In order to obtain, through remote sensing, meaningful information for agriculture, on the raster image of the zone to be analysed it has to be overlapped its digital model. The digital model represents the agricultural plot borders as a network of polygons. Each plot image has to be isolated with a view at being processed according to the direct terrain measures and extracting reliable information. The paper describes a remote seasing image processing application, that creates a database of extracted plot images and related information. Specially developed Cut-up algorithms are highlighted.