GRAPHIC USER INTERFACE TO PREPROCESS LANDSAT TM, ETM+ AND OLI IMAGES FOR HYDROLOGICAL APPLICATIONS

摘要

This work presents a graphic user interface (GUI), developed in MATLAB, which comprises all the preprocessing steps required to correct a Landsat TM, ETM+ and OLI. The only inputs required by the GUI are the metadata file of each Landsat image together with the digital elevation model (DEM) of the study area. The users can select among different preprocessing steps depending on their needs: (1) radiometric calibration, (2) atmospheric correction, (3) saturation problem and (4) topographic correction. The users can also choose the format of the output images (ascii ArcGIS, ascii ENVI and GEOTIFF) based on their final applications. This GUI allows faster results than other Landsat image preprocessing applications, due to the analysis of particular selected areas and the inclusion of a simple but accurate atmospheric correction.