O uso da fotogrametria com VANT na regularização fundiária urbana: o caso de Salgueiro – PE

Abstract

The accelerated growth of cities, added to the socio-economic changes taking place in the country, has consolidated the problem of urban land regularization in Brazil, which has encouraged governments to make efforts to monitor and characterize the urban space, given that this is a fundamental step towards reverse the irregularity. In this sense, the research proposes the application of drone photogrammetry linked to geoprocessing to promote land regularization of urban properties. The intention of the approach was to provide the municipal public administration with information on areas of interest in a precise, broad and facilitated way by the use of Remotely-Piloted Aircrafts (RPAs). For this purpose, the mapping of the Divino Espírito Santo neighborhood, in Salgueiro/PE, was carried out, obtaining the topographic survey of the area and the digital orthomosaic, which allowed to perform spatial analyzes by contrasting the survey data with those contained in the real estate records of the City Council. The existence of 338 properties in need of regularization was identified in the neighborhood, 107 of which are located on unpaved roads and, among them, 14 are already advancing the Permanent Preservation Area. In addition to the orthomosaic, Digital Terrain Models (DTM) and Surface Models (DSM) were obtained; the contour lines of the area; and the draining water courses – elements of great use in the management of urban projects and the success of regularization programs. The positional accuracy of the generated products was measured at 2.40 cm in planimetry and 2.78 cm in altimetry, placing the survey in Class A of the Accuracy Standard for Digital Cartographic Products. The GSD (Ground Sample Distance) of the digital orthomosaic was measured at 2.97 cm, a value that attested to a spatial resolution 10 times higher than that of a satellite image of the same interest area.