Extração automatica de segmentos lineares de rodovias em imagens de resoluções variadas

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dc.contributor.authorIshibashi, Regina
dc.contributor.authordal Poz, Aluir Porfírio [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-29T08:47:56Z
dc.date.available2022-04-29T08:47:56Z
dc.date.issued2009-10-21
dc.description.abstractIn this paper a methodology for automatic extraction of road segments from images with different resolutions (low, middle and high resolution) is presented. It is based on a generalized concept of lines in digital images, by which lines can be described by the centerlines of two parallel edges. In the specific case of low resolution images, where roads are manifested as entities of 1 or 2 pixels wide, the proposed methodology combines an automatic image enhancement operation with the following strategies: automatic selection of the hysteresis thresholds and the Gaussian scale factor; line length thresholding; and polygonization. In medium and high resolution images roads manifest as narrow and elongated ribbons and, consequently, the extraction goal becomes the road centerlines. In this case, it is not necessary to apply the previous enhancement step used to enhance roads in low resolution images. The results obtained in the experimental evaluation satisfied all criteria established for the efficient extraction of road segments from different resolution images, providing satisfactory results in a completely automatic way.en
dc.description.affiliationDepartamento de Cartografia
dc.description.affiliationFCT/UNESP, Rua Roberto Simonsen, 305, 19060-900 - Presidente Prudente, SP
dc.description.affiliationUnespFCT/UNESP, Rua Roberto Simonsen, 305, 19060-900 - Presidente Prudente, SP
dc.identifier.citationBoletim de Ciencias Geodesicas, v. 15, n. 3, 2009.
dc.identifier.issn1413-4853
dc.identifier.scopus2-s2.0-70350003877
dc.identifier.urihttp://hdl.handle.net/11449/231891
dc.language.isopor
dc.relation.ispartofBoletim de Ciencias Geodesicas
dc.sourceScopus
dc.subjectAutomation
dc.subjectFeature Extraction
dc.subjectLine Features
dc.subjectParallel Edges
dc.subjectPhotogrammetry
dc.subjectRoad Features
dc.titleExtração automatica de segmentos lineares de rodovias em imagens de resoluções variadaspt
dc.title.alternativeAutomatic road segment extraction from images with different resolutionsen
dc.typeArtigo

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Artigos - Cartografia - FCT