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This paper presents a methodology for extracting road seeds (segments) from digital aerial images, these images often have variations, which involves complex analysis and characterizes a challenging problem in this area. This work consists in implementing techniques for detecting possible road seed. This paper presents a methodology in eliminating invalid points of the roads using the application of Modified Canny Algorithm. In the segmentation of valid points for seed construction was applied the Douglas-Peucker algorithm. In the road extraction, problems were found in relation to valid and invalid seed and in images that have rural roads. Experiments were performed with aerial images of roads to prove the proposed methodology. [ABSTRACT FROM AUTHOR]