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基于VRML-Java的网络虚拟现实的实现 总被引:11,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
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三维建模和虚拟现实技术都是近些年来随着计算机图形学的发展而日渐成熟的新兴技术,基于互联网的虚拟现实技术已经越来越成为计算机图形学领域的新课题之一。如今应用在三维建模类的软件种类繁多,不同的软件功能也各具特色。为了快速实现三维模型建立并实现网络浏览,可根据3DS MAX提供的可视的三维建模能力,以及VRML虚拟现实三维立体网络程序语言,构造虚拟场景并实现用户与虚拟场景的网络浏览。介绍了3DS MAX与VRML语言的相关技术特点,并通过实例使用3DS MAX和VRML语言进行建模,实现虚拟交互的快捷方法。通过对VRML与3DS MAX建模的互补研究,解决了快速建模并实现虚拟场景的网络浏览。 相似文献
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席桂花 《数字社区&智能家居》2009,(30)
虚拟现实应用越来越广泛。VRML是用于描述交互式三维空间的虚拟现实建模语言。该文提出了一种基于SketchUp和VRML技术虚拟漫游系统的开发方法,即用SketchUp构建三维模型,用VRML语言实现场景漫游的交互控制,从而设计与实现一个三维虚拟漫游系统。 相似文献
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虚拟现实建模语言(VRML)是描述虚拟场景的一种标准,获得了广泛的应用.介绍了一个利用虚拟现实技术实现对逆变电源模块进行监控的系统,对VRML与外界的通信方式以及与数据库的连接进行了研究.利用VRML构建了具有良好交互性的三维场景,并利用Java和VRML通信,实现了场景从数据库中实时获取电源状态参数,在此基础上完成了来自逆变电源的动态数据与虚拟三维模型的动态交互,实现了通过虚拟电源控制柜对逆变电源模块的开启和关闭、电源设备运行数据的实时显示. 相似文献
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机械移位系统虚拟现实动态仿真研究 总被引:3,自引:0,他引:3
该文介绍了用VRML语言来设计弹簧-质量-阻尼器机械移位系统的各个组成部分,在VRML编辑器V-Realm Builder2.0环境下构成弹簧-质量-阻尼器机械移位系统虚拟现实世界,并在MATLAB环境下利用MATLAB虚拟现实接口及接口函数对虚拟现实世界中的机械移位系统中的参数进行交互式设置,实现虚拟动态系统仿真。设计出来的机械移位系统虚拟动态仿真形象逼真,具有很好的交互性。 相似文献
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高德勇 《自动化与仪器仪表》2011,(5):168-169,172
对变互式虚拟现实系统的州论与技术进行了研究。理论研究主要针对二维数据存数捌席中的存储、二维坐标的对应算法及虚拟现实交互式技术的应用。存WEB环境下,能够创造一个实时逼真的虚拟现实环境,并将此环境应用于查询等交互式过程。 相似文献
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本文是对虚拟现实建模语言建立场景的研究,提出三种实现动态交互场景的方法,并进行了分析比较,虚拟现实建模语言减小了三维动画文件的大小,提高三维动画浏览的效果. 相似文献
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虚拟现实及其在网络中的实现 总被引:9,自引:1,他引:9
虚拟现实是一种新型信息技术,它在许多领域得到了广泛的应用。该文介绍了虚拟现实的特征,系统基本构成和分类,以及实现虚拟现实的关键技术,并对虚拟现实在网络中的应用技术WEB3D进行了探讨,介绍了它的代表技术,并提出了实现WEB3D的方法和工具,最后介绍了一种基于VRML-JAVA的网络虚拟现实系统。 相似文献
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Virtual reality technology is providing earth scientists and cartographers with new, exciting and interactive ways to model the world and real-life phenomena. The Virtual Field Course (VFC) is developing software to enable students to experience fieldwork environments through multimedia, including virtual reality. The VFC aims to exploit the interactive nature of VR to enhance fieldwork teaching and learning.During preliminary development of a spatial interface for a Virtual Field Course geo-referenced multimedia database, a two-dimensional Java interface has been designed to provide information and interaction with three-dimensional VRML terrain models. During this process both the scope and the constraints of geo-referenced VRML have been examined. Recommendations about geo-referencing VRML models, terrain construction and Java interfacing are made and potentially useful areas for future development are identified. 相似文献
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The most important goal of virtual reality is to create a virtual world computers where users are allowed to view the environment and control the virtual objects interactively.Traditionally,virtual reality systems use 3D computer graphics to model and render a virtual environment in real time.However,this approach usually requires laborious modeling and expensive special-purpose rendering hardware.Image-based rendering is a new approach in composing a virtual environment in which a set of panoramic images is used to compose the virtual environment and walking in the space is accomplished by “hopping”to different panoramic points.This paper introduces an experimental image-based VR system.The techniques utilized in the system,in particular the authoring and interactive control tools of the system,are described in detail. 相似文献
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虚拟现实三维开发服务公共技术平台研究与设计 总被引:1,自引:0,他引:1
李玉刚 《网络安全技术与应用》2012,(1):55-56,48
本文阐述了虚拟现实技术是计算机技术与思维科学相结合的产物,该技术的出现为人类认识世界提供了新的认识工具,通过与虚拟环境交互,有效地拓展了认识手段和领域。阐明了现有虚拟现实技术在可视化开发过程中操作较为复杂,应用空间有其局限性,难以大范围普及。探讨分析了虚拟现实三维开发服务公共技术平台所能提供的相关技术,指出该平台建设将提供一个价格低廉,应用广泛,开发效率高的平台,有其广泛的应用领域。 相似文献
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Virtual reality-based assessment tools arise as a promising alternative for classic neuropsychological assessment with an increased level of ecological validity. Because virtual reality cognitive measures recreate tasks that resemble with the demands from the real world it is assumed that they require additional cognitive resources and are more difficult than classical paper-and-pencil or computerized measures. Although research has focused on comparing the performance obtained on virtual reality-based measures with classical paper-and-pencil or computerized measures, no meta-analysis has been conducted on this topic. Thirteen studies met our inclusion criteria: assessed any cognitive process using virtual reality and analogous classical or computerized assessment tools of the same process. Based on a random effects model, the results indicated a moderate effect size in favor of classical and computerized tests (g = −0.77) revealing an increased task difficulty in virtual reality. Overall, results from the current meta-analysis point out that cognitive performance obtained in virtual reality is poorer than the one in classical or computerized assessment which might suggest that tasks embedded in virtual reality have an increased level of complexity and difficulty and require additional cognitive resources. 相似文献