Updating Spatial Data Infrastructure Using Road Construction Completion Reports

Road Data Updating Using Tools of Matching and Map Generalization

It is one of the important ways for GIS data updating based on map generalization. This paper analyzes the main steps for road data updating based on map generalization. As the core of this updating process, matching method considering the levels analyses and selective omission based on mesh density are developed. The approach for road data updating based on these two tools is proposed, which i...

Spatial Data Infrastructure

In the analogue era, concern for spatial data and its distribution were tasks for mapping organisations earning a reputation for producing quality products based on their spatial characteristics, including their visualisation in printed map form to be used for many different types of problems. In contrast, from the second half of the twentieth century onwards, with the developments in computer ...

Some Key Techniques on Updating Spatial Data Infrastructure by Satellite Remote Sensing Imagery

In general only a small part of spatial data in SDI change because of different factors, so rapid and effective updating methods are very vital. With the improvement of spatial resolution of satellite remote sensing (RS) imagery, it is possible to update spatial data infrastructure efficiently by satellite RS images. But the RS data volume is vast, so high processing capacity is required. It is...

Un Wfp Spatial Data Infrastructure

UN World Food programme (WFP) is implementing its own Spatial Data Infrastructure (SDI), in the framework and following the guidelines developed by United Nations Geographic Information Working Group (UNGIWG) with the UNSDI initiative. This paper will present an updated situation report of WFP SDI implementation, project realized with the technical support of ITHACA association. Geodatabase con...

Semantic enrichment of datasets to improve integration in Spatial Data Infrastructure: Case study in Road Networks