A GIS Based Tool for Change Detection of Large Scale Landuse Map

This paper deals with the technique to detect automatically the changes of land use pattern over a particular period of time with visual effect. Two land use maps (obtain from satellite picture) of the same location with some period interval have been taken as inputs. This tool calculates the RGB values, latitude and longitude of each pixel of the map. The pixel based changes of the land use classes are calculated in terms of changes of RGB values between landuse/landcover images. The technique generates output in such a way that it provides the changes location wise i.e. if mouse pointer is placed on a particular location of any input image, the information of latitude, longitude and the type of change of that location will be produced. Along with the textual information this tool visualizes the change with the use of graphics. Different symbols are used for different features of the landuse/landcover map. For a particular change from one session to other the corresponding symbols will blink to indicate the change.