Voronoi Region-Based Spatiotemporal GIS Databases
نویسندگان
چکیده
The use of Voronoi diagrams in GIS-oriented spatiotemporal databases is considered. The Voronoi algorithms generate appropriate meshes for data interpolation. We illustrate the data representation in this database generated from a point-based spatiotemporal relation in the National Agricultural Statistics Service (NASS) database.
منابع مشابه
The Relationship among GIS-Oriented Spatiotemporal Databases
We overview three major types of GIS-oriented spatiotemporal databases: (1) point-based, (2) region-based, and (3) constraint-based. We analyze the relationship among these spatiotemporal databases and show how they can be translated into each other. We illustrate the translations with an example from National Agricultural Statistics Service (NASS) databases. Finally, we also discuss the advant...
متن کاملVisualizing changes in a dynamic Voronoi data structure via time travel
In recent years there has been rapidly growing interest by the GIS community in new visualization methods for cartographic data. The visualization of map changes is important for several reasons: spatio-temporal analysis, process modelling, and animated maps. It is now widely recognized that current GIS software has no ability to maintain incremental change of spatiotemporal data, and therefore...
متن کاملHybVOR: A Voronoi-Based 3D GIS Approach for Camera Surveillance Network Placement
As a consequence of increasing safety concerns, camera surveillance has been widely adopted as a way to monitor public spaces. One of the major challenges of camera surveillance is to design an optimal method for camera network placement in order to ensure the greater possible coverage. In addition, this method must consider the landscape of the monitored environment to take into account the ex...
متن کاملWorking with Spatio-temporal Data Type
Several aspects of spatiotemporal databases have been explored in past decades, ranging from basic data structure to query processing and indexing. But today, operational temporal GIS does not exist. The key impediments have been the complexity of integrating space and time and the lack of standards. OpenGIS standards for simple feature access (spatial type) do exist, but unlike the spatial typ...
متن کاملImproving Spatiotemporal Change Detection: A High Level Fusion Approach for Discovering Uncertain Knowledge from Satellite Image Databases
This paper investigates the problem of tracking spatiotemporal changes of a satellite image through the use of Knowledge Discovery in Database (KDD). The purpose of this study is to help a given user effectively discover interesting knowledge and then build prediction and decision models. Unfortunately, the KDD process for spatiotemporal data is always marked by several types of imperfections. ...
متن کامل