基于Web的三维交互系统的设计与实现

介绍利用Java3D技术,构建一个基于Web的三维交互系统,实现与用户进行交互,并给出了部分实现细节。     

基于Web3D的虚拟场景漫游的设计与实现

介绍了Java3D与VR相结合的Web3D应用；采用了三层式的Client／Server结构和分布计算模型设计系统体系结构，提出了在Java3D中获取场景对象实例的方法，给出了在Java3D场景中实现虚拟场景中漫游的方法。采用Java3D实现与用户交互虚拟三维场景，并给出了部分实现细节。     

基于Java的Web3D煤矿巷道信息发布系统

研究了以Java3D作为Web三维图形引擎的Web3D煤矿巷道信息发布系统,利用基于Ajax异步通信技术GWTExt构建Web架构,实现了客户端的三维信息浏览和流畅的交互操作。     

基于Arduino的虚拟现实交互系统实验案例设计

综合运用嵌入式、三维建模、虚拟现实等技术,提出一个软硬件结合的虚拟现实交互系统典型案例,实现虚拟场景与现实环境的实时交互控制。通过3DMAX和Unity3D软件设计虚拟现实交互场景,采用Arduino核心板搭建场景的控制模块,运用光敏电阻和湿度传感器实时获取环境信息并注入虚拟场景中,实现虚拟现实交互系统。     

基于Unity3D的虚拟现实组装维护交互系统的设计与实现

Unity3D是一个新兴的平台,被广泛应用于VR领域。基于Unity3D实现的VR组装与维护交互系统中,交互模型使用三维软件3DMax创建模型和贴图,并将其导入Unity3D,以此为基础,探索并实现利用3D虚拟现实技术,实现《计算机组装与维护》这门课程中计算机的组装和维护交互功能。可以让学生更好地理解计算机原理,拓展学生的实践能力,将计算机硬件组装和维护的基础知识、技能和实践经验进行整合,形成完整的知识体系。     

Web3D技术在远程教育中的应用

Web3D技术是虚拟现实技术的一种实现形式，在网络教育阶段采用具有交互功能的3D课件可大大提高学习效率．本文结合实际介绍了Cult3D技术以及基于Cult3D技术的多媒体课件的开发过程。     

虚拟展示/定制中动态交互的设计与实现

X3D语言不具备与外部交互的能力,为实现虚拟展示和定制过程中的动态交互功能,提出一种X3D场景与外部动态交互的方法。基于这种方法设计一个基于X3D的家具展示／定制的原型系统,实现系统的动态交互功能。为三维虚拟电子商务提供一种可行的实现方法,具有一定的商业价值。     

基于Web3D的IT运维三维仿真监测系统

根据IT运维的需求,利用三维仿真实现IT运维的仿真检测,对常见Web3D技术进行分析比较,详细介绍了TWaver 3D在IT运维三维仿真检测中的应用,基于TWaver 3D实现IT系统的建模、场景控制、设备事件处理、鼠标交互等功能,满足了IT运维的仿真检测功能。     

Unity平台下的虚拟交互系统的设计

随着信息技术的发展,室内设计领域中将用户“投射”到室内虚拟逼真环境。该文研究基于Unity3D平台的室内虚拟交互设计系统,采用主流建模软件3DMAX建模,在Unity3D平台上实现交互控制,实现导航路径漫游、装修设计中的物件添删、位置移动、材质更换等交互功能。     

Web3D技术在远程教育中的应用

Web3D技术是虚拟现实技术的一种实现形式,在网络教育阶段采用具有交互功能的3D课件可大大提高学习效率,本文结合实际介绍了Cult3D技术以及基于Cult3D技术的多媒体课件的开发过程。     

支持GPU的Flash3D技术

3D图形技术的应用早已十分广泛．随着互联网的发展,越来越多的应用被推广到互联网上,但涉及3D的应用却不多,近年来,多种新技术的发展给基于Web的3D图形技术注入了新的活力．本文主要研究了基于AdobeFlash平台的Web3D技术．首先介绍了Flash3D的工作原理,然后介绍了相关的一些3D引擎,最后基于其中的一个3D引擎研究了创建3D场景的一系列关键技术,并实现了一个演示范例．     

网上数学实验中函数的录入及可视化

为了解决网上数学实验中函数的录入及其图形可视化的问题,利用Java和Java3D技术给出了平面直角坐标函数的录入及可视化模块RightAngle2D、三维空间直角坐标函数的录入及可视化模块RightAngle3D和三维空间柱坐标函数的录入及可视化模块Pole3D。实验结果表明,所给模块具有较好的可视化效果和良好的人机交互性能。     

X3D浏览器的一种实现方法

X3D(Extensible3D,可扩展3D)是一个软件标准,定义了如何在多媒体中整合基于网络传播的交互三维内容。文中根据Web3D提供的一个开放源代码开发一个X3D浏览器。本课题使用具有跨平台性的Java语言进行开发,以Java3D,swing等类库为基础,开发出了能够作为应用程序运行的X3D浏览器,并且通过Applets实现了在InternetExplorer中作为小应用程序运行的X3D浏览器。     

A system for desktop conceptual 3D design

In the traditional design process for a 3D environment, people usually depict a rough prototype to verify their ideas, and iteratively modify its configuration until they are satisfied with the general layout. In this activity, one of the main operations is the rearrangement of single and composite parts of a scene. With current desktop virtual reality (VR) systems, the selection and manipulation of arbitrary objects in 3D is still difficult. In this work, we present new and efficient techniques that allow even novice users to perform meaningful rearrangement tasks with traditional input devices. The results of our work show that the presented techniques can be mastered quickly and enable users to perform complex tasks on composite objects. Moreover, the system is easy to learn, supports creativity, and is fun to use.     

Reshaping 3D facial scans for facial appearance modeling and 3D facial expression analysis

3D face scans have been widely used for face modeling and analysis. Due to the fact that face scans provide variable point clouds across frames, they may not capture complete facial data or miss point-to-point correspondences across various facial scans, thus causing difficulties to use such data for analysis. This paper presents an efficient approach to representing facial shapes from face scans through the reconstruction of face models based on regional information and a generic model. A new approach for 3D feature detection and a hybrid approach using two vertex mapping algorithms, displacement mapping and point-to-surface mapping, and a regional blending algorithm are proposed to reconstruct the facial surface detail. The resulting models can represent individual facial shapes consistently and adaptively, establishing facial point correspondences across individual models. The accuracy of the generated models is evaluated quantitatively. The applicability of the models is validated through the application of 3D facial expression recognition using the static 3DFE and dynamic 4DFE databases. A comparison with the state of the art has also been reported.     

城市三维景观可视化研究与应用

概述了城市三维景观可视化的过程及关键技术,给出了一个基于两种流行3D API的系统框架,讨论了基于网络的城市三维景观发布技术,并提供了一个城市三维景观实例系统M3DView。     

An efficient 3D face recognition approach using local geometrical signatures

This paper presents a computationally efficient 3D face recognition system based on a novel facial signature called Angular Radial Signature (ARS) which is extracted from the semi-rigid region of the face. Kernel Principal Component Analysis (KPCA) is then used to extract the mid-level features from the extracted ARSs to improve the discriminative power. The mid-level features are then concatenated into a single feature vector and fed into a Support Vector Machine (SVM) to perform face recognition. The proposed approach addresses the expression variation problem by using facial scans with various expressions of different individuals for training. We conducted a number of experiments on the Face Recognition Grand Challenge (FRGC v2.0) and the 3D track of Shape Retrieval Contest (SHREC 2008) datasets, and a superior recognition performance has been achieved. Our experimental results show that the proposed system achieves very high Verification Rates (VRs) of 97.8% and 88.5% at a 0.1% False Acceptance Rate (FAR) for the “neutral vs. nonneutral” experiments on the FRGC v2.0 and the SHREC 2008 datasets respectively, and 96.7% for the ROC III experiment of the FRGC v2.0 dataset. Our experiments also demonstrate the computational efficiency of the proposed approach.