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结合CityEngine与ArcGIS构建了一种基于三维道路模型的道路设计方案快速集成和实时模拟的辅助规划设计平台。CityEngine参数化建模软件基于CGA规则语法的建模技术,可以对道路的三维模型进行批量化快速构建,在此基础上借助ArcGIS的空间分析功能,可以开展地形分析、断面分析、土石方计算等辅助规划管理等工作,为道路规划、设计、管理部门提供了一种将可视化的设计成果进行三维展示的技术手段,帮助设计人员提高了工作效率与方案质量,为评价和决策者提供了直观、便捷的评价及决策依据。试验证明,通过将CityEngine参数化建模软件与ArcGIS的空间分析功能相结合,开发的城市道路三维可视化辅助设计平台可以直观、准确地展现城市道路设计方案,并在此基础上对道路三维模型进行空间分析,辅助决策者对方案进行评价及改动;该平台有利于不同专业工作者之间的协同配合,可以显著提高道路设计工作的技术水平和工作效率,对于推动道路设计工作由二维向三维转变具有重要意义。 相似文献
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参数化建模是通过属性参数进行实时、动态、快速三维建模的新方法。本文基于CityEngine的CGA参数化建模技术,结合地理设计的框架,并与Sketch Up、3ds Max建模软件实现了模型共享,完成了衡阳市雨母山古寺庙建筑群的三维精细模型的集中展示,对古建筑文化基因进行了较为友好的三维诠释。通过拓展已有参数化规则,创建了符合中国古建筑群三维建模的规则模板,集中展示了各式各样特色造型与样式,拓宽了三维建模技术的应用范围,为古寺庙建筑群三维基因图谱的构建和虚拟旅游规划设计提供了详细系统方案与新的理念。 相似文献
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在市政规划设计中引入虚拟现实与三维地理信息技术已经成为行业发展的必然趋势,但三维地理信息数据量大,对计算机性能要求高,传统以CAD为平台的市政设计软件在分析效率和展示效果上的不足已经成为三维技术应用的一个瓶颈。本文提出一种以云计算技术和三维地理信息技术为支撑、以云盘和云API为核心的三维线上线下一体化设计框架,整合云端的地理空间资源、存储和计算资源、在线展示与线上线下交互设计能力,解决三维道路设计中的实时建模效率低、CAD平台分析支撑弱、交互和共享困难等问题,并在重庆多个开发园区开展了示范应用。 相似文献
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胡晓娟 《测绘与空间地理信息》2016,(3)
兰州新区地理国情监测三维展示系统以兰州新区地理国情普查综合统计成果为基础,基于Skyline软件建立三维场景。在所建成的三维场景中叠加地理国情监测各类专题信息并设计展示效果,最后将三维场景封装入所开发的展示系统中,用以展示兰州新区的区位优势、地形地貌、总体规划、地理国情监测成果等内容。 相似文献
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姜松 《测绘与空间地理信息》2018,(10)
阐述了综合利用高分辨率数字航空影像,地理国情普查数据、辽河保护区专题数据等资料,以Skyline为基础软件,开发基于二维管理、三维展示的一体化综合管理应用平台实现监测分析,并在实景三维中直观地展现辽河生态治理成果。该项研究可为我国其他江河生态环境保护与治理工作提供借鉴作用和参考价值。 相似文献
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"数字城市"建设成果在国民经济建设中逐渐得到广泛应用,以直观、可视化、信息更加丰富为显著特点的"三维数字城市"建设成果,成为应用创新的助推剂,而当前,传统的依靠计算机辅助设计软件开展道路设计规划成为一种需要突破的变革趋势,选择基于三维数字城市建设成果开展道路规划设计,以其显著的优势成为道路设计规划变革的新途径。 相似文献
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《制图学和地理信息科学》2013,40(3):140-153
A hybrid system that integrates two-dimensional (2D) GIS and three-dimensional (3D) visualization has been developed to provide unique solutions to application domains where traditional 2D GIS and 3D visualization cannot alone provide a solution. In this paper, we focus on three key issues in realizing such an integrated system, including large-scale terrain rendering, 2D and 3D combination display (for example, rendering 2D GIS layers in 3D space), expanding traditional 2D GIS analysis functions into a 3D environment, and visualizing 3D geographical data. A generic framework is developed to integrate 3D visualization with various types of 2D GIS, such as commercial GIS software, open source GIS software and spatial databases. A prototype 2D and 3D hybrid system that seamlessly integrates 2D GIS (developed with ArcEngine) and 3D rendering engine (developed with DirectX) is then developed based on the framework. In this hybrid system, 2D and 3D data are viewed within the same scene. Multiple 2D GIS layers are overlaid on the base terrain using a Level of Detail (LOD) model. Advanced query functions, data accessing, data management and spatial analysis, which are executed in the traditional 2D GIS, are provided to users in a 3D environment by continuously transforming information between the 2D GIS subsystem and the 3D subsystem. The 3D data are organized and displayed by Keyhole Markup Language (KML) and textured 3D models in the COLLAborative Design Activity (COLLADA) format. The prototype demonstrates that this hybrid system has effectively addressed the three key issues identified above and that it can seamlessly integrate 2D GIS and 3D visualization. The hybrid system has great potential to be employed in many application domains, such as urban planning, landscape design and environmental decision making, among others, to enhance the 3D design capability and facilitate public participation in the planning, design and decision-making process. 相似文献
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随着3维GIS技术日益完善,使我们能够构建近于现实的房地产3维模型,它不仅能反映房地产的位置和空间信息,还能进行3维空间的查询和分析,可用于房地产规划决策、建设和交易管理。本文将以Google Earth的GIS平台和数字城区的虚拟漫游系统为基础结合3维建模基本理论对房产信息系统进行全新的设计。 相似文献
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20世纪50年代未期DEM技术被提出后,伴随着软件技术的提高与获取数据源手段的不断进步,DEM作为新的技术为公路勘察设计提供了全新高效的方法。本文阐述了基于南方CASS7.1成图系统、Civil3D2006软件、纬地软件平台,通过建立数字高程模型(DEM)对道路设计进行研究,并通过实例进一步阐述DEM技术在道路设计中的优越性。 相似文献
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《International Journal of Digital Earth》2013,6(10):771-788
Virtual globes (VGs) allow Internet users to view geographic data of heterogeneous quality created by other users. This article presents a new approach for collecting and visualizing information about the perceived quality of 3D data in VGs. It aims at improving users' awareness of the quality of 3D objects. Instead of relying on the existing metadata or on formal accuracy assessments that are often impossible in practice, we propose a crowd-sourced quality recommender system based on the five-star visualization method successful in other types of Web applications. Four alternative five-star visualizations were implemented in a Google Earth-based prototype and tested through a formal user evaluation. These tests helped identifying the most effective method for a 3D environment. Results indicate that while most websites use a visualization approach that shows a ‘number of stars’, this method was the least preferred by participants. Instead, participants ranked the ‘number within a star’ method highest as it allowed reducing the visual clutter in urban settings, suggesting that 3D environments such as VGs require different design approaches than 2D or non-geographic applications. Results also confirmed that expert and non-expert users in geographic data share similar preferences for the most and least preferred visualization methods. 相似文献
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