Clodoveu A.D. Jr. Davis, Antonio M.V.M. Monteiro's Advances in Geoinformatics: VIII Brazilian Symposium on PDF

By Clodoveu A.D. Jr. Davis, Antonio M.V.M. Monteiro

ISBN-10: 3540734139

ISBN-13: 9783540734130

ISBN-10: 3540734147

ISBN-13: 9783540734147

The GeoInfo sequence of medical meetings is an annual discussion board for exploring examine, improvement and cutting edge purposes in geographic info technological know-how and similar components. This booklet offers a privileged view of what's at the moment occurring within the box of geoinformatics, and a preview of what may be the warmer advancements and learn subject matters many years from now. also, it contains fresh study effects on spatial databases, spatial ontologies, computational geometry and visualization for geographic details platforms, geostatistics and spatial records, spatial research, interoperability, and cutting edge purposes of geotechnologies.

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Additional resources for Advances in Geoinformatics: VIII Brazilian Symposium on Geoinformatics, GEOINFO 2006, Campos do Jordão (SP), Brazil, November 19-22, 2006

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This operator is general enough to be used in many situations. For example, the Terraview application [15] uses it to allow that the user combines two or more information layers. Since the polygon overlay (TeOverlay) is a lower level operation, it is implemented in Terralib kernel. On the other hand, the TeGeoOpOverlayIntersection operator is implemented in the functions module. More precisely, the Terralib does not provide a general method for overlaying two polygons. In fact, it provides a method to determine the union, the intersection or the difference between two polygons and this operation is implemented based on the algorithm proposed by Margalit and Knott [6].

A More Efficient Method for Map Overlay in Terralib 39 2 The original overlay algorithm in Terralib The original overlay algorithm included in Terralib, named TeOverlay operator, computes the overlay of two sets of polygons. This operator is used as the main component of a higher level operator called TeGeoOpOverlayIntersection. It is used to overlay two information layers and it deals not only with the geometries but also with the layers attributes. This operator is general enough to be used in many situations.

Usually, the specifications demands oppose the commercial off-the-shelf technological restrictions like weight limitation, batteries autonomy and processing capacity. For example, the current military batteries can provide energy for displays, radios, electronic sensors and other equipment for a continued 12 hours mission [11]. Fast Action Troops, such as a Parachuting Brigade or an Air Transportable Brigade, need electric energy for at least 72 continuous hours [6]. According to Future Force Warrior [7,8], a United States Army research project, a soldier equipped with wireless communication helmet, night vision camera, PDA (Personal Digital Assistant) and GPS (Global Positioning System) would need to carry 15 kilograms extra combat equipment just for the batteries.

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Advances in Geoinformatics: VIII Brazilian Symposium on Geoinformatics, GEOINFO 2006, Campos do Jordão (SP), Brazil, November 19-22, 2006 by Clodoveu A.D. Jr. Davis, Antonio M.V.M. Monteiro


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