共查询到17条相似文献,搜索用时 156 毫秒
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基于VR技术的虚拟校园系统的设计与实现 总被引:2,自引:0,他引:2
虚拟现实技术是指利用计算机多媒体技术从人的嗅觉、视觉、触觉和听觉等多方面来全方位模拟环境,使人产生身临其中的感觉,通过人机交互操作,来获得相应的信息或者体验.本文分析了虚拟校园系统的发展现状以及在web2.0下基于VR技术的虚拟校园系统的设计与实现.通过对虚拟现实技术的介绍,结合校园导向标识系统的设计要求,提出利用虚拟... 相似文献
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虚拟现实技术是指利用计算机多媒体技术从人的嗅觉、视觉、触觉和听觉等多方面来全方位模拟环境,使人产生身临其中的感觉,通过人机交互操作,来获得相应的信息或者体验.本文分析了虚拟校园系统的发展现状以及在web2.0下基于VR技术的虚拟校园系统的设计与实现.通过对虚拟现实技术的介绍,结合校园导向标识系统的设计要求,提出利用虚拟现实技术来实现校园导向标识系统的可行性方案.叙述了虚拟校园系统的框架、开发技术以及具体的实现方法,并对虚拟校园系统的建模方法以及交互性进行了重点阐述. 相似文献
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虚拟现实中基于图像的三维空间漫游方法 总被引:4,自引:0,他引:4
最近几年基于图像的虚拟现实技术渐渐引起人们的兴趣。它是一种通过实景拍摄获取图像来表示虚拟场景的技术。提出了一种基于图像的三维空间漫游方法 ,它是基于视图变形技术的原理 ,在三维空间中选定三幅视图构成一组图像基 ,再由这组基插值中间任何姿态视图 ,最后这些视图以视频方式显示出来。它避免了 3D重建问题 ,人们可以从任何视点或视向来观赏对象。 相似文献
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在工程监测中,通过虚拟现实技术进行预警、侦测或巡检等,可在保证人身安全的情况下,对设备状态进行监测并判断;目前多数虚拟现实开发技术存在需要大量存储和分析数据的问题,采取流媒体技术可以很好的解决数据量的问题,但采用具有流媒体功能的软件开发的虚拟场景没有很好的临境感,而全景技术能够使人从各个角度获得直观的立体感,能够解决场景临境感差的缺陷;将流媒体技术与全景技术结合建立风力发电机的全景漫游监测系统,实现了对风力发电机的监测,得到了很好的效果。 相似文献
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刘建波 《工程物理研究院科技年报》2009,(1):74-75
虚拟样机(Virtual Prototype,VP)是随着虚拟现实(Virtual Reality,VR)技术的进步而发展起来的一项以并行工程和虚拟制造为基础的新型设计、制造技术。它以三维数字化模型为基础,利用虚拟现实技术对真实设备进行几何、功能、物理等方面的交互建模与仿真分析,多层次、多角度来模拟真实设备。 相似文献
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虚拟现实技术是综合集成技术,具备自然模拟、逼真体验的特征,虚拟培训是虚拟现实技术的重要应用之一。虚拟培训系统可以设计出一个人机交互的虚拟的计算机培训环境,模拟出真实的工作程序、工作环境、技术指标、动作要求,使培训者能感觉到身临其境的培训过程。相对于传统的培训系统,虚拟培训系统具有形象、简易、安全、科学、经济和实效的特点。 相似文献
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An approach for the three-dimensional (3D) reconstruction of architectural scenes from two un-calibrated images is described in this paper. From two views of one architectural structure, three pairs of corresponding vanishing points of three major mutual orthogonal directions can be extracted. The simple but powerful constraints of parallelism and orthogonal lines in architectural scenes can be used to calibrate the cameras and to recover the 3D information of the structure. This approach is applied to the real images of architectural scenes, and a 3D model of a building in virtual reality modelling language (VRML) format is presented which illustrates the method with successful performance. 相似文献
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A. Mazikowski 《Opto-Electronics Review》2018,26(2):116-121
In recent years, many scientific and industrial centres in the world developed a virtual reality systems or laboratories. The effect of user “immersion” into virtual reality in such systems is largely dependent on optical properties of the system. In this paper, problems of luminance distribution uniformity in CAVE-type virtual reality systems are analyzed. For better characterization of CAVE luminance nonuniformity corner and edge CAVE nonuniformity were introduced. Based on described CAVE-type virtual reality laboratory, named Immersive 3D Visualization Lab (I3DVL) just opened at the Gdansk University of Technology, luminance nonuniformity of the system is evaluated and discussed. Data collection of luminance distribution allows for software compensation of intensity distribution of individual images projected onto the screen (luminance non-uniformity minimization) in the further research. 相似文献
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In this paper, we propose a radial stereo imaging system for three-dimensional reconstruction of an object. This system uses a novel optical device which consists of a camera and two reflected mirrors. It can reconstruct three-dimensional model of an object by capturing one image. Depending on the reflection of the mirrors, each world point in the scene has a pair of points which sit in the inner and outer of the captured image, respectively. We firstly analyze the imaging constraint of the proposed system, and then derive the geometrical relationship between world point and image point pair to calculate the three-dimensional coordinate values of an arbitrary point on the object, which means that the three-dimensional model of the object can be recovered. Experiments are carried out to prove our design, and the results show that our radial stereo imaging system is convenient and effective for the three-dimensional reconstruction of an object. This system can be used in variety of applications, such as virtual reality and commodity show. 相似文献