Determining the grade of semantic similarity between geospatial concepts is the basis for evaluating semantic interoperability of geographic information services and their users. Geometrical models, such as conceptual spaces, offer one way of representing geospatial concepts, which are modelled as n-dimensional regions. Previous approaches have suggested to measure semantic similarity between c...

Positioning service is one of Wireless Sensor Networks’ (WSNs) fundamental services. The accurate position of the sensor nodes plays a vital role in many applications of WSNs. In this paper, a 3D positioning algorithm is being proposed, using mobile anchor node to assist sensor nodes in order to estimate their positions in a 3D geospatial environment. However, mobile anchor node’s 3D path optim...

The major natural disasters that occurred in the last few months have shown the importance and necessity for collaborative, international crisis management. Current geoinformation technologies are potentially powerful tools for mitigation, preparation, response, and recovery tasks in crisis situations; however, they fail to support group work and have typically been designed without scientific ...

A research agenda is presented which addresses the current role and potential of map displays. By considering the geospatial data used in visualization, the form and design of maps, the purposes for which map displays are created, the nature of the map user community, and the technology employed to visualize geospatial data, a thorough overview of the nature of cartographic visualization is giv...

Grid technology provides secure, fundamental methods for advanced distributed computing and data sharing over the Internet. The technology has been used in applications in many disciplines. However, applications in the geospatial disciplines are just beginning. This paper describes a project that applies Grid technology to the Earth observation environment through the integration of the Globus ...

Visualization refers to various types of graphic representation of geospatial information ranging from static to dynamic presentation (cartographic visualization), to exploratory data analysis (scientific visualization). Visualization projects carried out by Natural Resources Canada focus primarily on the former: web-based, interactive, dynamic representation of information, suitable for effect...

The final project for students enrolled in Geospatial Technologies for the K-12 Classroom (GEOG 321) is the development of a lesson for their future classroom. An obstacle to implementing geospatial technologies in public classrooms is lack of relevant curriculum and data. After reviewing the limited existing curriculum, students design age-appropriate lessons for possible publication on the Ne...

Please cite this article in press as: Yue, P., et al Photogram. Remote Sensing (2013), http://dx.d Remote sensing imagery has been commonly used by intelligence analysts to discover geospatial features, including complex ones. The overwhelming volume of routine image acquisition requires automated methods or systems for feature discovery instead of manual image interpretation. The methods of ex...