3D Road extraction using a stereo pair of aerial images

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorDal Poz, A. P.-
Autor(es): dc.creatorSilva, J. F.C.-
Autor(es): dc.creatorGallis, R. A.B.-
Data de aceite: dc.date.accessioned2025-08-21T22:44:31Z-
Data de disponibilização: dc.date.available2025-08-21T22:44:31Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2010-01-01-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/227937-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/227937-
Descrição: dc.descriptionRoad extraction from aerial and satellite imagery is of fundamental importance in the context of spatial data capturing and updating for GIS (Geographic Information System) applications. This article proposes a semiautomatic methodology for 3D road extraction from digital images. The dynamic programming (DP) algorithm is used to carry out the optimisation process in the object-space, instead of doing it in the image-space such as the DP traditional methodologies. This means that road centrelines are directly traced in the object-space, implying that a mathematical relationship is necessary to connect road points in object- and image-space. This allows the integration of radiometric information from images into the associate energy function. Although the methodology can operate in different modes (mono-plotting or stereo-plotting), and with several image types, including multisensor images, this paper presents details of our stereo-based approach involving a stereo pair of aerial images. In order to initialise the extraction procedure, a few seed points are necessary to be supplied in the object-space to sparsely and coarsely describe the roads. We visually identify these points on the stereo images and project them onto the object-space. Each road is extracted separately by an iterative scheme based on the DP optimisation algorithm. Each iteration cycle is carried out by means of a polyline densification followed by a DP optimisation. The polyline densification is carried out by linearly interpolating middle points between every adjacent vertices of the current polyline. Preliminary results have shown that the proposed methodology works properly.-
Descrição: dc.descriptionDept. of Cartography, São Paulo State University, R. Roberto Simonsen, 305-
Descrição: dc.descriptionDept. of Cartography, São Paulo State University, R. Roberto Simonsen, 305-
Idioma: dc.languageen-
Relação: dc.relationInternational Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives-
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Palavras-chave: dc.subjectAerial Images-
Palavras-chave: dc.subjectDynamic Programming-
Palavras-chave: dc.subjectFeature Extraction-
Palavras-chave: dc.subjectRoad Extraction-
Palavras-chave: dc.subjectRoad Model-
Título: dc.title3D Road extraction using a stereo pair of aerial images-
Tipo de arquivo: dc.typeaula digital-
Aparece nas coleções:Repositório Institucional - Unesp

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