Aluir Porfírio Dal Poz,  Peggy Agouris. 

This paper presents a semi-automatic road extraction approach from aerial and satellite images for GIS (Geographic Information System) road network updating and capture. Basically, a generic road model is formulated using six basic road properties, which is solved sequentially by a dynamic programming algorithm. A few seed points describing coarsely the road need to be provided by the operator. The mathematical fundamentals of the methods and experimental results are presented and discussed in this paper.

http://www.tecgraf.puc-rio.br/geoinfo2000/anais/005.pdf

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