Abstract
In this article, a scheme for road extraction in rural areas is proposed based on a search of the road centrelines. For this purpose, the road centreline is modelled as being a chain composed of short line segments. Only small angles are allowed between adjacent segments. In order to find the next element, the Radon transform is applied. Experiments using this approach are described and the results are compared to vectors obtained by visual analysis of the image on the screen. The accuracy of the semi-automated method is evaluated considering the completeness, correctness and root mean square of extracted centrelines.
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