The collected images are pre-processed by radiometric or geometric corrections. Radiometric corrections include correcting the data for sensor irregularities and unwanted sensor or atmospheric noise, and converting the data so they accurately represent the reflected or emitted radiation measured by the sensor. To segregate the study area from the images, geo-referencing of the satellite images have been performed. They are transformed to the Bangladesh Transverse Mercator (BTM) map projection system with datum World Geographic System (WGS) 1984 as same as the RCC shape file. Then images are clipped by Raster Processing tool under Data Management tool of ArcToolbox in ArcGIS 10.