一种基于3ds Max与Smart 3D的三维模型构建方法     

徐金财  李朝奎  陈建辉 《测绘通报》2020,(11):61-65

基于某大学图书馆点云数据及航摄相片,本文采用3ds Max与Smart 3D两种方法构建三维模型。一方面,采取人机交互的方式进行建模,将三维激光点云数据导入3ds Max软件建立三维数字模型;另一方面,使用半自动人工方式建模,采用Smart 3D软件,将航摄像片数据经过空三加密、自动建模、贴图等操作后对建筑实体建模。从建模效率、模型美观性、建模精度、适用对象等方面比较了两种建模方式的特点与区别。结果表明,3ds Max更加适用于规则体、高精度建模,同时建模的效率相对较低;Smart 3D建模效率高,更加适用于大场景范围的快速建模。本文研究结论有助于不同需求背景下建模方法的选取,为研究、工程及试验提供了三维建模方法选择参考。  相似文献   

基于航测数据的三维建模方法研究   总被引：1，自引：0，他引：1  

彭芳媛  周齐生  向常淦 《四川测绘》2011,(2):63-65

随着人类认知水平的提高,数字化真三维模拟将成为表达现实世界的主要方式。本文利用3dsMax软件对航测数据进行了三维建模方法研究,并对三维建模技术进行了详细叙述,给出了实验结果,同时对建模过程中的一些关键性问题进行了讨论。  相似文献   

基于Unity3D引擎的三维可视化技术在煤炭地震勘探中的应用     

崔瀛潇 《中国煤炭地质》2014,(4):58-63

为满足地震勘探报告三维可视化的需要,以Unity3D引擎为开发平台,利用GIS 3D分析及3DS max三维建模,研究应用煤炭地震勘探三维可视化技术,实现三维地质数据体、地质层位(包括断层面)以及复杂地质模型等的三维可视化,实现对三维地质模型的平移、旋转、缩放,以及各种综合立体显示,建立三维环境漫游和三维可视化交互平台,并以动画形式表现出来,形成具有灵活方便使用的可视化系统。  相似文献   

三维城市精细建模的常见问题及解决方案探讨   总被引：1，自引：0，他引：1  

林莹 《现代测绘》2009,32(4):13-15

利用可视化三维地理信息平台Skyline结合三维造型软件3D MAX进行虚拟三维城市精细建模是近年来新兴的一种技术,但其数据在衔接上普遍存在一些问题.本文通过对从建模到集成全过程的细致分析,提出其常见问题及解决方案  相似文献   

3DSMax与Creator综合方法在城市三维建模中的应用     

胡诚诚  徐敬海  刘伟庆 《地理空间信息》2009,7(5):91-94

针对“数字宿迁”三维仿真系统中数据量与建模质量相矛盾的问题，阐述了3DSMax与MultiGenCreator两种建模软件各自的特点，分析和总结了建模过程中需要注意的问题以及关键技术。结合宿迁三维仿真系统，探讨了3DSMax与MultigenCreator两者相结合的综合建模技术，建立了宿迁市新城区三维仿真系统模型，实现了宿迁市新城区三维仿真漫游场景。  相似文献   

3D地图打印技术研究     

王宝成  李晓亮  邢辉 《测绘通报》2017,(4):98-100

2015年9月美国3D打印机在河北省制图院落户。笔者结合其配套打印软件,组织技术人员反复实践,研发出一套符合我国实际的3D地图生产工艺流程,成功解决了基础地理信息国标数据格式向3D格式数据转换、3D地形模型编辑、3D符号设计等一系列难题。该技术融合了3ds Max、ArcGIS、Global Mapper等多种软件制图技术,具备实用性强、可操作性强、推广价值较高等优点。产品涵盖晕渲地图、正射影像地图、专题地图、物理沙盘等品种。3D打印地图具备以下特点：色彩鲜艳、地形直观逼真;色彩设计自由,富于变化;精度高;可接收多源数据;生产效率高。  相似文献   

浅谈如何快速制作建筑模型     

陈楚  段有林 《测绘与空间地理信息》2012,(2):95-97

首先阐述了城市3维仿真模型的重要意义,然后分析了3维仿真模型的数据生产方法和建模流程。本文着重对如何运用数字摄影测量工作站采集建筑的特征线,结合Max Script语言快速制作出3维建筑模型的方法进行了初步探索。  相似文献   

Active multiple tuned mass dampers for structures under the ground acceleration     

Chunxiang Li  Yanxia Liu 《地震工程与结构动力学》2002,31(5):1041-1052

Active multiple tuned mass dampers (AMTMD) consisting of many active tuned mass dampers (ATMDs) with a uniform distribution of natural frequencies have been, for the first time, proposed for attenuating undesirable vibrations of a structure under the ground acceleration.The multiple tuned mass dampers (MTMD) in the AMTMD is manufactured by keeping the stiffness and damping constant and varying the mass. The control forces in the AMTMD are generated through keeping the identical displacement and velocity feedback gain and varying the acceleration feedback gain. The structure is represented by its mode‐generalized system in the specific vibration mode being controlled using the mode reduced‐order method. The optimum parameters of the AMTMD are investigated to delineate the influence of the important parameters on the effectiveness and robustness of the AMTMD by conducting a numerical searching technique. The parameters include the frequency spacing, average damping ratio, tuning frequency ratio, total number and normalized acceleration feedback gain coefficient. The criterion, which can be stated as the minimization of the minimum values of the maximum dynamic magnification factors (i.e. Min.Min.Max.DMF), is chosen for the optimum searching. Additionally, for the sake of comparison, the results of the optimum MTMD (the passive counterpart of AMTMD) and ATMD are also taken into account in the present paper. It is demonstrated that the proposed AMTMD can be expected to significantly reduce the oscillations of structures under the ground acceleration. It is also shown that the AMTMD can remarkably improve the performance of the MTMD and has higher effectiveness than ATMD. Copyright © 2002 John Wiley & Sons, Ltd.  相似文献   

Multiple active–passive tuned mass dampers for structures under the ground acceleration     

Chunxiang Li 《地震工程与结构动力学》2003,32(6):949-964

An Erratum has been published for this article in Earthquake Engineering and Structural Dynamics 2003; 32(15):2451. Multiple active–passive tuned mass dampers (MAPTMD) consisting of many active–passive tuned mass dampers (APTMDs) with a uniform distribution of natural frequencies have been, for the first time here, proposed for attenuating undesirable oscillations of structures under the ground acceleration. The MAPTMD is manufactured by keeping the stiffness and damping coefficient constant and varying the mass. The control forces in the MAPTMD are generated through keeping the identical displacement and velocity feedback gain and varying the acceleration feedback gain. The structure is represented by the mode‐generalized system corresponding to the specific vibration mode that needs to be controlled. Through minimization of the minimum values of the maximum dynamic magnification factors (DMF) of the structure with the MAPTMD (i.e. through implementation of Min.Min.Max.DMF), the optimum parameters of the MAPTMD are investigated to delineate the influence of the important parameters such as mass ratio, total number, normalized acceleration feedback gain coefficient and system parameter ratio on the effectiveness (i.e. Min.Min.Max.DMF) and robustness of the MAPTMD. The optimum parameters of the MAPTMD include the optimum frequency spacing, average damping ratio and tuning frequency ratio. Additionally, for the sake of comparison, the results for a single APTMD are also taken into account in the present paper. It is demonstrated that the proposed MAPTMD can be employed to significantly reduce the oscillations of structures under the ground acceleration. Also, it is shown that the MAPTMD can render high robustness and has better effectiveness than a single APTMD. In particularly, if and when requiring a large active control force, MAPTMD is more promising for practical implementations on seismically excited structures with respect to a single APTMD. Copyright © 2003 John Wiley & Sons, Ltd.  相似文献   

基于Skyline开发的房地产三维虚拟仿真系统     

罗帅伟  孟鲁闽 《全球定位系统》2012,37(2):57-60

本系统通过多种方法采集并分析数据,采用3DS Max进行建筑三维建模,结合并利用Skyline组件进行系统开发,实现对某房地产小区的三维虚拟场景开发。该系统不但提供三维游览服务,同时也实现了地理信息系统的多种三维分析功能。  相似文献