Detection of roads in aerial images by using edge information

In this manuscript, a system which automatically detects roads in the aerial image is proposed. The proposed method detects parallel lines in the image and calculates their centers as road centers. By examining color, width, and size-to-length ratio of detected road centers, the proposed method corrects some mislabeled objects. Besides that, the proposed method further extends road centers to make possible links between them so that broken roads can be reconnected. Experimental results show that the proposed method can detect most of the roads in the aerial image.