GIS
2006
ACM
14 years 8 months ago
2006
ACM
We present a novel method for the automatic generalization of land cover maps. A land cover map is composed of areas that collectively form a tessellation of the plane and each ar...
GIS
2006
ACM
14 years 8 months ago
2006
ACM
Remotely sensed data, in particular satellite imagery, play many important roles in environmental applications and models. In particular applications that study (rapid) changes in...
GIS
2006
ACM
14 years 8 months ago
2006
ACM
Moving point object data can be analyzed through the discovery of patterns. We consider the computational efficiency of computing two of the most basic spatio-temporal patterns in...
GIS
2006
ACM
14 years 8 months ago
2006
ACM
Creating complex spatio?temporal simulation models is a hot issue in the area of spatio?temporal databases [7]. While existing Moving Object Simulators (MOSs) address different ph...
GIS
2006
ACM
14 years 8 months ago
2006
ACM
We give two efficient on-line algorithms to simplify weighted graphs by eliminating degree-two vertices. Our algorithms are on-line -- they react to updates on the data, keeping t...
GIS
2006
ACM
14 years 8 months ago
2006
ACM
This paper presents a query optimizer module based on cost estimation that chooses the best filtering step algorithm to perform a specific spatial join operation. A set of express...
GIS
2006
ACM
14 years 8 months ago
2006
ACM
An iconic image database is a collection of symbolic images where each image is a collection of labeled point features called icons. A method is presented to support fast position...
GIS
2006
ACM
14 years 8 months ago
2006
ACM
If you were told that some object A was perfectly (or somewhat, or not at all) in some direction (e.g., west, above-right) of some reference object B, where in space would you loo...
GIS
2006
ACM
14 years 8 months ago
2006
ACM
A cartogram is a thematic map that visualizes statistical data about a set of regions like countries, states or provinces. The size of a region in a cartogram corresponds to a par...
GIS
2006
ACM
14 years 8 months ago
2006
ACM
In the real world, lots of objects with changing position can be found. Some of them repeat the same movement several times, called periodic movements. Examples include airplanes,...