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Metadados | Descrição | Idioma |
---|---|---|
Autor(es): dc.contributor | Universidade Estadual Paulista (Unesp) | - |
Autor(es): dc.creator | Dal Poz, A. P. [UNESP] | - |
Autor(es): dc.creator | Silva, J. F. C. [UNESP] | - |
Autor(es): dc.creator | Gallis, R. A. B. [UNESP] | - |
Autor(es): dc.creator | ISPRS | - |
Data de aceite: dc.date.accessioned | 2022-02-22T00:08:25Z | - |
Data de disponibilização: dc.date.available | 2022-02-22T00:08:25Z | - |
Data de envio: dc.date.issued | 2020-12-09 | - |
Data de envio: dc.date.issued | 2020-12-09 | - |
Data de envio: dc.date.issued | 2010-01-01 | - |
Fonte completa do material: dc.identifier | http://hdl.handle.net/11449/196082 | - |
Fonte: dc.identifier.uri | http://educapes.capes.gov.br/handle/11449/196082 | - |
Descrição: dc.description | Road 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.description | Sao Paulo State Univ, Dept Cartog, Presidente Prudente, SP, Brazil | - |
Descrição: dc.description | Sao Paulo State Univ, Dept Cartog, Presidente Prudente, SP, Brazil | - |
Formato: dc.format | 4 | - |
Idioma: dc.language | en | - |
Publicador: dc.publisher | Copernicus Gesellschaft Mbh | - |
Relação: dc.relation | 2010 Canadian Geomatics Conference And Symposium Of Commission I, Isprs Convergence In Geomatics - Shaping Canada's Competitive Landscape | - |
???dc.source???: dc.source | Web of Science | - |
Palavras-chave: dc.subject | Dynamic Programming | - |
Palavras-chave: dc.subject | Road Model | - |
Palavras-chave: dc.subject | Feature Extraction | - |
Palavras-chave: dc.subject | Road Extraction | - |
Palavras-chave: dc.subject | Aerial Images | - |
Título: dc.title | 3D ROAD EXTRACTION USING A STEREO PAIR OF AERIAL IMAGES | - |
Aparece nas coleções: | Repositório Institucional - Unesp |
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