A File Based GIS anchored Information Retrieval Scheme (FBGISIRS) through Vectorization of Raster map

Abstract

This paper presents a technique to vectorize raster maps/images using classical files system. The technique calculates coordinates of necessary object constructing points from the raster map and stored same into the files. Based on needs of users, mouse clicking/moving tools can be used along with the assignments of different colours to various objects. Heterogeneous data can be associated to different objects. A mapping technique has been generated to retrieve the attributes from the files for visual display/interpretation. Provision has also been made to edit digitized objects for correctness or future upgradation. During editing new objects may be inserted or deleted and colour of an object may be reassigned along with alteration of Associated data.

Keywords: Raster map, vector map, digitization, GIS, information retrieval, file based vectorization.