Rectification of Satellite Images by Using Wavelet Transform

In the normal cases satellite images are not identical to the topographical map and the reason behind that is , with it's spherical nature that will make a removal to the satellite image captured by the satellite .This may bring some differences in the projection between the image and the map , so these projections and coordinations must be corrected .There are two types of correction measures , first between (map- to- image), second between an (image to- image). The research depends on studying the second correction relying on the 2D Discreat wavelet transform technology, this technology proved a high performance and quality in most digital application fields and in the applications of different remote sensing in that it has a high quality in the multi-detailed analysis which is used to treat images . The study applied the wavelet transform technology on a satellite image for Singar mountain region located west of Mosul city that captured by (TM) exactly in the fifth band, to treat the satellite image correction according to the topographical map coordinates for the same region. After making statistical process on the chosen ground control points (GCPs) in each (the image and the map) and accounting the estimated value of (MSE) for points according to the threshold value. These results of the research gained by designing a program which reads and processes the stated image by using matlab 7.0 and using digital image processing measures ( image processing tool box ) which is contained with the system .