The goal of the study is to perform comparative analysis of image processing methods, enabled by means of IDRISI GIS software. The purpose has two aims. First, a spatial analysis of land cover types in the coastal landscapes of western Estonia, Pärnu area, at two various temporal dates. Second, an overview of the technical methods of IDRISI GIS enabling to evaluate image processing. The main research method consists in classification of satellite images for resulting geoecological landscapes mapping. The ISOCLUST classification enabled to create multispatiotemporal thematic maps of Pärnu area. The research method is based on the spatio-temporal analysis of the geospatial data, performed by means of GIS tools and remote sensing data.