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

Detalhes bibliográficos
Autor(a) principal: Santos, Afonso de Paula dos
Data de Publicação: 2020
Outros Autores: Medeiros, Nilcilene das Graças, Dal Poz, Aluir Porfírio, Santos, Gérson Rodrigues dos, Rodrigues, Dalto Domingos, Emiliano, Paulo César
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/48619
Resumo: This 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.
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spelling Methodology for the extraction of homologous points from a DEM/DSM to evaluate the relative positional accuracyPositional accuracyHomologous point extractionSpatial data qualityPrecisão posicionalExtração de ponto homólogoQualidade de dados espaciaisThis 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.Universidade Federal do Paraná2021-12-03T19:14:53Z2021-12-03T19:14:53Z2020info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfSANTOS, 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 .http://repositorio.ufla.br/jspui/handle/1/48619Boletim de Ciências Geodésicasreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessSantos, Afonso de Paula dosMedeiros, Nilcilene das GraçasDal Poz, Aluir PorfírioSantos, Gérson Rodrigues dosRodrigues, Dalto DomingosEmiliano, Paulo Césareng2021-12-03T19:14:53Zoai:localhost:1/48619Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2021-12-03T19:14:53Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Methodology for the extraction of homologous points from a DEM/DSM to evaluate the relative positional accuracy
title Methodology for the extraction of homologous points from a DEM/DSM to evaluate the relative positional accuracy
spellingShingle Methodology for the extraction of homologous points from a DEM/DSM to evaluate the relative positional accuracy
Santos, Afonso de Paula dos
Positional accuracy
Homologous point extraction
Spatial data quality
Precisão posicional
Extração de ponto homólogo
Qualidade de dados espaciais
title_short Methodology for the extraction of homologous points from a DEM/DSM to evaluate the relative positional accuracy
title_full Methodology for the extraction of homologous points from a DEM/DSM to evaluate the relative positional accuracy
title_fullStr Methodology for the extraction of homologous points from a DEM/DSM to evaluate the relative positional accuracy
title_full_unstemmed Methodology for the extraction of homologous points from a DEM/DSM to evaluate the relative positional accuracy
title_sort Methodology for the extraction of homologous points from a DEM/DSM to evaluate the relative positional accuracy
author Santos, Afonso de Paula dos
author_facet Santos, Afonso de Paula dos
Medeiros, Nilcilene das Graças
Dal Poz, Aluir Porfírio
Santos, Gérson Rodrigues dos
Rodrigues, Dalto Domingos
Emiliano, Paulo César
author_role author
author2 Medeiros, Nilcilene das Graças
Dal Poz, Aluir Porfírio
Santos, Gérson Rodrigues dos
Rodrigues, Dalto Domingos
Emiliano, Paulo César
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Santos, Afonso de Paula dos
Medeiros, Nilcilene das Graças
Dal Poz, Aluir Porfírio
Santos, Gérson Rodrigues dos
Rodrigues, Dalto Domingos
Emiliano, Paulo César
dc.subject.por.fl_str_mv Positional accuracy
Homologous point extraction
Spatial data quality
Precisão posicional
Extração de ponto homólogo
Qualidade de dados espaciais
topic Positional accuracy
Homologous point extraction
Spatial data quality
Precisão posicional
Extração de ponto homólogo
Qualidade de dados espaciais
description This 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.
publishDate 2020
dc.date.none.fl_str_mv 2020
2021-12-03T19:14:53Z
2021-12-03T19:14:53Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv SANTOS, 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 .
http://repositorio.ufla.br/jspui/handle/1/48619
identifier_str_mv SANTOS, 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 .
url http://repositorio.ufla.br/jspui/handle/1/48619
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal do Paraná
publisher.none.fl_str_mv Universidade Federal do Paraná
dc.source.none.fl_str_mv Boletim de Ciências Geodésicas
reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv nivaldo@ufla.br || repositorio.biblioteca@ufla.br
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