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Study of Road Extraction Based on a Snake Model

Author Affiliations

  • 1Department of Mathematics, Science and Research Branch, Islamic Azad University, Tehran, IRAN
  • 2Department of Geometric Engineering, Collage of Engineering, University Of Tehran, Tehran, IRAN

Res. J. Recent Sci., Volume 5, Issue (1), Pages 1-8, January,2 (2016)

Abstract

The extraction of linear features like roadsides from satellite images is an important task in engineering sciences. In this paper, we aims to find the best curves which represent the roadsides visible in satellite images. An improved hybrid mathematical model based on a snake model is proposed to represents the linear features. Snake is a parametric curve which is permitted to deform from some arbitrary initial location toward the desired final location by reducing an energy function based on the internal and external energy. The model first uses the ant colony algorithm based on a proposed heuristic information parameter to find the photometric constraints in the snake model and then a cubic spline is used to interpolate “smooth curves” to the points derived from the snake model. In comparison of our model with other snake algorithms based on edge extraction, the model showed good results with improvement of about 10 percent. This success is due to the use of linear features knowledge (here roadsides) in the model.

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