In the Province of La Rioja, located at Northern Argentina, with extension of approximately 89,000 km², ESTEIO performed Digital Image Treatment services to obtain Image Charts in 1:50,000 scale from SPOT and LANDSAT scenes.
Services were started in 1997, when Aerial Photogrammetric Coverages in 1:5,000 scale were performed in urban locations and in 1:20,000 scale in suburban and rural locations. With the result of these coverages and subsequent photogrammetric and aerial triangulation support services, Planialtimetric Maps were obtained in 1:5,000 and 1:1,000.
As a supplement to these activities, an Urban/Rural Cadastre was performed in urban and suburban locations, totaling approximately 83,000 urban real estate units and approximately 5,000 suburban real estate units.
Cadastre services were supported by the Cartographic Base and the Land certificate, cadastral division and nomenclature provided by the Province.
For rural real estates, which are approximately 1,500 in total, a Geographic Information System was created making the 1:50,000 Image Chart compatible with graphic data obtained from rasterization and vectorization of Property Maps (HRGs − Hojas de Registro Gráfico − Graphic Record Sheets) provided by the Province.
Numerous benefits to be obtained from the services include, mainly, the significant increase in the Province tax collection.
Main activities and products obtained from the Remote Sensing service are described below: