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排序方式: 共有188条查询结果,搜索用时 15 毫秒
61.
62.
地籍数据建库方案的探讨 总被引:2,自引:0,他引:2
通过对建立"地籍数据库"的一些体会和认识,探讨地籍数据转换、CAD图形系统生产的矢量数据转换到地籍数据库中的一些技术路线,探索利用CAD系统生产地籍数据库的方法. 相似文献
63.
根据AutoCAD及ESRI ArcGIS数据的特点,采用结合DWGDirect.NET与ArcGIS Engine编写系统实现CAD地形图到GIS数据的转换,并就早期AutoCAD成图与当前CASS成图提出不同的转换方案. 相似文献
64.
T. Neutens F. Witlox N. Van De Weghe P. H. De Maeyer 《International journal of geographical information science》2013,27(10):1061-1076
Constraint‐based models and models constructing accessibility measures mainly focus on single agents having only one available transport mode. However, numerous cases exist where multiple agents or groups of individuals with different available transport modes want to participate in a joint activity at a certain location. The aim of this paper is to provide new insights into representing and reasoning about feasible space–time opportunities for multiple agents. Relying on concepts of time geography, we propose a conceptual framework in order to determine interaction spaces for groups of individuals. Besides availability of means of transport and the locations of each individual, minimum activity duration and opening hours of opportunities are taken into account. The reasoning about space and time is visualized in three dimensions using a hybrid (CAD/GIS) system. 相似文献
65.
地下管线横断面图是反映地下管线探测成果的重要手段,对于施工、设计、管理都有着非常现实的指导意义。本文主要阐述了横断面图的设计原理以及运用VBA语言通过对AUTOCAD2008进行二次开发,实现地下管线横断面图的自动绘制。 相似文献
66.
简要介绍了基于CAD平台开发悬挂点检查与自动处理的程序开发技术、技术路线、实现方法、主要源代码。主要用于地籍测量数据入库前悬挂点检查,并用实例进行了验证,取得了满意的效果,达到了设计的目的,为作业单位提高了效率。 相似文献
67.
The Department of Geomatics and the Regional Centre for Innovation in Engineering Design in the University of Newcastle upon Tyne collaborated in a project to produce precise measurements for use in the fabrication of the body of the "Angel of the North" sculpture. This 20 m high edifice, by the sculptor Antony Gormley, is located adjacent to the A1(M) in Gateshead, Tyne and Wear.
This paper reviews the photogrammetric reverse engineering work carried out on a 1:10 scale plaster maquette of the "Angel of the North", which is a life-size model of the sculptor's body without any arms. The three dimensional measurements of the maquette, made by analytical photogrammetric techniques, were then processed to produce a fully functional three dimensional CAD model from which the dimensions needed by the fabricating company, Hartlepool Steel Fabrications Ltd., could be extracted. Additionally, the VirtuoZo digital photogrammetric software package was used to investigate the potential of automated measurement for this type of work and the results were compared with those obtained analytically. 相似文献
This paper reviews the photogrammetric reverse engineering work carried out on a 1:10 scale plaster maquette of the "Angel of the North", which is a life-size model of the sculptor's body without any arms. The three dimensional measurements of the maquette, made by analytical photogrammetric techniques, were then processed to produce a fully functional three dimensional CAD model from which the dimensions needed by the fabricating company, Hartlepool Steel Fabrications Ltd., could be extracted. Additionally, the VirtuoZo digital photogrammetric software package was used to investigate the potential of automated measurement for this type of work and the results were compared with those obtained analytically. 相似文献
68.
Cyra三维激光扫描系统是一种先进的测绘仪器,但由于它所采集的数据量过于巨大,当需要将它采集的点云数据在AutoCAD平台进行处理时,普通的个人电脑还无法运行如此海量的数据,以在辽宁省阜新市热电厂采集的管线数据为例,采用数据分割、稀化等手段,解决点云数据在AutoCAD平台上无法正常应用的问题,总结出一种切实可行的技术方法。 相似文献
69.
论述利用AutoCAD中内嵌的AutoLISP语言及AutoCAD定义型、阴影的方法,提供地籍图符号库的设计方法。 相似文献
70.
根据我国大多数城市正射影像图的特点,建立了影像图中像素坐标和实际地理坐标的对应关系,在详细地分析常用CAD和GIS平台中影像图配准方法和影像配准文件结构内容的基础上,采用VB6.0,通过程序代码的编写,实现了常用CAD和GIS平台中正射影像图的自动化、批量化配准,大大提高了影像配准和入库效率。 相似文献