Geo-database production of digital land use map using remote sensing and GIS techniques

Abstract

With the advent of new technologies, cartographic process, digital map generalization and procedures are being developed to help the production of a digital map. Also, the requirements of different map users for the integration of raster data, like satellite images, in Geographic Information Systems (GIS) have become widely used. The resolution and characteristics of satellite images are useful to visual interpretation and feature analysis. The digital map is a symbolic computer representation of the earth’s surface linked to coordinate system, this system allows the users in controlling on the scale when printing maps, which are produced from spatial data sources represented by: scanning the topographic map and processing by many programs like AutoCAD, Google Earth and GPS data. Also, the satellite image can be processed by ERDAS imagine software. The numbering process for maps and aerial images comes within the data collection, input, and processing phase in GIS project. These numbering, and processing operations are not straightforward, but require the processing, adjustment or correction of maps and aerial coordinates. The implementation of a physical data model results in the creation of a database. Depending on its intended purposes, a database may be of different sizes and varying complexity. It may be created and managed manually or by computer, which is called DBMS. Functionally, a “DBMS” is a collection of software which support the process, defining, constructing and manipulating the database for various applications. All features are related to database contained their metadata and spatial data. The databases help greatly to accelerate accessing the data. Instead of waste the time and effort in searching, these data are collecting, storing and analyzing to use it for future studies. The databases facilitated the process of modifying the data and contributed significantly to the necessary updating process, in addition to facilitating the processes of humping or adding. However, databases are used to answer any question or query at any time especially that related to the data stored within these rules. Finally, databases also assist to form and collect huge amount of data hierarchically for facilely organization and recovery. It will be the basis for the future projects of the study area.