共查询到19条相似文献,搜索用时 125 毫秒
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基于VRML的虚拟实验系统研究 总被引:3,自引:0,他引:3
现有虚拟实验普遍存在真实感不强,交互性差的不足,VRML作为虚拟现实描述语言,能够生成三维虚拟场景,使用户与场景实时交互,为虚拟实验的发展带来了新的生机。分析了VRML的实现原理,研究如何利用VRML技术以及Web技术来架构新型的网络虚拟实验系统。在此基础上设计了一种基于VRML的虚拟实验系统,并针对性地实现了一个计算机网络课程虚拟实验系统,证明了这种基于VRML的虚拟实验系统的可实现性。 相似文献
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基于VRML的虚拟场景构造中应用建模工具的研究 总被引:4,自引:0,他引:4
随着计算机网络技术的发展,利用虚拟现实建模语言(VRML)开发桌面虚拟现实系统成为当前虚拟现实技术发展的热点。由于VRML本身的特点,这种开发过程必然笨拙而繁琐。如何利用其它的辅助开发工具来提高开发效率具有现实意义。主要讨论了如何在虚拟场景构造中应用三维建模软件,然后给出了一个基于VRML、应用三维建模软件3DS MAX构造虚拟场景的应用实例。 相似文献
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《电子科技文摘》2006,(12)
0634380连续采集工作面虚拟现实模型的实现技术[刊,中]/韩红利//计算机工程与设计.-2006,27(18).-3480- 3482(L)简要介绍了VR和VRML(虚拟现实建模语言),说明了建立连续采煤工作面三维虚拟现实VRML模型的方法;并结合开发实际,介绍了三维造型中涉及的关键技术,即实体建模、背景设定、空间视点控制、浏览方式选择和交互动画的设置,并对其中的开发技巧进行了论述;最后给出了连续采煤工作面虚拟现实模型实例。参8 0634381基于VRML的虚拟实验室交互控制方法研究[刊,中]/衣李娜//微处理机.-2006,27(4).-109-110, 114(G) 0634382某型装备虚拟操作训练系统研究[刊,中]/韩晓鸿//电脑开发与应用.-2006,19(10).-31-33(G)针对某大型复杂装备的操作训练,提出了基于HLA和Agent的分布式虚拟操作训练系统设计方案,将系统设计为一个包括九个联邦成员的操作训练联 相似文献
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高压带电作业机器人是近期出现的一种新型特种作业机器人由于作业对象的复杂、多样以及作业环境要求苛刻、危险性大,带电作业的机器人有着巨大的发展潜力。虚拟现实技术在机器人领域的应用,使得复杂动作可以在虚拟仿真系统中重现,既可以检验机器人的结构设计是否合理,又可以训练操作人员。针对这一问题,设计和开发了高压带电机器人三维仿真系统,为设计研发人员提供了机器人机械手运动仿真的虚拟研究平台,也为机器人操作人员提供了一个虚拟培训平台。 相似文献
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虚拟城市场景的实现是虚拟城市设计的重要内容。阐述了虚拟城市的构建意义,描述了虚拟现实模型语言,同时,以VRML为平台采用制作实例的方式探讨了虚拟城市场景的建立。针对VRML文件传输大、渲染速度慢的不足提出了虚拟城市场景建模的优化措施,对于城市数字化建设具有一定的借鉴意义。 相似文献
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VRML stands for Virtual Reality Modeling Language. Technically, VRML is neither virtual reality nor a modeling language. Virtual reality generally implies an immersive 3D experience, which typically requires a head mounted display (HMD) and 3D input devices, such as digital gloves. VRML neither requires nor imposes immersion. Furthermore, a true modeling language would contain richer geometric modeling primitives and mechanisms. VRML provides a bare minimum of geometric modeling features but contains numerous features unavailable in a modeling language. If VRML is not virtual reality or a modeling language, what is it? This question has several answers. At its core, VRML serves as a 3D interchange format. It defines most of the commonly used semantics found in today's 3D applications such as hierarchical transformations, light sources, viewpoints, geometry, animation, fog, material properties, and texture mapping. Here's a second answer to: what is VRML? It's a 3D analog to HTML. This means that VRML serves as a simple, multiplatform language for publishing 3D Web pages. The fact that some information, including games, engineering models, scientific visualizations, educational experiences, and architecture, can best be experienced in 3D has motivated this language. Typically, these types of projects require intensive interaction, animation, and user participation and exploration beyond what a page, text, or image based format can handle. Another answer is that VRML provides the technology to integrate 3D, 2D, text, and multimedia into a coherent model 相似文献
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随着VR(虚拟现实技术)的快速发展,三维建模技术在其中发挥着重要的作用,是虚拟现实技术的核心。本文研究探讨了VR技术和三维建模技术,以及建模软件3D MAX,还对VRML语言进行了分析论述。 相似文献
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文章利用虚拟现实技术建立了一个基于VRML的虚拟机房,介绍了虚拟机房的开发过程,对场景的几何建模、纹理映射、交互行为设计等关键技术进行了阐述。 相似文献
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在虚拟现实仿真模拟研发中,三维造型外观的逼真程度是核心工作。针对这一问题,分析虚拟现实建模语言的法向量(Normal)节点及法向量补插器(Normal Interpolator)节点的工作原理和作用,讨论基于这些节点进行三维造型虚拟仿真的实现方法,并依据研究结论给出相应的三维造型验证举例。该研究结论可有效应用于基于虚拟现实建模语言实现虚拟仿真过程中对三维造型的逼真和动态增强,对于复杂的虚拟仿真模拟的高效研发工作有重要指导意义。 相似文献
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在线虚拟电子电路实验室的VRML实现 总被引:4,自引:0,他引:4
介绍了建构在线虚拟实验室的技术,叙述了在线虚拟电子电路实验室的模型、场景建模技术及其详细设计和实现,并通过仿真软件在Internet上进行虚拟电子电路实验测试。利用VRML实现在线虚拟电子电路实验室,使远程学生把网络课堂上学习的理论知识和实验相结合,给远程学生以逼真的学习体验,使之不受资金、位置、仪器和师资等限制。 相似文献
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Current prosthetic and rehabilitation devices, used for those who are limbless or born with congenital defects or required
rehabilitation, are difficult to use. The users have problems to adapt to their new hosts or receiving any bio-feedback despite
rehabilitation process and retraining, particularly when working with electromyogram (EMG) signals. In characterizing virtual
human limbs, as a potential prosthetic device in three dimensions (3D) virtual reality, patients are able to familiarize themselves
with their new appendage and its capabilities or can see their movements’ intention in a Virtual Training Environment. This
paper presents a virtual reality (VR)-based design and implementation of a below-shoulder 3D human arm capable of 10-class
EMG-based motions driven system of biomedical EMG signal. The method considers a signal classification output as potential
control stimulus to drive the virtual limb. A hierarchical design methodology is adopted based on anatomical structure to
congruent with virtual reality modeling language (VRML) architecture used in order to progressively build the user interface
model and its inherent functionality. The resulting simulation is based on a portable, self-contained VRML prototype implementation
paired with an instrumental virtual control-select board capable of actuating any combinations of singular or paired kinematic
of 10-class EMG motions. The simulation allows for multiple degree-of-freedom profiles as the classes can be activated independently,
or in conjunction with others, allowing enhanced arm movement. Provisions for direct classified control inputs are built into
the prototype for holistic system construction. 相似文献