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Mobile Mapping’s ability to acquire high-resolution ground data is opposing unreliable localisation capabilities of satellite-based positioning systems in urban areas. Buildings shape canyons impeding...
This article introduced the function and the method of statistical data excavation, through the analysis sex statistical data characteristic, the data mining technology was carried on for sex statisti...
Geo-referenced digital images tak en by CCD cameras and integrated with GPS/INS data provide an efficient way for monitoring special objects with high resolution and visual capability in a h ighway/ro...
Nowadays improved Internet connections, standardised interchange formats and enhanced mobile devices enable the users to access all information available from almost every place. For the most cases t...
Three dimension data are in great demand for the various applications such as 3D GIS, navigation, digital archive, simulation, computer games, and so on. In order to represent space in details, it is...
Currently the Centre for Topographic Information, Geomatics Canada, NRCan is involved in issue-based programs, such as the Geomatics for Northern Development and the Reducing Canada’s Vulnerability t...
The spatial information interoperability method based on web (xml) standards is the best method to implement spatial information sharing and interoperability through the Internet at present time. Web...
Attaining geospatial information is a challenge for many scientific practitioners. Such information is a necessary tool for spatial decision making. Remote Sensing (RS) is the leading art/science pr...
Automatic change detection and data updating is a very important issue for keeping the temporal accuracy and currency of spatial data sets. Road networks are one of the most important parts of geograp...
Remote sensing facilitates the extraction of information for earth’s surface through its capability of acquiring images covering large areas and the availability of commercial software for their pro...
Large and growing archives of orbital imagery of the earth’s surface collected over the past 40 years provide an important resource for documenting past and current land cover and environmental change...
In this paper we present a novel method for the registration of point cloud data obtained using terrestrial laser scanner (TLS). The final goal of our investigation is the automated reconstruction of ...
根据GML数据路径查询中同时进行Feature元素包含关系以及Feature几何特性拓扑关系判断的需要,在研究传统XML路径编码方法的基础上,设计一种以Feature元素为单元的GML文档扩展区域编码:ER-Code。实验证明:ER-Code在编码初始构造、基于编码的整体查询等方面均具有较好的性能,把ER-Code与Feature的空间几何特性融合为一个整体空间,可大大提高GML数据路径查询的效率...

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