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991.
This paper proposes a new method based on principal component analysis to find the direction of an object in any pose. Experiments show that this method is fast, can be applied to objects with any pixel distribution and keep the original properties of objects invariant. It is a new application of PCA in image analysis. 相似文献
992.
This paper makes a study on the interactive digital generalization, where map generalization can be divided into intellective reasoning procedure and operational procedure, which are done by human and computer, respectively. And an interactive map generalization environment for large scale topographic map is then designed and realized. This research focuses on: ¹ the significance of researching an interactive map generalization environment, ² the features of large scale topographic map and interactive map generalization, ³ the construction of map generalization-oriented database platform. 相似文献
993.
论述了惠州市国土信息化建设的现状以及存在的问题,在国土资源核心业务分析的基础上提出了惠州市国土资源综合监管平台建设的总体技术方案、重点建设内容及发展建议。 相似文献
994.
在对警用地理信息系统的数据需求和数据来源进行分类分析的基础上,设计了一个3层模式的数据平台体系结构,以指导数据从来源、管理到访问的动态过程;同时结合实例,阐述了瓦片切图、数据集成、地址匹配等关键技术在数据平台建设中的应用。 相似文献
995.
HJ-1卫星业务运行管理平台既是环境应用系统的中枢,也是环境应用系统与地面运行管理系统的接口。负责环境应用系统中各类生产计划的制定和任务调度、控制各分系统之间的业务流程与数据流程,以及进行网络监控管理,实施环境应用系统与地面运行管理系统间的业务联系。本文主要介绍了该平台的软件架构和设计思路。 相似文献
996.
介绍了济南市地理信息公共平台框架数据和电子地图生产关键技术,并总结经验提出个人建议,为其他城市电子地图制作提供参考。 相似文献
997.
统筹城乡村镇建设管理平台设计与研究 总被引:1,自引:0,他引:1
村镇建设是目前中国城市化中重要研究课题。本文阐述了系统建设背最和目标,并对平台总体设计和工作内容进行描述,在确定目标客户情况下进行数据组织和平台功能需求划分,最终指出系统创新点和为未来平台功能扩充预留接口。 相似文献
998.
A. Rajabifard A. Binns I. Masser I. Williamson 《International journal of geographical information science》2013,27(7):727-741
A Spatial Data Infrastructure (SDI) facilitates and coordinates the exchange and sharing of spatial data between stakeholders in the spatial data community. With this objective in mind, countries throughout the world are developing SDIs to manage and utilize their spatial data assets more effectively. These countries are developing SDIs to assist in various kinds of decision‐making at different levels of government jurisdictions that have an important impact within their national boundaries. However, current research shows that SDI is understood and described differently by stakeholders from different disciplines and different jurisdictional levels. Therefore, in many cases, SDI initiatives remain very much an innovation, even among practitioners. There are still uncertainties regarding the benefits and identities of SDIs, particularly in connection with how they evolve over time to meet user needs. This paper reviews and assesses the development of SDIs throughout the world over the past 15 years and the leadership role of national governments in SDI creation. This assessment is based on the SDI activities of various jurisdictions including Asia‐Pacific, Australia, North America, and Europe, and research into the worldwide effects of spatial information clearing houses. This assessment includes a discussion on emerging trends in SDI development, with particular reference to the increasingly important role played by sub‐national governments and the private sector within the framework of SDI development. The paper concludes with a discussion of the implications for future SDI development, including the delivery of a virtual world that has a particular focus on facilitating decision‐making at a community level within a national context. 相似文献
999.
Qunying Huang Karl Benedict Abdelmounaam Rezgui Jibo Xie Jizhe Xia 《International journal of geographical information science》2013,27(4):765-784
Forecasting dust storms for large geographical areas with high resolution poses great challenges for scientific and computational research. Limitations of computing power and the scalability of parallel systems preclude an immediate solution to such challenges. This article reports our research on using adaptively coupled models to resolve the computational challenges and enable the computability of dust storm forecasting by dividing the large geographical domain into multiple subdomains based on spatiotemporal distributions of the dust storm. A dust storm model (Eta-8bin) performs a quick forecasting with low resolution (22 km) to identify potential hotspots with high dust concentration. A finer model, non-hydrostatic mesoscale model (NMM-dust) performs high-resolution (3 km) forecasting over the much smaller hotspots in parallel to reduce computational requirements and computing time. We also adopted spatiotemporal principles among computing resources and subdomains to optimize parallel systems and improve the performance of high-resolution NMM-dust model. This research enabled the computability of high-resolution, large-area dust storm forecasting using the adaptively coupled execution of the two models Eta-8bin and NMM-dust. 相似文献
1000.