Aplicacao DA Cartografia Digital NA Atualizacao Tematica de Cartas de Media E Pequena Escala Utilizando Dados Orbitais (Application of Digital Cartography Updating Middle and Small Scale Thematic Maps Using Orbital Data)

摘要

This research includes a methodology for generating polygonal maps from Landsat data using computer graphics techniques. The polygonal maps represent different classes which can be used to update thematic maps. For this purpose digital data processing procedures are applied with remote sensing data (images). Also considered is the transformation of digital data format from raster to vector approach. This permits the use of vectorial working displays and plotters. The proposed methodology provides a data file which can be used for the realization of any type of thematic map, middle and small scale, with Landsat data as the source. This methodology considers the basic cartographic precision rules.