Methodology for the extraction of homologous points from a DEM/DSM to evaluate the relative positional accuracy

dc.creatorSantos, Afonso de Paula dos
dc.creatorMedeiros, Nilcilene das Graças
dc.creatorDal Poz, Aluir Porfírio
dc.creatorSantos, Gérson Rodrigues dos
dc.creatorRodrigues, Dalto Domingos
dc.creatorEmiliano, Paulo César
dc.date2021-12-03T19:14:53Z
dc.date2021-12-03T19:14:53Z
dc.date2020
dc.date.accessioned2023-09-28T19:58:51Z
dc.date.available2023-09-28T19:58:51Z
dc.identifierSANTOS, A. de P. dos et al. Methodology for the extraction of homologous points from a DEM/DSM to evaluate the relative positional accuracy. Boletim de Ciências Geodésicas, Curitiba, v. 26, n. 2, e2020007, 2020. DOI: 10.1590/s1982-21702020000200007 .
dc.identifierhttp://repositorio.ufla.br/jspui/handle/1/48619
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9041586
dc.descriptionThis work presents a new methodology for extracting 3D homologous points from a DEM/DSM for relative evaluation of positional accuracies, from terrain features such as ridgelines and hydrography. Firstly, it extracts 3D intersection points between the linear features and then it performs a selection of these homologous points. A discussion regarding the spatial resolution effect of the DEM/DSM on the proposed methodology is carried out. As case study, the planimetric and altimetric positional accuracies evaluation of SRTM (X-band) and Aster GDEM (version 2) DSMs was conducted using, as reference, a DSM obtained via photogrammetry. The SRTM and Aster GDEM (version 2) DSMs showed similar classifications, that is, Class A for the altimetry and Class B for the planimetry at the 1:100,000 scale, according to the Brazilian technical standard of positional accuracy.
dc.formatapplication/pdf
dc.languageen_US
dc.publisherUniversidade Federal do Paraná
dc.rightsAttribution 4.0 International
dc.rightsacesso aberto
dc.rightshttp://creativecommons.org/licenses/by/4.0/
dc.sourceBoletim de Ciências Geodésicas
dc.subjectPositional accuracy
dc.subjectHomologous point extraction
dc.subjectSpatial data quality
dc.subjectPrecisão posicional
dc.subjectExtração de ponto homólogo
dc.subjectQualidade de dados espaciais
dc.titleMethodology for the extraction of homologous points from a DEM/DSM to evaluate the relative positional accuracy
dc.typeArtigo


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