文章基本信息

标题：EXTRAÇÃO SEMI-AUTOMÁTICA DE RODOVIA BASEADA EM UM PAR ESTÉREO DE IMAGENS AÉREAS E EM OTIMIZAÇÃO POR PROGRAMAÇÃO DINÂMICA NO ESPAÇO-OBJETO
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作者：ALUIR PORFÍRIO DAL POZ ; RODRIGO DE ARAÚJO GALLIS ; JOÃO FERNANDO CUSTÓDIO DA SILVA 等
期刊名称：Boletim de Ciências Geodésicas
印刷版ISSN：1982-2170
出版年度：2010
卷号：16
期号：2
语种：Portuguese
出版社：Universidade Federal do Paraná-UFPR
摘要：This article proposes a method for 3D road extraction from a stereopair of aerial images. The dynamic programming (DP) algorithm is used to carry out the optimization process in the object-space, instead of usually doing it in the image- space such as the DP traditional methodologies. This means that road centerlines 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 mathematical road model. As the approach depends on an initial approximation of each road, it is necessary a few seed points to coarsely describe the road. Usually, the proposed method allows good results to be obtained, but large anomalies along the road can disturb its performance. Therefore, the method can be used for practical application, although it is expected some kind of local manual edition of the extracted road centerline.
其他摘要：This article proposes a method for 3D road extraction from a stereopair of aerial images. The dynamic programming (DP) algorithm is used to carry out the optimization process in the object-space, instead of usually doing it in the image-space such as the DP traditional methodologies. This means that road centerlines 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 mathematical road model. As the approach depends on an initial approximation of each road, it is necessary a few seed points to coarsely describe the road. Usually, the proposed method allows good results to be obtained, but large anomalies along the road can disturb its performance. Therefore, the method can be used for practical application, although it is expected some kind of local manual edition of the extracted road centerline.
关键词：Programação dinâmica;modelo de rodovia;extração de feição; extração de rodovia;imagens aéreas.