Detection and extraction of roads from satellite images based on Laplacian of Gaussian operator

The extraction of road networks from satellite images has fundamental importance in GIS applications. In this paper, an automatic approach for road extraction is proposed to extract the road components from satellite images using Laplacian of Gaussian operator. The image is first pre-processed to identify the color space components and then smoothened using Laplacian of Gaussian. Then morphological method is used to remove the unwanted objects in the image. The result of proposed method improves efficiency and accuracy for extraction of roads.