Remote Sensing Urban Analysis

Satellite remote sensing is the process of collecting information about the Earth’s surface from the space through the measure of electromagnetic radiation. Nowadays, remote sensing is a mature technology used to extract, analyze and detect changes of geographic and thematic information over large areas, inacces-sible sites or where only limited knowledge is available. In this chapter we describe how satellite’s data collected over Multan (Pakistan) have been used for mapping and monitoring the dynamics of the urban area. A multi-scale approach allowed to evaluate the urban growth of the Municipality area occurred in the last 2 dec-ades with medium-resolution Landsat-5/TM time series. Urban green plots and in-frastructures (buildings and roads) have been mapped at the local scale of the his-toric Walled City with the state of the art GeoEye-1 and WorldView-2 very high-resolution multispectral imagery.