Properties Based Simplification of 2D Urban Area Map Object

For a long time, Geo-spatial information was printed on paper maps whose contents were produced once for specific purposes and scales. These maps are characterized by their portability, good graphic quality, high image resolution and good placement of their symbols and labels. These maps have been generated manually by cartographers whose work was hard and fastidious. Today, Computers are in use to generate the map as per requirement called the cartographic generalization. The purpose of cartographic generalization is to represent a particular situation adapted to the needs of its users, with adequate legibility of the real situation and its perceptional congruity with the representation. Interesting are those situations which, to some degree, vary from the real situation in nature. In this paper, a simple approach is presented for the simplification of contour, roads and building ground plans that are represented as 2D line, square and polygon segments. As it is important to preserve the overall characteristics of the buildings; the lines are geometrically simplified with regard to geometric relations. It also holds true for contour and road data. In this paper, an appropriate transformation and visualization of contour and building data is presented.