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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Object-Space Road Extraction in Rural Areas Using Stereoscopic Aerial Images

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Author(s):
Dal Poz, Aluir P. [1] ; Gallis, Rodrigo A. B. [1] ; da Silva, Joao F. C. [1] ; Martins, Erico F. O. [2]
Total Authors: 4
Affiliation:
[1] Sao Paulo State Univ, Dept Cartog, BR-19060900 Presidente Prudente - Brazil
[2] Mato Grosso State Univ, Dept Math, BR-78550000 Sinop - Brazil
Total Affiliations: 2
Document type: Journal article
Source: IEEE Geoscience and Remote Sensing Letters; v. 9, n. 4, p. 654-658, JUL 2012.
Web of Science Citations: 19
Abstract

This letter proposes a semiautomatic method for 3-D road extraction in rural areas using stereoscopic aerial images. A strategy based on the dynamic programming algorithm provides a solution to the road extraction problem in the object space. The direct tracing of road centerlines in the object space necessitates mathematical relationships connecting road points in the stereoscopic image spaces and in the object space, enabling integration of radiometric information from the stereoscopic images into the associated energy function. The extraction process begins by first measuring a few seed points in one image of the stereoscopic pair and then transforming these into the object-space reference system. Experimental results show that the proposed method was efficient and usually provided accurate road centerlines. (AU)