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<正>地图综合是地图数据生产的核心环节,一直以来都是地图学科的难点问题。本文针对地图综合智能化和自动化程度不高的现状与土地利用数据综合的工程需求,应用智能体技术对地图综合过程进行建模分析以提高其自动化和智能化程度,以土地利用图斑多边形数据为例进行试验以提高土地利用数据综合的效率。全文主要包括以下内容。(1)对数字技术下的地图综合概念、类型、专家系统和智能体技术的应用进行了现状分析并提出观点:地图 相似文献
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介绍了三维地图生产的基本流程,详细阐述了基于3dmax软件结合摄影测量技术进行三维地图模型建立与优化的方法和步骤,对建模过程中可能产生的问题进行了重点分析,并提供了解决思路。 相似文献
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ArcGIS数据与Corel Draw数据的转换方法研究 总被引：1，自引：0，他引：1
在地图生产制作过程中,地图制作软件的数据共享至关重要。传统的地图生产中没有明确提出ArcGIS和CorelDraw软件的转换方法,本文在总结了以往地图制作软件之间数据共享方法的基础上,重点阐述了ArcGIS与CorelDraw的数据之间转换的实现过程与方法,详细分析了两者数据特点和数据转换过程中要注意的问题,最后总结了CorelDraw与ArcGIS软件间数据转换仍然存在的不足,从而达到地图数据资源的共享。 相似文献
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浅析高精度地图发展现状及关键技术 总被引：1，自引：0，他引：1
随着国家对智能汽车创新发展战略任务的推进,作为其关键保障技术的高精度地图在近几年已经成为测绘等多个领域的研究重点。针对当前高精度地图综述性理论研究相对缺乏的问题,本文从高精度地图数据结构、数据生产和功能应用3个方面,对高精度地图相关的主要研究内容及现状进行阐述和总结。从数据结构层面,高精度地图描述内容可划分为静态地图数据和动态地图数据,其中静态地图数据是当前制图的重点;考虑数据生产的层次性,分别对高精度地图的生产模式、生产流程和具体的技术方法进行了分析,认为专业部门指导结合众包是数据生产的基本特征;以自动驾驶中的匹配定位和导航规划为代表,总结了高精度地图在应用方面的关键技术。最后,对高精度地图未来发展的方向进行了展望。 相似文献
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Participatory modeling is an important approach for solving complex geo-problems from a comprehensive and holistic viewpoint, and it brings together stakeholders from multiple disciplines to provide diverse resources, including modeling, data fields and computational assets. Data configuration work (e.g., preparing appropriate input data for model execution, connecting a model’s output to the input data of another model) is important for constructing and executing a participatory modeling task. Most current data configuration methods depend on the model integration logic, which presents a challenge when adding new modeling resources into a model to dynamically create and execute new modeling tasks. To support the construction of participatory modeling tasks in a web environment, this article proposes a loosely integrated data configuration strategy for decoupling data configuration work from the execution process of a participatory modeling task. A model service controller is designed for model input/output (I/O) configuration, and a data service controller is designed for data access configuration. These two controllers can help modelers link the data I/O demands of a model-service with the appropriate data-services; thus, different modeling instances can be dynamically joined to a participatory modeling task and executed without reconstructing the original data configuration settings. A prototype participatory modeling system is proposed to demonstrate the flexibility and feasibility of the proposed method using an experimental modeling case. The results show that the proposed data configuration strategy supports the integration of different model-services based on the data dependency relationships and that the complexity and difficulty in configuring data for a participatory modeling tasks in the web environment are minimized. 相似文献
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利用规则统一三维实体间的语义形式化表达,为建模提供统一的方法。利用三维矢量数据模型的框架,对直钻孔、斜孔、剖面、等值线、断层、褶皱等数据源,分别按规则制定一种数据格式,对多源地质数据进行标准化和信息融合,经过地质面和地质体的快速构建,提出了建立基于规则库的三维矢量数据模型。同时研究了适合各类地质特点的三维模型自动构建方法,包含多源数据耦合层状地质体自动建模技术、基于剖面单元格划分的分区—拼接自动建模技术、多约束下复杂地质结构快速建模技术、空间约束条件下三维地质属性建模技术等。在确保模型精度的前提下,尽量减少人工交互建模的工作量,提高了建模效率。 相似文献
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A key issue to address in synthesizing spatial data with variable-support in spatial analysis and modeling is the change-of-support problem. We present an approach for solving the change-of-support and variable-support data fusion problems. This approach is based on geostatistical inverse modeling that explicitly accounts for differences in spatial support. The inverse model is applied here to produce both the best predictions of a target support and prediction uncertainties, based on one or more measurements, while honoring measurements. Spatial data covering large geographic areas often exhibit spatial nonstationarity and can lead to computational challenge due to the large data size. We developed a local-window geostatistical inverse modeling approach to accommodate these issues of spatial nonstationarity and alleviate computational burden. We conducted experiments using synthetic and real-world raster data. Synthetic data were generated and aggregated to multiple supports and downscaled back to the original support to analyze the accuracy of spatial predictions and the correctness of prediction uncertainties. Similar experiments were conducted for real-world raster data. Real-world data with variable-support were statistically fused to produce single-support predictions and associated uncertainties. The modeling results demonstrate that geostatistical inverse modeling can produce accurate predictions and associated prediction uncertainties. It is shown that the local-window geostatistical inverse modeling approach suggested offers a practical way to solve the well-known change-of-support problem and variable-support data fusion problem in spatial analysis and modeling. 相似文献
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地面三维激光扫描技术在公路建模中的应用 总被引：6，自引：2，他引：4
为解决传统技术获取公路数据效率低,数据不够精确与详细的问题,本文提出了将地面三维激光扫描技术应用于公路建模的数据采集方案和数据处理方法。根据地面激光扫描的特点和公路建模要求,设计出按最佳扫描距离进行分段设站、分块扫描的数据采集方案。经过点云配准和滤波等预处理后,利用点云几何信息进行了数字表面模型、等高线、纵横断面等模型生成。本文以Trimble GS200地面三维激光扫描仪为例对高速公路路面进行数据采集,以Realworks Survey5.0作为建模工具进行路面建模。结果表明采集方案能提高获取原始数据的效率,并且保证了数据质量,降低了数据处理的复杂程度。 相似文献
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This paper presents a conceptual data model, the STA-model, for handling spatial, temporal and attribute aspects of objects in GIS. The model is developed on the basis of object-oriented modeling approach. This model includes two major parts: (a) modeling the signal objects by STA-object elements, and (b) modeling relationships between STA-objects. As an example, the STA-model is applied for modeling land cover change data with spatial, temporal and attribute components. 相似文献
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Development of a GIS data model with spatial, temporal and attribute components based on object-oriented approach 总被引：1，自引：0，他引：1
SHI Wenzhong ZHANG Minwen 《地球空间信息科学学报》2000,3(1):17-23
1 lntroductionA Mraphical object normal1y poSSeSSes threecomPOnents: spatiaI, temporal and attribute asPeCts.The first comPOnent describes the spatial extent ofan object, such as the boundary of a Iand parcel.The second describes timesrelated information, fOrinstance, the beginning and end time of a land Par-cel. The third describes the attribute characteristicsof obects, fOr example, the type of land cover.These three comPOnents constitute a complete im-age of an object.In most of the… 相似文献
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针对传统的建筑物建模方法需要大量人机交互操作,建模过程复杂和成本高的问题,该文提出一种参数化建筑物三维建模方法。首先,以高分辨率遥感影像和建筑物立面影像作为数据源,在遥感和GIS软件平台的支持下,提取建筑物的底面边界、高度、楼层数、层高和屋顶类型等空间数据和属性数据,并将其保存至GIS空间数据库。其次,提出基于拉伸、拆分、添加结构面过程的建筑物主体结构建模方案,并设计了模型自动生成算法。进一步,采用Ruby面向对象语言,通过调用SketchUp平台的应用程序接口函数,结合编程实现了建筑物的自动化建模。最后,开发了建筑物参数化建模插件。实际建模实验成果表明:该方法能够显著降低建模人员劳动强度,提高建模效率。 相似文献
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分析了当前海底三维建模流程中的关键技术,为建模人员提供指导。海底三维建模方法分为基于图像内容建模和基于点状地形数据建模。前者模型精确,视觉效果较好,但建模速度较慢,适合于小范围建模;后者建模速度较快,且满足海底大范围三维建模的精度要求。在海底三维建模中,对于小物件,采用基于图像的建模方法,而大范围的海底地形,采用基于点状数据的建模方法。 相似文献