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geospatial information service Based on Digital Measurable Image——Take Image City·Wuhan as an Example

Geo-Spatial information Science 2010年第2期13卷 79-84页

作者： LI Deren SHEN Xin State Key Laboratory of information Engineering in Surveying Mapping and Remote Sensing Wuhan University 129Luoyu Road Wuhan 430079 China

t LBS （location-based service） is a remarkable outcome of the development from GIS to geospatial information service. Faced by the requirements of geospatial information from the masses and the opportunity provided by the next generation lnternet and Web 2.0, a new model of geospatial information service based on DMI （digital measurable image） is presented. First, the con- cept of LBS and the opportunities of Web 2.0 are introduced, then the characteristic of DMI is discussed. Taking the Image *** as an example, the function ofgeospatial information service based on DM! is introduced. Finally, the feasibility for its industrialization is discussed.

关键词： location-based service digital measurable image geospatial information service

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A capability matching and ontology reasoning method for high precision OGC web service discovery

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International Journal of Digital Earth 2011年第6期4卷 449-470页

作者： Nengcheng Chen Zeqiang Chen Chuli Hu Liping Di State Key Lab for information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhan 430079China Center for Spatial information Science and Systems George Mason UniversityFairfaxVA 22032USA

Finding the right spatially aware web service in a heterogeneous distributed environment using criteria such as service type,version,time,space,and scale has become a challenge in the integration of geospatial information services.A new method for retrieving Open geospatial Consortium(OGC)Web service(OWS)that deals with this challenge using page crawling,link detection,service capability matching,and ontology reasoning,is described in this *** major components are distributed OWS,the OWS search engine,the OWS ontology generator,the ontology-based OWS catalog service,and the ontology-based multi-protocol OWS *** results show that the execution time of this proposed method equals only 0.26 of that of Nutch’s *** addition,the precision is much ***,this proposed method can carry out complex OWS reasoning-based *** is being used successfully for the Antarctica multi-protocol OWS portal of the Geo-information Web service Portal of the Polar.

关键词： geospatial information service link detection capability matching OWL-S ontology reasoning

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