Grid GIS is a new technology which integrates the Grid with GIS. The analysis and application of geospatial information based on WebGIS now has new contents and application approaches based on Grid GIS, so the assignment and realization of computation tasks are more complex. The algorithm Com-Pool which is applied in Grid GIS can realize the task scheduling for its simple and practical characte...

In this paper, we propose an approach to semantically retrieve geospatial objects within an Intranet by means of their metadata. It consists of structuring a semantic repository in order to provide the inclusion mechanisms of distributed data to be retrieved, as well as the extraction of those geospatial objects with respect to their conceptual similarity. The similarity measure is based on a c...

Geospatial ontology plays a key role in Geospatial Semantic Retrieval (GSR), which provides support for query expansion and disambiguation, relevance ranking and web page annotation. However, existing ontologies are deficient in representing and reasoning fuzzy geospatial information, an important type of information that distributes widely in user’s queries and web pages. This paper proposes a...

The overarching objective of this study is to report the implementation and performance of a novel delineation clustering algorithm employing the k-means. This study explores a newly proposed algorithm designed to increase the overall performance of the k-means clustering technique—the Fast, Efficient, and Scalable k-means algorithm (FES-kmeans*). The algorithm reduces the computational load an...

A technique is presented to cluster geospatial features on an electronic display and determine a meaningful measure of display clutter. An algorithm previously developed by the Naval Research Laboratory (NRL) to cluster objects in sidescan imagery has been modified to cluster any displayed features in three dimensions: geospatial location (x, y) and color (z). This paper presents preliminary re...