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DeepRoadMapper: Extracting Road Topology From Aerial Images

Creating road maps is essential to the success of many applications such as autonomous driving and city planning. Most approaches in industry focus on leveraging expensive sensors mounted on top of a fleet of cars. This results in very accurate estimates when using techniques that involve a user in the loop. However, these solutions are very expensive and have small coverage. In contrast, in this paper we propose an approach that directly estimates road topology from aerial images. This provides us with an affordable solution which has large coverage. Towards this goal, we take advantage of the latest developments in deep learning to have an initial segmentation of the aerial images. We then propose an algorithm that reasons about missing connections in the extracted road topology as a shortest path problem which can be solved efficiently. We demonstrate the effectiveness of our approach in the challenging TorontoCity dataset and show very significant improvements over the state-of-the-art.

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