共查询到20条相似文献，搜索用时 218 毫秒
1.
根据三维GIS的技术特点和输电线路管理的需求,利用三维模型构建、模式设计和OGRE图形渲染引擎技术,结合虚拟现实和GIS的技术特点,实现用户在三维空间中认识和管理输电系统,使信息管理与维护更直观方便。 相似文献
2.
随着网络技术的发展和教学资源的扩大,改进和优化虚拟实验室体系结构,建立三维模型库,可以提高模型利用率并加快模型检索速度,实现虚拟教学资源的共享性和扩展性。初步探讨了基于网络模型库的虚拟实验室的体系结构,分析了三维模型库设计过程中需要考虑的几个问题,最后实现了一个简单的三维模型库原型系统,并应用在虚拟考察实验室中。 相似文献
3.
教学模型在机械制图教学过程中发挥着重要的辅助作用。本文首先讨论了传统模型的缺点,结合实际教学情况,提出了建立虚拟三维模型库,将三维模型应用到机械制图教学过程中,会取得更好的教学效果。 相似文献
4.
5.
分析了三维模型库在机械制图课程教学应用中客观存在的问题,探讨了能满足机械制图教学要求的三维模型资源库结构,并给出了该网络化三维模型库在机械制图课程教学中的应用形式和实例。 相似文献
6.
董丽琴 《河北软件职业技术学院学报》2008,10(4)
本文指出机械制图传统教学手段及现有教学手段的不足,讨论了三维模型库对机械制图教学所起的重大作用,并简要介绍了用SolidWorks软件建立三维模型库的方法。 相似文献
7.
8.
渲染是三维动画Maya软件最终色彩和光影效果的整体表现形式。介绍了使用Maya软件中的脚本语言对已经建立的一个三维碗状模型进行色彩双面渲染的方法。 相似文献
9.
10.
在机械制造工艺学的教学实践中存在一些缺陷,通过应用SolidWorks建立教学三维模型库可以弥补缺陷的同时还可以极大程度的提高教学水平和教学质量。本文还对教学三维模型库进行了介绍,解决了关键问题。 相似文献
11.
Visualization of stereoscopic anatomic models of the paranasal sinuses and cervical vertebrae from the surgical and procedural perspective 
下载免费PDF全文
下载免费PDF全文 Jian Chen Andrew D. Smith Majid A. Khan Allan R. Sinning Marianne L. Conway Dongmei Cui 《Anatomical sciences education》2017,10(6):598-606
Recent improvements in three‐dimensional (3D) virtual modeling software allows anatomists to generate high‐resolution, visually appealing, colored, anatomical 3D models from computed tomography (CT) images. In this study, high‐resolution CT images of a cadaver were used to develop clinically relevant anatomic models including facial skull, nasal cavity, septum, turbinates, paranasal sinuses, optic nerve, pituitary gland, carotid artery, cervical vertebrae, atlanto‐axial joint, cervical spinal cord, cervical nerve root, and vertebral artery that can be used to teach clinical trainees (students, residents, and fellows) approaches for trans‐sphenoidal pituitary surgery and cervical spine injection procedure. Volume, surface rendering and a new rendering technique, semi‐auto‐combined, were applied in the study. These models enable visualization, manipulation, and interaction on a computer and can be presented in a stereoscopic 3D virtual environment, which makes users feel as if they are inside the model. Anat Sci Educ 10: 598–606. © 2017 American Association of Anatomists. 相似文献
12.
13.
CHON Jaechoon LEE Yang-Won SHIBASAKI Ryosuke 《浙江大学学报(A卷英文版)》2006,7(7):1259-1265
INTRODUCTION The visualization of roadside buildings in virtual space using synthetic photorealistic view is one of the common methods for representing the background scene of Car Navigation Systems (CNS) and Internet map services. Since most of these background scenes are implemented by two-dimensional (2D) images, they may give somewhat monotonous impression due to fixed viewpoint position and orientation. For more interactive visualizations that enable arbitrary ad- justment of the … 相似文献
14.
An automatic generation method of geological cross-sections in dredging engineering based on 3D geological solid models is presented.The 3D geological models are built applying the non-uniform rational B-splines(NURBS) technique,and a 2D profile can be calculated and generated automatically through Boolean operation to meet the demands of dredging projects.Moreover,an automatic marking method for geological attributes is put forward based on database technology,and the geological attributes include the profile name,scale,horizontal and vertical relative coordinates,geological lithology,and 2D standard lithology legend.At the same time,the automatic marking method can also provide an interactive mode for geological engineers to edit and modify the profile in the modeling system.Practical engineering applications show that the automatic generation method is a simple,flexible,fast and precise visual graphics rendering process that can create 2D standard profiles automatically and efficiently.This method also provides a convenient support tool for geological engineering digital analysis. 相似文献
15.
基于VTK的医学图像三维重建应用研究 总被引：1，自引：0，他引：1
医学体数据可视化在临床上已成为辅助诊断和辅助治疗的重要手段,其技术也成为近年来研究和应用的热点.为此,我们提出采用VTK库进行医学数据可视化.其中研究了表面绘制和体绘制两种绘制技术,表面绘制用移动立方体法实现,体绘制则用光线投射法实现,并通过比较两种技术的结果讨论了他们的特点.从结果中可以看出,VTK作为一种图像处理和三维可视化的工具其功能是十分强大的. 相似文献
16.
17.
Three‐dimensional printing of X‐ray computed tomography datasets with multiple materials using open‐source data processing 下载免费PDF全文
下载免费PDF全文 Ian M. Sander Matthew T. McGoldrick My N. Helms Aislinn Betts Anthony van Avermaete Elizabeth Owers Evan Doney Taimi Liepert Glen Niebur Douglas Liepert W. Matthew Leevy 《Anatomical sciences education》2017,10(4):383-391
Advances in three‐dimensional (3D) printing allow for digital files to be turned into a “printed” physical product. For example, complex anatomical models derived from clinical or pre‐clinical X‐ray computed tomography (CT) data of patients or research specimens can be constructed using various printable materials. Although 3D printing has the potential to advance learning, many academic programs have been slow to adopt its use in the classroom despite increased availability of the equipment and digital databases already established for educational use. Herein, a protocol is reported for the production of enlarged bone core and accurate representation of human sinus passages in a 3D printed format using entirely consumer‐grade printers and a combination of free‐software platforms. The comparative resolutions of three surface rendering programs were also determined using the sinuses, a human body, and a human wrist data files to compare the abilities of different software available for surface map generation of biomedical data. Data shows that 3D Slicer provided highest compatibility and surface resolution for anatomical 3D printing. Generated surface maps were then 3D printed via fused deposition modeling (FDM printing). In conclusion, a methodological approach that explains the production of anatomical models using entirely consumer‐grade, fused deposition modeling machines, and a combination of free software platforms is presented in this report. The methods outlined will facilitate the incorporation of 3D printed anatomical models in the classroom. Anat Sci Educ 10: 383–391. © 2017 American Association of Anatomists. 相似文献
18.
朱奭 《常熟理工学院学报》2014,(2):102-106
三维数据场可视化是目前计算机图形学方向研究的热点之一,随着人们需求的不断提高,对图形绘制的实时性及交互性提出了更高的要求。本文主要阐述了在CUDA架构下,利用GPU的多核并行运算能力,对实现三维数据场可视化的光线投射算法进行优化和改进。将图形处理的几何阶段在可编程硬件实现,实现图形绘制的加速。实验结果表明,在一定程度上改善了成像效果,绘制速度的加速比达到7左右。 相似文献
19.
马驰 《武汉工程职业技术学院学报》2012,(3):40-43
通过对影响3ds max+Vray软件进行图像渲染时的渲染速度与品质因素进行分析,提出提高渲染速度的方法;对软件设计绘图流程、软件组合建模以及素材库文件运用的分析,提出提高软件绘图速度的方案;最终实现在保证室内效果图渲染品质不变的条件下提高效果图的制作速度,并通过实例比较,在不影响图像渲染输出品质的情况下,发现采用软件组合建模和各类素材库综合运用,比传统方法提高绘图速度1倍左右;在渲染出图阶段,使用光子文件可提高渲染速度1倍左右。 相似文献
20.
基于虚似现实的三维场景建模的可视化实现 总被引：4，自引：0，他引：4
本文从虚拟现实的角度，运用OpenGL技术以三维图形建模予以探讨，给出了类的设计，并应用该理论实现了三维虚拟场景的可视化。 相似文献