A fast and efficient algorithm of automatic extraction of roads from low resolution SAR images is described here.First

a road feature detector is applied to the images to obtain the edges of roads.Then a series of templates is used for labeling the edge pixels and linking the short lines.Finally by the dynamic programming technique

the gaps between the curves of candidate roads are connected.Low-resolution SAR images of RadarSat are used to illustrate our method

and the performance is satisfactory.