Comparison of Satellite Images

Abstract

Abstract — This paper deals with the research in the comparison of satellite images. Our world is developing day by day, every thing in this world changing continuously. If we observe a specific area or region of our world, then we can easily find the change on that area. Karachi is the fast growing and developing, by image processing, we are observing the change in population, built up areas and vegetation. We find these changes in Karachi by images of lansat 7 satellite, we have the data of landsat 7 imageries of 1990 and 2000. We are comparing this data after image processing. For processing the image we have the ERDAS IMAGINE 9.1 software and we are using supervise classification technique basically. We can forecast future trends of the city expansion in terms of population, built up areas and vegetation