METHODS FOR DIGITALIZING INFORMATION FROM ANALOGIC SUPPORT AND CREATING GIS DATABASES PUBLISHEDAlexandra ROSCA, Ionela JUCA, Ovidiu TIMBOTA, Vladimir BELIN, Radu Bertici, Mihai Valentin HERBEI None firstname.lastname@example.org
GIS is an acronym derived from Geographic Information System. A geographic information system (GIS) is a computerized system for capturing, storing, verifying, and displaying data related to positions on the Earth's surface. GIS can display several different types of data on a map, such as streets, buildings, and vegetation. This allows people to see, analyze and understand patterns and relationships more easily. There are two types of information used in a GIS: one graphical (and which can be raster or vector) that indicates the spatial distribution of the studied elements and another in the form of a database to store the attributes associated with these elements. Georeferencing is the process by which a scanned image (map) is aligned to a well-defined coordinate system. From a mathematical point of view, the coordinate system of the scanned map will be translated and / or rotated relative to the coordinate system in which the georeferencing process will be performed. Vector representation (digitization) of a map can seem like a very easy task for an uninitiated person. If the data is to be created in a very precisely defined structure and at the same time very correct from a geometric point of view, the problem is complicated. The result instead will be able to represent a very correct data structure that will be able to become a very solid base for all the types of analyzes that are wanted to be realized in the study area. In this paper was made the georeferencing of a map at a scale of 1: 25.000 with the code L-34-78-B-d based on the Transdat program of ANCPI Romania and ArcGIS v. 10.5. The projection system used was the National Stereographic System 1970. After georeferencing the map, a spatial database was created that includes elements such as point, line and polygon.
gedatabase, GIS, georeferencing, maps, scale, transformation