campus came about six years ago when the School of Computer Engineering purchased a powerful graphics workstation with advanced modeling software systems, MultiGen-Paradigm's MultiGen and Vega. Three-dimensional Web visualization developed rapidly. Personal computers became capable of making VR walkthroughs even in shared virtual worlds. Cybertown created by Tony Rockliff and Pascal Baudar with Virtual Reality Modeling Language (VRML) on the Blaxxun Platform, inspired us to put our virtual campus on the Web.     

Synchronization between audiovisual and haptic feeling for constructing edutainment systems

Virtual reality (VR) technology has become more and more mature over the last decade. Development of a virtual environment for training purpose is considered to be one of the most practical applications of the VR technology. Since the VR technology involves all kinds of sensors in exchanging information between the real world and the virtual environment, it is computationally intensive in terms of data processing at an individual sensor and information integration among all the sensors. In general, the information integration has to be well synchronized in order to meet the training needs. At the same time, real-time processing capability is also considered to be critical. Many more practical issues could be uncovered only when a virtual training environment is actually being developed. Based on this belief, this study experiments on the development of a virtual environment for training billiards players. The technical difficulties encountered and the corresponding resolutions are considered beneficial to the development of other practical virtual training environments. This paper summarizes the design and implementation details about our experimental virtual training environment for edutainment systems such as virtual billiard game, virtual air hockey game and virtual drum performance with the algorithms for the synchronization of the information from different sources.     

虚拟现实中的场景建模及模型优化技术

虚拟现实技术是一门综合性信息技术,它融合了数字图像处理、计算机图形学、多媒体技术、传感器技术等多个信息技术分支、从而大大推进了计算机技术的发展。针对桌面虚拟现实系统建模的研究,使得PC机上的W indow s用户也可按自己项目的需要来建模具有专业水平的VR。     

虚拟农业技术及其应用

计算机和信息技术对世界各地农业和农村发展发挥着重要的作用.虚拟农业技术将农业科学和信息技术、虚拟现实技术相结合,开辟了农业信息技术研究和应用的新途径.在给出了虚拟农业概念的基础上,分析了虚拟农业的组成、应用范围和发展方向.针对虚拟农业的一个典型应用--虚拟农作物,研究了虚拟农作物系统的结构,并采用植物三维重建法建立了虚拟农作物模型.     

基于Visual C#.NET与3DSTATE实现虚拟现实

虚拟现实技术在军事、航空航天、数字博物馆、虚拟人等领域得到了广泛的应用。但是,由于虚拟现实技术本身的复杂性,使得实现虚拟现实一直以来都是一项较为困难的工作。3DSTATE引擎是一种较新的虚拟现实开发工具,能快速和简便的实现基本的虚拟现实功能,在介绍3DSTATE引擎及3DWoddBuilder的基础上,着重讨论了Visual C#．NET与3DSTATE引擎相结合实现虚拟现实的方法和步骤。     

Effects of virtual presence and learning outcome using low-end virtual reality systems

Low-cost technology is essential to integrate Virtual Reality (VR) into educative institutions around the world. However, low-cost technology usually refers to low-end technology, which may compromise the level of immersion of the VR system. This study evaluates whether low-end and high-end VR systems achieve a comparable learning outcome regardless their immersion level. We also analyze the relationship between virtual presence and the learning outcome arising from a VR educational experience. An evaluation with 42 participants was conducted. We measured learning outcome and virtual presence under three different configurations, namely: a desktop computer, a low-end VR system, and a high-end VR system. The impact of simulator sickness was also analyzed. Results revealed a lower learning outcome in the less immersive configuration (i.e. desktop) and a similar learning outcome in both low-end and high-end VR systems. Even though low-end VR systems are less immersive and produce a lower level of virtual presence than high-end VR systems, the results support the use of low-end VR systems for educative applications.     

Virtual reality sports auxiliary training system based on embedded system and computer technology

Virtual Reality technology, the complex environment can be a simulated, traditional sports courses at the stadium, equipment, it is due to limitations such as safety, to provide scientific and accurate teaching and learning's, a complex by visualizing the theoretical knowledge in the abstract sport, you can get more technical knowledge. Compared to the traditional physical education activities, simulate sports scene only by generating VR panoramas that cannot be virtual reality technology. Based on this, you can improve the enthusiasm and athletic ability of students effectively. Because of immaturity and high-priced equipment of VR technology, at present, people that education is using unpopular making, carefully virtual reality technology. In this context, we can apply virtual reality technology to sports training, which can obtain more effective training effect. In the first part of this paper, we talk about the research of virtual reality panorama, the second part about the research of virtual reality video, the third part about the application of virtual reality in physical education teaching, and the fourth part is the conclusion and investigation process. In the study, VR, as a new technology, found that you have the prospect of a wide range of applications. As long as it has been used in scientific and rational, you can VR is to promote the level of improvement and sports greatly sports scene. Users can increase users' interest; it can be immersed in a variety of preset virtual locations. Therefore, in the VR device, which allows the user to improve the experience of the VR device, you can interact well in a virtual scene.     

多人网络虚拟现实儿童科普系统的设计研究

针对传统儿童科普教育存在的沉浸感薄弱、知识传输方式单一的问题,设计基于多人网络虚拟现实(VR)技术的儿童科普系统.系统的设计采用模块化的构建方式,主要分为网络联机模块和虚拟现实科普教育业务控制模块.在网络联机模块中,建立起服务器,教师机,学生机之间的信息通信,实现多人信息的加载和多人空间位置的实时同步.虚拟现实科普教育...     

基于虚拟现实的无时延感空间机器人遥控操作研究*

主要研究了克服空间机器人遥控操作时延问题的虚拟建模和仿真技术。首先概述了遥操作时延问题的研究现状;然后提出了一种基于虚拟现实预显示技术解决时延问题的方案;最后开发了基于虚拟现实的无时延感的遥控操作系统,并进行了仿真实验研究。仿真结果表明,虚拟现实技术在有效克服空间机器人遥控操作大时延中发挥了重要作用。